CN109587457A

CN109587457A - Optical projection system and its automatic setting method

Info

Publication number: CN109587457A
Application number: CN201710910304.5A
Authority: CN
Inventors: 林奇葳; 彭健钧; 刘咏乔
Original assignee: Coretronic Corp
Current assignee: Coretronic Corp
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2019-04-05
Also published as: US10893246B2; TW201916677A; TWI639340B; US20190104290A1

Abstract

The present invention provides a kind of including processing unit and the optical projection system of an at least projector.The projector couples the processing unit.The projector includes projecting cell and image acquisition unit.Projecting cell is to project on image frame to perspective plane, wherein the image frame includes grid array.The image acquisition unit to capture the image frame on the perspective plane according to multiple setup parameters respectively, to obtain the multiple pick-up images for corresponding to the multiple setup parameter.The processing unit selects to meet one of the multiple pick-up image of preset image condition it is expected pick-up image, and sets the image acquisition unit according to desired setup parameter.In addition, a kind of automatic setting method is also suggested.Optical projection system of the invention manually sets program without many and diverse.

Description

Optical projection system and its automatic setting method

Technical field

The present invention relates to a kind of shadow casting techniques, and in particular to a kind of optical projection system and its automatic setting method.

Background technique

In general, multiple projectors are integrated into optical projection system for projecting the splicing image frame of large area.Namely It says, these projectors can project multiple portions image frame respectively, and whole in coming on perspective plane by these partial image pictures Close the image frame of one complete large area of display.However, in the prior art, general optical projection system needs to set up a large amount of Device and need for multiple projectors carry out it is many and diverse manually set, to manually adjust the setup parameter of each projector. Cause to set up optical projection system due to needing to take a significant amount of time, and causes the increase of the erection cost of optical projection system.Therefore, such as What make optical projection system have the advantages that easily set up, and enable optical projection system come in a manner of setting automatically adjust automatically this The related setting parameter of a little projectors, so that these projectors can be accurately next in projecting these partial image pictures on perspective plane It is integrated into the image frame of complete large area, is one of current important topic.

" background technique " paragraph is used only to help to understand the content of present invention, therefore disclosed by " background technique " paragraph Content may include some prior arts without constituting road known to those skilled in the art.Disclosed by " background technique " paragraph Content, the content or the one or more embodiment problems to be solved of the present invention are not represented, before the present patent application It has been readily known to those persons skilled in the art or has recognized.

Summary of the invention

The present invention provides multiple projectors of a kind of optical projection system and its automatic setting method automatically setting optical projection system Setup parameter out of the ordinary.Other objects and advantages of the present invention can from disclosed herein technical characteristic in obtain further Understanding.

It is up to one of above-mentioned or part or all of purpose or other purposes, one embodiment of the invention proposes a kind of be applicable in In the automatic setting method of optical projection system.Optical projection system includes processing unit and an at least projector, and projector includes Projecting cell and image acquisition unit, automatic setting method include: to project on image frame to perspective plane by projecting cell, Wherein image frame includes grid array；Capture according to multiple setup parameters the shadow on perspective plane respectively by image acquisition unit As picture, to obtain the multiple pick-up images for corresponding to multiple setup parameters；Multiple pick-up images are analyzed, it is multiple to judge respectively Whether pick-up image meets preset image condition；When one of multiple pick-up images meet preset image condition, It selects to meet one of multiple pick-up images of preset image condition it is expected pick-up image；And setting corresponds to the phase Hope that one of multiple setup parameters of pick-up image are desired setup parameter, and according to desired setup parameter setting of image Acquisition unit.It is to propose a kind of packet up to one of above-mentioned or part or all of purpose or other purposes, one embodiment of the invention Include the optical projection system of processing unit and an at least projector.The projector couples the processing unit.Projector's packet Include projecting cell and image acquisition unit.The projecting cell is to project on image frame to perspective plane, wherein the shadow As picture includes grid array.The image acquisition unit to capture on the perspective plane respectively according to multiple setup parameters The image frame, to obtain the multiple pick-up images for corresponding to the multiple setup parameter.Described in the processing unit analysis Multiple pick-up images, to judge whether the multiple pick-up image meets preset image condition respectively.When the multiple acquisition When one of image meets the preset image condition, the processing unit selection meets the preset image condition One of the multiple pick-up image be desired pick-up image.The processing unit setting corresponds to the expectation and captures One of the multiple setup parameter of image is desired setup parameter, and the processing unit is set according to the expectation joins Number sets the image acquisition unit.

Multiple projections of optical projection system can be judged automatically based on above-mentioned, of the invention optical projection system and its automatic setting method The other expectation pick-up image of machine, to set the other setup parameter of these projectors automatically.Therefore, when user sets up projection system When system, what these projectors of optical projection system need not be many and diverse manually sets program.

To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and make in detail in conjunction with attached drawing Carefully it is described as follows.

Detailed description of the invention

Fig. 1 is painted the schematic diagram of the optical projection system of one embodiment of the invention；

Fig. 2 is painted the flow chart of the automatic setting method of one embodiment of the invention；

Fig. 3 A is painted the side schematic view of the projector of one embodiment of the invention；

Fig. 3 B is painted the schematic diagram of the image frame of one embodiment of the invention；

Fig. 3 C is painted the schematic diagram of the pick-up image of one embodiment of the invention；

Fig. 4 A~Fig. 4 D is painted the schematic diagram of the pick-up image of another embodiment of the present invention；

Fig. 5 is painted the flow chart of the automatic setting method of another embodiment of the present invention；

Fig. 6 A is painted the schematic diagram of the first projection mode of the optical projection system of one embodiment of the invention；

Fig. 6 B is painted the schematic diagram of the second projection mode of the optical projection system of one embodiment of the invention；

Fig. 6 C is painted the schematic diagram of the third projection mode of the optical projection system of one embodiment of the invention；

Fig. 6 D is painted the schematic diagram of the 4th projection mode of the optical projection system of one embodiment of the invention；

Fig. 7 is painted the flow chart of the automatic setting method of another embodiment of the present invention；

Fig. 8 A is painted the schematic diagram of the first reference image of one embodiment of the invention；

Fig. 8 B is painted the schematic diagram of the second reference image of one embodiment of the invention；

Fig. 9 is painted the flow chart of the automatic setting method of another embodiment of the present invention；

The third that Figure 10 A is painted one embodiment of the invention refers to the schematic diagram of image；

Figure 10 B is painted the schematic diagram of the 4th reference image of one embodiment of the invention；

Figure 11 is painted the schematic diagram of the Liang Ge projector of one embodiment of the invention；

Figure 12 is painted the schematic diagram of the coordinate integration of Figure 11 embodiment；

Figure 13 A is painted the overlapping schematic diagram in two image projecting regions of Figure 11 embodiment；And

Figure 13 B is painted the schematic diagram of the complete image picture area of Figure 11 embodiment.

Specific embodiment

For the present invention aforementioned and other technology contents, feature and effect, below in conjunction with the preferred embodiment of attached drawing Detailed description in, can clearly present.The direction term being previously mentioned in following embodiment, such as: it is upper and lower, left and right, preceding Or it is rear etc., it is only the direction with reference to attached drawing.Therefore, the direction term used is intended to be illustrative and not intended to limit the present invention.And And " coupling " word being previously mentioned in following embodiment can refer to any direct or indirect connection means.In addition, " signal " word It can refer to an at least electric current, voltage, charge, temperature, data, electromagnetic wave or any other one or more signal.

Fig. 1 is painted the schematic diagram of the optical projection system of one embodiment of the invention.With reference to Fig. 1, optical projection system 100 includes processing dress 110 and multiple projector 120_1,120_2~120_N is set, wherein N is the positive integer greater than zero.Processing unit 110 includes control Device 111 and image processor 112 processed.Projector 120_1,120_2~120_N respectively include projecting cell 121_1,121_2 ~121_N and image acquisition unit 122_1,122_2~122_N.In the present embodiment, projecting cell 121_1,121_2~ 121_N can further comprise light source module (such as light emitting device with discharge bulb, light emitting diode or laser diode), Ray machine (has optical modulator, e.g. reflective or transmission-type spatial light modulator is with reflective spatial light modulator Example, reflective liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) or digital micro-mirror component (Digital Micro-mirror Device, DMD) etc.；The spatial light modulator of transmission-type, such as light transmitting liquid crystal panel (Transparent Liquid Crystal Panel).In addition, the difference according to input control signal mode, optical modulator is, for example, that light addressing is empty Between optical modulator (Optically addressed spatial light modulator, OASLM) either electrical addressing sky Between optical modulator (Electrically addressed spatial light modulator, EASLM), projection lens set (including multiple eyeglasses) and image output unit (such as output signal discharge coupling (I/O port or Interface)), by bluetooth (Bluetooth), Wireless Fidelity (Wi-Fi), purple honeybee (Zigbee) or it is other wirelessly Presentation content signal (video signal) or control signal (control signal) are transmitted, optical fiber can also be used or other have Line (wire) coffret is transmitted) etc..Image acquisition unit 122_1,122_2~122_N can be video camera (Camera). In the present embodiment, optical projection system 100 projects multiple image frames by projector 120_1,120_2~120_N, and by A complete image picture is presented in the integration of these image frames.Optical projection system 100 by image acquisition unit 122_1,122_2~ 122_N is in capturing multiple pick-up images in other image acquisition area on perspective plane (such as Fig. 3 A).Therefore, processing unit 110 These pick-up images for being captured of analysis image acquisition unit 122_1,122_2~122_N, and with corresponding projector 120_ 1, multiple image frames that 120_2~120_N is projected are compared, to adjust projector 120_1,120_2~120_N phase Close projection setting.In addition, the range that is captured of image acquisition unit 122_1,122_2~122_N be greater than projector 120_1, The range that 120_2~120_N is projected.

In the present embodiment, controller 111, which can be for example, is configured at desktop computer (Desktop Computer), individual Computer (Personal Computer, PC), portable terminal product (Portable Terminal Product), a number Word assistant (Personal Digital Assistor, PDA) and tablet computer (Tablet PC) etc..In addition, controller 111 may include have image data handle and calculation function central processing unit (Central Processing Unit, CPU) or at the microprocessor (microprocessor) of other programmable general services or specific use, digital signal Manage device (Digital Signal Processor, DSP), image processor (Image Processing Unit, IPU), figure Processor (Graphics Processing Unit, GPU), programmable controller, special application integrated circuit (Application Specific Integrated Circuits, ASIC), programmable logic device (Programmable Logic Device, PLD), the combinations of other similar processing unit or these devices.

In the present embodiment, controller 111 and image processor 112 can further comprise storage device respectively, wherein Storage device can be used for storing image processing program described in various embodiments of the present invention, image data, data operation program or seat Mark transfer equation etc..In the present embodiment, controller 111 can be used for executing the analysis of the pick-up image of various embodiments of the present invention Operation, the integrated operation of image frame and various image processing operations.In the present embodiment, image processor 112 is, for example, Visual fusion device (Blending box, such as Optoma, GB-200 Multifunctional imaging splice fusion treatment device).In addition, image Processor 112 may be disposed at the outside of controller 111 or be integrated into same device with controller 111, but the present invention and be not added With limitation.

In the present embodiment, image processor 112 couples controller 111.Controller 111 is used for image output frame numbers According to, control signal and image frame integrate setting value to image processor 112, so that image processor 112 is drawn according to image Setting value is integrated in face, and image frame data provided by controller 111 are allocated, and image processor 112 will be allocated Image frame data and dependent projections setting value are transferred to projector 120_1,120_2~120_N respectively, so that projector 120_1,120_2~120_N project the image frame of part relative to allocated image frame data respectively, can be presented one Complete image frame.Wherein, image frame data make a reservation for the presentation content archives or image file to be projected, and control Signal processed is then the running for controlling projector and image acquisition unit.

In another embodiment, controller 111 couples image processor 112, and controller 111 is used for image output frame numbers According to image processor 112, image frame data are passed to projector 120_1,120_2~120_N points by image processor 112 It Tou She not be relative to the image frame of image frame data.In addition, controller 111 be respectively coupled to projector 120_1,120_2~ 120_N by other transfer modes (such as RJ-45) provide control signal to image processor 112 and projector 120_1, 120_2~120_N, to control image processor 112 and projector 120_1,120_2~120_N operation.

In other embodiments, controller 111 couples image processor 112, and controller 111 is used for image output frame numbers According to control signal to image processor 112, later image processor 112 by image frame data pass to projector 120_1, 120_2~120_N projects the image frame relative to image frame data respectively.

Specifically, optical projection system 100 can advance with controller before optical projection system 100 executes normal projection's work 111 set projector 120_1,120_2~120_N and automatic setting of image picture integrating setting value automatically.When projection is When system 100 executes normal projections' work, image processor 112 can integrate setting value according to the image frame set automatically to be come pair The image frame data that controller 111 provides are handled, to drive projector 120_1,120_2~120_N projection image to draw Face.In the present embodiment, projector 120_1,120_2~120_N can project the identical bits on multiple image frames to perspective plane It sets or different location.

Fig. 2 is painted the flow chart of the automatic setting method of one embodiment of the invention.With reference to Fig. 1 and Fig. 2, Fig. 2's is automatic Setting method is suitable for the optical projection system 100 of Fig. 1.In step S210, projecting cell 121_1,121_2~121_N projection are more On a image frame to perspective plane, wherein these image frames respectively include grid array.In step S220, image capture list First 122_1,122_2~122_N capture these image frames on perspective plane according to multiple setup parameters respectively, to obtain correspondence In multiple pick-up images of the multiple setup parameter.In step S230, processing unit 110 can analyze these pick-up images, To judge whether these pick-up images meet image condition respectively.In step S240, when one of these pick-up images When meeting preset image condition, the selection of processing unit 110 meets the multiple pick-up image of the image condition wherein One of be desired pick-up image.In step s 250, multiple settings that the setting of processing unit 110 corresponds to desired pick-up image are joined One of number is desired setup parameter, and according to desired setup parameter setting of image acquisition unit.In manufacture, every Image acquisition unit 122_1,122_2~122_N pick-up image function can't be consistent, therefore, by the above method, processing Device 110 can automatic individual settings image acquisition unit 122_1,122_2~122_N so that image acquisition unit 122_1, 122_2~122_N can capture the good multiple acquisition pictures of image quality respectively, be conducive to processing unit 110 can effectively with It accurately analyzes these and captures picture.

That is, in the present embodiment, projector 120_1,120_2~120_N of optical projection system 100 can be preparatory respectively Image acquisition unit 122_1,122_2~122_N setup parameter are executed, so that image acquisition unit 122_1,122_2~ 122_N can obtain the good multiple pick-up images of the quality of image.Therefore, projector 120_1,120_2~120_N can be distinctly automatic The adjustment operation for executing image frame, so that processing unit 110 effectively can analyze or compare projector 120_1,120_2~120_ These pick-up images and corresponding multiple image frames that N is provided, and effectively avoid the case where judging by accident.Following with figure It is specifically described in the example schematic of 3A to Fig. 4 D.

Fig. 3 A is painted the side schematic view of the projector of one embodiment of the invention.With reference to Fig. 3 A, in the present embodiment, projection Machine 320 can be installed on fixed object B, and projector 320 be arranged above the S1 of perspective plane so that projector 320 on toward Lower projection image light source PI to perspective plane S1, wherein perspective plane S1 may extend away is formed in second direction P2 and third direction P3 Plane on.In the present embodiment, fixed object B, which may extend away, is formed by plane in first direction P1 and third direction P3 On, and fixed object B can be for example ceiling or branch supporting piece etc., and perspective plane S1 can be cloth curtain or wall etc..At other In embodiment, B object also may extend away to be formed by plane in second direction P2 and third direction P3, and the present invention is not subject to Limitation.It is mutually orthogonal to one another between first direction P1, second direction P2 and third direction P3.It is worth noting that, of the invention The set-up mode of projector described in each embodiment is not limited to shown in Fig. 3 A.In one embodiment, projector 320 can also be set It sets below the S1 of perspective plane, so that projector 320 projects image light source PI to perspective plane S1 from lower to upper.

Fig. 3 B is painted the schematic diagram of the image frame of one embodiment of the invention.Fig. 3 C is painted the acquisition of one embodiment of the invention The schematic diagram of image.Referring to figs. 2 to Fig. 3 C, in the present embodiment, processing unit 310 couples projector 320.Firstly, projector 320 projecting cell projects on image frame 301 to perspective plane S1 as shown in Figure 3 C, and wherein image frame 301 includes lattice point Array 302.In the present embodiment, grid array 302 is formed by multiple lattice point sequentials, and these lattice points are same size And it is spaced each other same distance.Then, the image acquisition unit of projector 320 captures perspective plane according to multiple setup parameters respectively Image frame on S1, to obtain the multiple pick-up images for corresponding to these setup parameters, wherein these pick-up images can be such as It is pick-up image 303 shown in Fig. 3 C.It is noted that the projecting cell projection image frame 301 of projector 320 is by facing Angle viewing is as shown in Figure 3B.The image acquisition unit of projector 320 is to be captured by the position of projector 320 to pick-up image 303, therefore image frame 301 ' in pick-up image 303 and grid array 302 ' they are the picture for tilting an angle.In this reality It applies in example, the size range of pick-up image 303 is greater than the size range of image frame 301.

For example, Fig. 4 A~Fig. 4 D is painted the schematic diagram of the pick-up image of another embodiment of the present invention.Referring to figs. 2 to figure The image acquisition unit of 4D, projector 320 can be for example Fig. 4 A to figure according to these pick-up images that these setup parameters obtain Pick-up image 303A, 303B, 303C, 303D shown in 4D.It is worth noting that, the image acquisition unit of projector 320 can be according to According to setup parameter, such as different exposure value (Exposure value) or shutter acquisition speed (Shutter capture Speed pick-up image 303A, 303B, 303C, 303D are sequentially obtained).In the present embodiment, processing unit 310 analyzes these Pick-up image, to judge whether these pick-up images meet preset image condition respectively.

In the present embodiment, preset image condition can be for example calculating or analysis pick-up image 303A, 303B, 303C, The other multiple average gray of 303D, other multiple lattice point quantity or other light belt area.Processing unit 310 can be by By judge these average gray whether be higher than threshold value, can by judging whether these lattice point quantity are equal to preset quantity, or Can by judging whether other light belt area is equal to preset area, come determine these pick-up images 303A, 303B, 303C, The picture readability of 303D, wherein light belt area is whether to be higher than area shared by threshold value with gray values all in pick-up image Equal to preset area.In other examples, preset image condition is also possible to preset image condition.Therefore, it handles Device 310 can be selected according to above-mentioned preset image condition one of pick-up image 303A, 303B, 303C, 303D for It is expected that pick-up image, and the setting of processing unit 310 corresponds to the setup parameter of desired pick-up image (for example, exposure value or fast Door acquisition speed etc. is set) it is expected setup parameter, and according to desired setup parameter setting of image acquisition unit.

Specifically, pick-up image 303C and pick-up image 303D cause part lattice point to be connected in due to exposing Together, cause to be difficult to recognize.Although pick-up image 303A and pick-up image 303B lattice point quantity are identical, pick-up image The average gray of each lattice point of 303B is higher than threshold value, and the average gray of each lattice point of pick-up image 303A is lower than threshold Value.Therefore, processing unit 310 judges the image quality of pick-up image 303B better than pick-up image 303A.In this instance, processing dress It sets 310 and selects pick-up image 303B it is expected pick-up image, and the setup parameter setting corresponding to pick-up image 303B is scheduled to last Hope setup parameter.Accordingly, the processing unit 310 of the present embodiment can adjust automatically projector 320 image acquisition unit.However, In one embodiment, if whole pick-up image 303A, 303B, 303C, 303D does not all meet preset image condition, processing Device 310 can also project on prompt image to perspective plane S1 by the projecting cell of projector 320, to remind user must be with hand The mode of dynamic adjustment becomes come the setup parameter or adjustment environment for adjusting projector 320 because the environment becomes because can be environment Light source or other may influence projection factor, such as adjustment environment light source brightness size etc., the present invention do not limited System.

Fig. 5 is painted the flow chart of the automatic setting method of another embodiment of the present invention.With reference to Fig. 1 and Fig. 5, Fig. 5 from Dynamic setting method is suitable for the optical projection system 100 of Fig. 1.In step S510, processing unit 110 is each according to the multiple projector The setting of other firmware distinctly judges that the multiple projector is lower throwing mode or upslide mode, that is, will be above and below projector The reverse disposing way either general disposing way of projector, it is to be understood that the multiple projector is setting side on the projection surface Or below perspective plane.In step S520, processing unit 110 is by projector 120_1,120_2 that side on the projection surface is arranged The part of~120_N sequentially projects projection mode and judges image, and wherein projection mode judges that image includes multiple lattice points.In step In rapid S530, when one of these projectors 120_1,120_2~120_N of side projects projective module on the projection surface for setting When formula judges image, other each projector 120_1,120_2~120_N image acquisition unit 122_1,122_2~ 122_N, other image acquisition area obtains other pick-up image on the projection surface.In step S540, processing unit 110 It is other that others each projector 120_1,120_2~120_N below side on the projection surface or perspective plane is arranged in analysis The pick-up image that image acquisition area is captured, to judge projector 120_1,120_2~120_N projection mode.Therefore, locate Reason device 110 can judge automatically whether image acquisition unit 122_1,122_2~122_N are overlapped the same image frame of projection or divide It opens and projects different image frames, set in these projectors 120_1,120_2~120_N projection image frame automatically Hold.

In addition, in the present embodiment, processing unit 110 can also judge projector 120_1,120_2~120_N setting Sequentially.In the present embodiment, processing unit 110 can analyze each throwings of others being arranged below side on the projection surface or perspective plane Projection mode judgement in the pick-up image that the other image acquisition area shadow machine 120_1,120_2~120_N is captured At least one of position of these lattice points of image, to judge projector 120_1,120_2~120_N setting sequence. That is, user need not according to each when user sets up projector 120_1,120_2 of optical projection system 100~120_N The shadow that manual projection machine 120_1,120_2~120_N are projected respectively is carried out in projector 120_1,120_2~120_N setting position As the content of picture.Optical projection system 100 of the invention can judge automatically each projector 120_1,120_2~120_N setting Position and projection mode.

It is carried out specifically following with the automatic setting method of example schematic combination Fig. 5 of Fig. 6 A to Fig. 6 D It is bright.

Fig. 6 A is painted the schematic diagram of the first projection mode of the optical projection system of one embodiment of the invention.With reference to Fig. 5 and figure 6A, in the present embodiment, processing unit 610 couple projector 620_1~620_6.Projector 620_1~620_6 is sequentially being thrown Corresponding image acquisition area 601_1~601_6 on the S1 of shadow face projects other image frame.In the present embodiment, Projector 620_1~620_6 is arranged above the S1 of perspective plane, but the present invention is not limited thereto.In one embodiment, projector 620_1~620_6 may also be arranged below the S1 of perspective plane.

In the present embodiment, firstly, processing unit 610 executes step S510, so that projector 620_1~620_6 can be according to The position set according to preset firmware out of the ordinary to judge projector 620_1~620_6 setting is above the S1 of perspective plane or to throw Below the S1 of shadow face, wherein above-mentioned firmware setting can be by user via the whole function of view control (the On Screen of projector Display, OSD) or remote controler etc. it is default or determined by projector 620_1~620_6 is automatic respectively.Then, processing unit 610 Step S520 is executed, is thrown so that projector 620_1~620_6 is sequentially projected in corresponding image acquisition area 601_1~601_6 Shadow mode decision image.Also, processing unit 610 executes step S530, when one of projector 620_1~620_6 is thrown When penetrating projection mode and judging image, other image capture of other each projector 620_1~620_6 on the S1 of perspective plane Region 601_1~601_6 obtains other pick-up image.Finally, processing unit 610 executes step S540, processing unit 610 is divided Analysis is arranged in each projector 620_1~620_6 of others above the S1 of perspective plane and is captured in other image acquisition area Other pick-up image, to judge the projection mode of projector 620_1~620_6.

For example, when projector 620_3 judges image in corresponding image acquisition area 601_3 projection projection mode When, other projector 620_1,620_2,620_4,620_5,620_6 will be to respective image acquisition area 601_1,601_ 2,601_4,601_5,601_6 obtain pick-up image simultaneously.It is noted that in the present embodiment, projection mode judges image Image frame on image acquisition area 601_3 that can be as shown in Figure 6A, wherein projection mode judge image in left side block with And right side block can be respectively provided with multiple lattice point GP.Therefore, processing unit 610 can analyze other projector 620_1,620_2, 620_4,620_5,620_6 are captured in corresponding image acquisition area 601_1,601_2,601_4,601_5,601_6 Pick-up image.In the present embodiment, it is captured by other projector 620_1,620_2,620_4,620_5,620_6 It is all not in whole lattice point GP that projection mode judges image in pick-up image, therefore processing unit 610 can determine whether to project There is not the case where Chong Die projection between machine 620_3 and projector 620_1,620_2,620_4,620_5,620_6.With such It pushes away, processing unit 610 can determine whether the projection mode between projector 620_1~620_6.

Fig. 6 B is painted the schematic diagram of the second projection mode of the optical projection system of one embodiment of the invention.With reference to Fig. 5 and figure 6B, in the present embodiment, processing unit 710 couple projector 720_1~720_6.Projector 720_1~720_6 is sequentially being thrown Corresponding image acquisition area 701_1~701_6 on the S1 of shadow face projects image frame.In the present embodiment, projector 720_1~720_3 is arranged above the S1 of perspective plane, but the present invention is not limited thereto.In one embodiment, projector 720_1~ 720_6 may also be arranged below the S1 of perspective plane.

In the present embodiment, firstly, processing unit 710 executes step S510, so that projector 720_1~720_6 can be according to Judging to project the position of 720_1~720_6 setting according to preset firmware setting out of the ordinary is above the S1 of perspective plane or to project Below the S1 of face.Then, processing unit 710 executes step S520, so that projector 720_1~720_6 is sequentially in corresponding image Acquisition area 701_1~701_6 projection projection mode judges image.Also, processing unit 710 executes step S530, works as projection When one of machine 720_1~720_6 projection projection mode judges image, other each projector 720_1~720_6 exist Other image acquisition area 701_1~701_6 on the S1 of perspective plane obtains pick-up image.Finally, processing unit 710 executes step Rapid S540, processing unit 710 analyze each projector 720_1~720_6 of others being arranged in above the S1 of perspective plane out of the ordinary The other acquisition picture that is captured of image acquisition area, to judge the projection mode of projector 720_1~720_6.

Specifically, when projector 720_3 judges image in corresponding image acquisition area 701_3 projection projection mode When, other projector 720_1,720_2,720_4,720_5,720_6 will be to respective image acquisition area 701_1,701_ 2,701_4,701_5,701_6 simultaneously or sequentially obtain pick-up image.It is noted that in the present embodiment, projection mode is sentenced Disconnected image can be as shown in Figure 6B image acquisition area 701_3 on image frame, wherein projection mode judges image in left side Block and right side block can be respectively provided with multiple lattice points.Therefore, processing unit 710 can analyze other projector 720_1, 720_2,720_4,720_5,720_6 are in corresponding image acquisition area 701_1,701_2,701_4,701_5,701_6 The pick-up image captured.In the present embodiment, it will appear projective module in the pick-up image captured by projector 720_4 Formula judges whole lattice point GP of image, therefore processing unit 710 can determine whether that projector 720_3 has Chong Die throw with projector 720_4 The case where shadow.It but is not in throw in the pick-up image captured by projector 720_1,720_2,720_5,720_6 Whole lattice point GP of shadow mode decision image, therefore processing unit 710 can determine whether projector 720_1,720_2,720_5,720_6 There is not the case where Chong Die projection with projector 720_3,720_4.And so on, processing unit 710 can determine whether projector 720_1~ Projection mode between 720_6.Subsidiary one is mentioned that, the application that Liang Tai projector repeats projection is applicable to Special Projection environment On, such as darker projection environment or the poor perspective plane of reflective degree.Liang Tai projector repeat projection same image picture in Same image projecting region can increase the brightness or clarity of image frame.

Also, in this instance, processing unit 710 can further analyze other projector 720_1,720_2,720_4, The acquisition that 720_5,720_6 are captured in corresponding image acquisition area 701_1,701_2,701_4,701_5,701_6 Image.In this instance, since projector 720_1,720_2 are projeced into image acquisition area 701_1,701_2 of lap position, because This projector 720_1,720_2 can be considered one group, and point of out-of-order.Similarly, projector 720_3,720_4 can be considered one group, And projector 720_5,720_6 can be considered one group.That is, due to the shadow of projector 720_1,720_2,720_5,720_6 As acquisition unit is in the pick-up image that corresponding image acquisition area 701_1,701_2,701_3,701_4 are captured The projection mode for being respectively provided with projector 702_3 projection judges the part lattice point GP of image, therefore processing unit 710 can determine whether this A little part lattice point GP appear in the position in the pick-up image of projector 720_1,720_2,720_5,720_6 acquisition, to sentence Whether the image frame of disconnected projector 720_1,720_2,720_5,720_6 projection is overlapped.

Fig. 6 C is painted the schematic diagram of the third projection mode of the optical projection system of one embodiment of the invention.Fig. 6 D is painted the present invention The schematic diagram of 4th projection mode of the optical projection system of one embodiment.With reference to Fig. 5, Fig. 6 C and Fig. 6 D, in the present embodiment, place It manages device 810 and couples projector 820_1~820_6.Projector 820_1~820_6 sequentially respectively corresponding on the S1 of perspective plane Image acquisition area 801_1~801_6 project image frame.In the present embodiment, projector 820_1~820_3 setting is thrown Above the S1 of shadow face, and below projector 820_4~820_6 setting perspective plane S1.

In the present embodiment, firstly, processing unit 810 executes step S510, so that projector 820_1~820_6 can be according to Judging to project the position of 820_1~820_6 setting according to preset firmware setting out of the ordinary is above the S1 of perspective plane or to project Below the S1 of face.Then, processing unit 810 executes step S520, so that projector 820_1~820_6 is sequentially in corresponding image Acquisition area 801_1~801_6 projection projection mode judges image.Also, processing unit 810 executes step S530, works as projection When one of machine 820_1~820_6 projection projection mode judges image, other each projector 820_1~820_6 exist Other image acquisition area 801_1~801_6 on the S1 of perspective plane obtains pick-up image.Finally, processing unit 810 executes step Rapid S540, processing unit 810 analyze each projector 820_1~820_6 of others being arranged in above the S1 of perspective plane out of the ordinary The acquisition picture that is captured of image acquisition area, to judge the projection mode of projector 820_1~820_6.

Specifically, when projector 820_2 judges image in corresponding image acquisition area 801_2 projection projection mode When, other projector 820_1,820_3,820_4,820_5,820_6 will be to respective image acquisition area 801_1,801_ 3,801_4,801_5,801_6 obtain pick-up image simultaneously.It is noted that in the present embodiment, projection mode judges image Image frame on image acquisition area 801_2 that can be as shown in Figure 6 C, wherein projection mode judges image in left side block, the right side Lateral areas block and downside block can be respectively provided with multiple lattice point GP, this multiple lattice point GP is arranged as L-type arrangement.Therefore, processing dress Other projector 820_1,820_3,820_4,820_5,820_6 can be analyzed in corresponding image acquisition area by setting 810 The pick-up image that 801_1,801_3,801_4,801_5,801_6 are captured.In the present embodiment, due to projector 820_1, It is not in whole lattice points that projection mode judges image in the pick-up image that 820_3,820_4,820_5,820_6 are captured GP。

Also, in this instance, processing unit 810 can further analyze other projector 820_1,820_3,820_4, The acquisition that 820_5,820_6 are captured in corresponding image acquisition area 801_1,801_3,801_4,801_5,801_6 Image.In this instance, since the image acquisition unit of projector 820_1,820_3 are in corresponding image acquisition area 801_ 1, the projection mode that projector 820_2 projection is respectively provided in the pick-up image that 801_3 is captured judges the partitive case of image Point GP, therefore processing unit 810 can determine whether that these parts lattice point GP appears in the pick-up image of projector 820_1,820_3 acquisition Right positions and leftward position in the middle, with judge projector 820_1,820_3 be located at the left side of projector 820_2 with And right side.In this instance, since the image acquisition unit of projector 820_4,820_6 are in corresponding image acquisition area The projection mode that projector 820_2 projection is respectively provided in the pick-up image that 801_4,801_6 are captured judges the portion of image Lattice point GP, therefore processing unit 810 can determine whether that these partitive case points appear in the acquisition shadow of projector 820_4,820_6 acquisition Upper side position as in, to judge that projector 820_4,820_6 are located at the downside of projector 820_2.In addition, projector Lattice point GP of the 820_5 in the pick-up image that corresponding image acquisition area 801_5, projector 820_5 are captured is than other throwings The lattice point GP that shadow machine captures is more, and the lattice point GP in the pick-up image of acquisition is located at upside, to judge projector 820_5 In the underface of projector 820_2.

With reference to Fig. 6 D, in this instance, when projector 820_5 projects projection mode in corresponding image acquisition area 801_5 When judging image, other projector 820_1,820_2,820_3,820_4,820_6 will be to respective image acquisition areas 801_1,820_2,801_3,801_4,801_6 simultaneously or sequentially obtain pick-up image.In the present embodiment, projection mode judges Image can be as shown in Figure 6 D image acquisition area 801_5 on image frame, wherein projection mode judges image in left side area Block, right side block and upside block can be respectively provided with multiple lattice point GP, this multiple lattice point GP is arranged as L-type arrangement.Due to throwing The image acquisition unit of shadow machine 820_2 has projection in the pick-up image that corresponding image acquisition area 801_2 is captured The projection mode of machine 820_5 projection judges the part lattice point GP of image, therefore processing unit 810 can determine whether these parts lattice point GP Appear in projector 820_2 acquisition pick-up image in lower position, number and position by these parts lattice point GP, To judge that projector 820_2 is located at the surface of projector 820_5.Therefore processing unit 810 can determine whether these parts lattice point GP The right positions and leftward position in the pick-up image of projector 820_4,820_6 acquisition are appeared in, to judge projector 820_4,820_6 are located at the left side and right side of projector 820_5.In this instance, due to projector 820_1,820_3 The pick-up image that image acquisition unit is captured in corresponding image acquisition area 801_1,801_3, wherein projector 820_1 has no the part lattice point GP for capturing and judging image to the projection mode that projector 820_5 is projected, but projector 820_3 The pick-up image that is captured in corresponding image acquisition area 801_3 of image acquisition unit, throwing of the fechtable to projection The part lattice point GP of shadow mode decision image, therefore processing unit 810 can determine whether that these partitive case points appear in projector 820_3 Lower position in the pick-up image of acquisition, to judge that projector 820_3 is located at the upside of projector 820_5.With this Analogize, after projector 820_1~820_6, which sequentially projects projection mode, judges image, processing unit 810 can determine whether projector Setting relationship between 820_1~820_6, to judge the setting sequence of projector 820_1~820_6.

Fig. 7 is painted the flow chart of the automatic setting method of another embodiment of the present invention.With reference to Fig. 1 and Fig. 7, Fig. 7 from Dynamic setting method is suitable for the optical projection system 100 of Fig. 1.In the present embodiment, projector 120_1 include projecting cell 121_1 with And image acquisition unit 122_1.In step S910, processing unit 110 refers to image by projecting cell 121_1 projection first To perspective plane, and first on perspective plane is captured by image acquisition unit 122_1 and refers to image, captured with obtaining first Image.In step S920, processing unit 110 projects on the second reference image to perspective plane by projecting cell 121_1, and Second on perspective plane is captured by image acquisition unit 122_1 and refers to image, to obtain the second pick-up image.In step S930 In, processing unit 110 compares the first pick-up image and the second pick-up image, is picked with obtaining in the first pick-up image and second The changing value of pixel value in image (pixel value) is taken, and changing value is greater than the position of the image block of preset value, and It is effective identification block that defining, which has the position of the image block of pixel value variation,.And so on, projector 120_2~120_N Also same operation can be performed, wherein pixel value is technical name well known to those skilled in the art, for example including gray value etc., but It is not limited.

That is, the range by the image acquisition unit 122_1 pick-up image captured is greater than projecting cell 121_1 The range of the image frame of projection, therefore the pick-up image that image acquisition unit 122_1 is captured may include image frame week The background video enclosed.In the present embodiment, processing unit 110 can judge automatically the acquisition that image acquisition unit 122_1 is captured Effective identification block in image, so as to work as the acquisition shadow that processing unit 110 is captured in analysis image acquisition unit 122_1 When picture, processing unit 110 can only handle the image of effectively identification block, and need not calculate whole pick-up images.Therefore, originally The processing unit 110 of embodiment can effectively save time and the data operation quantity of image analysing computer and operation.

It is carried out specifically following with the automatic setting method of example schematic combination Fig. 7 of Fig. 8 A to Fig. 8 B It is bright.

Fig. 8 A is painted the schematic diagram of the first reference image of one embodiment of the invention.With reference to Fig. 7, Fig. 8 A and Fig. 8 B, place It manages device 1010 and couples projector 1020.Firstly, in fig. 8 a, the projecting cell of projector 1020 is in projecting first on perspective plane With reference to image 1001A.In the present embodiment, first whole white image or all black image be can be for example with reference to image 1001A.And And in the present embodiment, the image acquisition unit of projector 1020 captures the image frame being projeced on perspective plane, with acquirement pair The first pick-up image answered.Then, in the fig. 8b, the projecting cell of projector 1020 refers to shadow in projection second on the S1 of perspective plane As 1001B.In the present embodiment, second it can be for example all black for being different from first with reference to image 1001A with reference to image 1001B Image or whole white image.Also, in the present embodiment, the image acquisition unit acquisition of projector 1020 is projeced on perspective plane Image frame, to obtain corresponding second pick-up image.

In the present embodiment, as shown in Figure 8A and 8B, due to processing unit 1010 obtain the first pick-up image with And second pick-up image, the first pick-up image include first with reference to image 1001A and background video BI and the second pick-up image Including second with reference to image 1001B and background video BI.Therefore processing unit 1010 can pick the first pick-up image and second It takes the pixel value of each pixel of image to subtract each other, subtracts each other image to obtain pixel.Also, processing unit 1010 can analyze pixel phase Subtract image, to judge that the changing value for subtracting each other the pixel value in image in pixel is higher than the block of preset value, and defines pixel The block that the changing value of value is higher than preset value is effectively to recognize block.Relatively, processing unit 1010 can analyze pixel phase Subtract image, to judge that the changing value for subtracting each other the pixel value in image in pixel is lower than the block of preset value, and defines pixel The changing value of value is non-effective identification block lower than the block of preset value.Therefore, the processing unit 1010 of the present embodiment can Judge automatically the effective identification block for the pick-up image that the image acquisition unit of projector 1020 is captured.

Fig. 9 is painted the flow chart of the automatic setting method of another embodiment of the present invention.With reference to Fig. 1 and Fig. 9, Fig. 9 from Dynamic setting method is suitable for the optical projection system 100 of Fig. 1.It is noted that the automatic setting method of Fig. 9 can hookup 7 the step of S930 and execute it, but the present invention is not limited thereto.In one embodiment, the automatic setting method of Fig. 9, which can also be, independently executes. In the present embodiment, projector 120_1 includes projecting cell 121_1 and image acquisition unit 122_1.In step S1110, Processing unit 110 is by projecting cell 121_1 projection third with reference to the position for corresponding to effectively identification block on image to perspective plane It sets.In step S1120, processing unit 110 captures the third on perspective plane by image acquisition unit 122_1 and refers to image, To obtain third pick-up image, wherein third with reference to image there are four that are arranged as quadrangle to refer to lattice point, and be located at effective It recognizes in block.In step S1130, processing unit 110 analyzes third pick-up image, to obtain in third pick-up image Four four reference coordinates with reference to lattice point.In step S1140, processing unit 110 is according to four four with reference to lattice point Reference coordinate projects on full lattice point image to perspective plane to generate full lattice point image by projecting cell 121_1, wherein entirely Lattice point image includes the grid array formed by multiple lattice points.In another embodiment, four can be full lattice point shadow with reference to lattice point A part of picture, and full lattice point image be in processing unit it is pre-set, be according to set by the resolution ratio of projector Image.In step S1150, processing unit 110 captures shadow by the 4th that image acquisition unit 122_1 captures perspective plane Picture, and the 4th pick-up image is analyzed, to obtain multiple lattice point coordinates of multiple lattice points in the 4th pick-up image.In step In rapid S1160, processing unit 110 establishes projecting cell 121_1's and image acquisition unit 122_1 according to these lattice point coordinates Coordinate transformation relation.Therefore, when processing unit 110 is when analyzing pick-up image and image frame, processing unit 110 is convertible Coordinate relationship between pick-up image and image frame.And so on, identical behaviour also can be performed in projector 120_2~120_N Make.

It is illustrated following with the automatic setting method of example schematic combination Fig. 7 of Figure 10 A to Figure 10 B.

The third that Figure 10 A is painted one embodiment of the invention refers to the schematic diagram of image.Figure 10 B is painted one embodiment of the invention The 4th with reference to image schematic diagram.With reference to Fig. 9, Figure 10 A and Figure 10 B, projector 1120 can be coupled such as above-described embodiment institute The processing unit stated.Firstly, processing unit executes step S1110 in Figure 10 A, to drive projector 1120 to project third ginseng Image 1101A is examined in the position for corresponding to effectively identification block on perspective plane.In the present embodiment, processing unit executes step S1120, to drive projector 1120 to capture the third on perspective plane with reference to image 1101A, to obtain third pick-up image 1103A, wherein third includes four reference lattice point 1102A for being arranged as quadrangle with reference to image 1101A.Therefore, third captures There is inclined third to refer to lattice point 1102A ' with reference to image 1101A ' and four in image 1103A.In the present embodiment, Processing unit executes step S1130, to analyze third pick-up image 1103A, to obtain in third pick-up image 1103A Four four reference coordinates with reference to lattice point 1102A '.Therefore, processing unit can establish four ginsengs of the third with reference to image 1101A Four coordinates with reference to lattice point 1102A ' for examining lattice point 1102A and third pick-up image 1103A are converted.

Then, in fig. 1 ob, processing unit executes step S1140, and processing unit generates full lattice point image 1101B, and It is projected on full lattice point image 1101B to perspective plane by projector 1120, wherein full lattice point image 1101B includes by multiple lattice points The grid array 1102B of formation.In the present embodiment, processing unit executes step S1150, to drive the image of projector 1120 Acquisition unit captures the 4th pick-up image 1103B on perspective plane, and analyzes the 4th pick-up image 1103B, to obtain the 4th Each lattice point coordinate of the grid array 1102B ' of full lattice point image 1101B ' in pick-up image 1103B.In this implementation In example, processing unit executes step S1160.Processing unit establishes the projecting cell of projector 1120 according to these lattice point coordinates Coordinate transformation relation between image acquisition unit.That is, the image of the projecting cell projection due to projector 1120 It is non-equal between the pick-up image that picture and image acquisition unit capture, therefore when processing unit analyzes pick-up image, processing Device can according to above-mentioned acquirement each coordinate transformation relation by each point coordinate bit in effective identification region of pick-up image Set the coordinate position be converted to corresponding to image frame.

Figure 11 is painted the schematic diagram of the Liang Ge projector of one embodiment of the invention.The coordinate that Figure 12 is painted Figure 11 embodiment is whole The schematic diagram of conjunction.It is noted that automatic setting method described in above-mentioned Fig. 9 embodiment can also be covered between more projectors Coordinate system foundation.With reference to Figure 11 and Figure 12, processing unit 1210 couples projector 1220_1,1220_2, is thrown with two For shadow machine.In Figure 11, the image projecting region 1411 of projector 1220_1 partially overlaps the image of projector 1220_2 View field 1421.There is overlapping region 1431A between image projecting region 1411 and image projecting region 1421.In Figure 12 In, the image acquisition unit of projector 1220_1 obtains pick-up image 1310~1330, and the image of projector 1220_2 is picked Unit is taken to obtain pick-up image 1340~1390.

It is described in detail with the pick-up image of Figure 12 1310~1390 below.In the present embodiment, projector 1220_1 When projection first is with reference to image, the image acquisition unit of projector 1220_1 is captured to pick-up image 1310, while projector The image acquisition unit of 1220_2 captures first projected to projector 1220_1 and forms pick-up image 1340 with reference to image, it Projector 1220_1 projection has the image frame with reference to lattice point 1321 afterwards, while the image acquisition unit of projector 1220_2 is picked It gets the image frame with reference to lattice point 1321 that has that projector 1220_1 is projected and forms pick-up image 1350, and so on, As shown in figure 12.

Processing unit 1210 analyze pick-up image 1310 in effective identification block, and processing unit 1210 analysis by Effective identification block in the pick-up image 1340 that the image acquisition unit of projector 1220_2 is captured.In the present embodiment In, there are four the image frames with reference to lattice point for projector 1220_1 projection tool, pick wherein four positions with reference to lattice point are closer Take the right side of image 1320.Projector 1220_2 does not project image frame, but the image acquisition unit of projector 1220_2 is then picked Get pick-up image 1350.Therefore, pick-up image 1320,1350 is respectively provided with each four and refers to lattice point 1321,1351.In this reality It applies in example, each four in the analysis pick-up image 1320,1350 of processing unit 1210 refer to lattice point 1321,1351, to obtain This four with reference to lattice points 1321,1351 respectively four reference coordinates in the coordinate system of projector 1220_1,1220_2 with And other four reference coordinate.In the present embodiment, projector 1220_1 projects full lattice point image, and wherein projector 1220_2 is not thrown Image frame is penetrated, but the image acquisition unit of projector 1220_2 is then captured to pick-up image 1360.Therefore, pick-up image 1330,1360 it is respectively provided with full lattice point image 1331,1361.In the present embodiment, projector 1220_1,1220_2 is analyzed respectively Each lattice point of full lattice point image 1331,1361 in pick-up image 1330,1360, with obtain full lattice point image 1331, Multiple lattice point coordinates of 1361 each lattice point and another multiple lattice point coordinates.

In the present embodiment, projector 1220_2 connects projection image frame, to execute such as above-mentioned projector 1220_1 Analyze the operation of pick-up image 1310~1330.In the present embodiment, processing unit 1210 is analyzed in pick-up image 1380 Four refer to lattice point 1381, to obtain this four four references with reference to lattice point 1381 in the coordinate system of projector 1220_2 Coordinate.Also, processing unit 1210 analyzes each lattice point of the full lattice point image 1391 in pick-up image 1390, to obtain Multiple lattice point coordinates of each lattice point of full lattice point image 1391.

That is, in the present embodiment, processing unit 1210 can utilize these lattice point coordinates of above-mentioned acquirement, Lai Jinhang Coordinates matrix operation, to obtain the projecting cell of projector 1220_1 and the coordinate transformation relation of image acquisition unit, projection Between the projecting cell of machine 1220_2 and the coordinate transformation relation of image acquisition unit and projector 1220_1,1220_2 Coordinate transformation relation.Also, in the present embodiment, processing unit 1210 can be by the image projecting region of projector 1220_1 The image projecting region 1421 of 1411 and projector 1220_2 is integrated into an identical coordinate system.However, about the present invention Coordinate transformation relation described in each embodiment can according to the technical field usual knowledge and obtain it is enough teaching, suggest with And implement explanation, therefore will not be repeated here.

It is worth noting that, in the present embodiment, processing unit 1210 can will be projected by above-mentioned each coordinate transformation relation The pick-up image that machine 1220_1,1220_2 are obtained carries out coordinate conversion, and adjusts pick-up image such as Figure 13 A, Figure 13 B, with benefit into The image analysing computer of row following embodiment.

Figure 13 A is painted the overlapping schematic diagram in two image projecting regions of Figure 11 embodiment.Figure 13 B is painted Figure 11 embodiment Complete image picture area schematic diagram.With reference to Figure 11, Figure 13 A and Figure 13 B, in the present embodiment, projector 1220_1, The image acquisition area 1410,1420 of 1220_2 partly overlaps, and image projecting region 1411,1421 has (with depicted as solid lines) Overlapping region 1411A/1421A.In figure 13a, before projector 1220_1,1220_2 are not yet integrated in the same coordinate system, Four apex coordinates of image acquisition area 1410 are respectively (X1, Y1), (X2, Y1), (X1, Y2), (X2, Y2).Image capture Four apex coordinates in region 1420 are respectively (X3, Y1), (X4, Y1), (X3, Y2), (X4, Y2).For processing unit 1210 For, the coordinate system of the image acquisition area 1410 of projector 1220_1 is different from the image acquisition area of projector 1220_2 1420。

For example, image acquisition area 1410 and image acquisition area 1420 are located at sustained height in the horizontal direction, But not limited to this.The resolution ratio of the image acquisition unit of projector 1220_1,1220_2 is 752 × 480 pixels respectively.Also To say, apex coordinate (X1, Y1), (X2, Y1), (X1, Y2), (X2, the Y2) of image acquisition area 1410 may respectively be (0,0), (752,0), (0,480), (752,480), and (X3, the Y1) of image acquisition area 1420, (X4, Y1), (X3, Y2), (X4, Y2 (0,0), (752,0), (0,480), (752,480)) also be may respectively be.In this instance, image projecting region 1411 and image View field 1412 is in the horizontal direction not at sustained height, and image projecting region 1411 and image projecting region 1412 have overlapping region 1411A/1421A.

In this instance, the size in image projecting region 1411 and image projecting region 1412 is 480 × 360.With image For the coordinate system of acquisition area 1410, the both bounded sides in image projecting region 1411 are, for example, to be located at image acquisition area The position of boundary a1=136 and boundary a2=616 in 1410 coordinate system, and image projecting region 1411 is upper and lower Two boundaries are, for example, the position for being located at boundary b1=100 and boundary b2=460 in the coordinate system of image acquisition area 1410 It sets.For the coordinate system of image acquisition area 1420, the both bounded sides in image projecting region 1421 are, for example, to be located at image The position of boundary a3=136 and boundary a4=616 in the coordinate system of acquisition area 1420, and image projecting region 1421 two boundaries up and down are, for example, the boundary b3=60 and boundary b4 being located in the coordinate system of image acquisition area 1410 =420 position.

In this instance, processing unit 1210 can determine whether image projecting region 1411 and image projecting region 1421 in level side There is image overlap area 1411A/1421A upwards, and processing unit 1210 is adjusted separately in image overlap area 1411A/ The partial image picture (the image overlap area 1411A in image projecting region 1411) projected in 1421A by projector 1220_1 Brightness value and another part image frame (image overlap area in image projecting region 1421 for being projected by projector 1220_2 Domain 1421A) brightness value.That is, processing unit 1210 can determine whether that image overlap area 1411A/1421A occupies shadow respectively As the size in view field 1411 and image projecting region 1421, and projector 1220_1,1220_2 are dimmed respectively The brightness value of image frame in image overlap area 1411A/1421A, to avoid in image overlap area 1411A/ The brightness of image frame in 1421A is excessively bright.

Also, processing unit 1210 can further judge the difference in image projecting region 1411 Yu image projecting region 1421 Other minimum horizontal distance on horizontally and vertically is (by a1 to a4) and minimum perpendicular distance (by b1 To b4).Therefore, in this instance, processing unit 1210 according to minimum horizontal distance (by a1 to a4) and minimum perpendicular distance (by B1 determines the complete image picture area 1431 such as Figure 13 B to b4).

Specifically, the coordinate system integrated operation of the executable such as above-mentioned Figure 12 of processing unit 1210, by image capture area Domain 1410 and image acquisition area 1420 are integrated into image acquisition area 1430.In this instance, image acquisition area 1430 Size be 1072 × 480, and the size of complete image picture area 1431 be 800 × 280.Image projecting region 1431 Both bounded sides be, for example, be located at boundary a1 '=136 in the coordinate system of image acquisition area 1430 and boundary a4 '= 936 position, and two boundaries up and down in image projecting region 1411 are, for example, the coordinate system for being located at image acquisition area 1410 The position of boundary b1 '=100 and boundary b4 '=380 in the middle.Also, the both bounded sides example of image overlap area 1431A The position of boundary a3 '=456 in the coordinate system of image acquisition area 1430 and boundary a2 '=616 in this way.Also It is to say, processing unit 1210 can integrate the image projecting region 1411,1421 of projector 1220_1,1220_2 respectively automatically and be Whole image frame region 1431, so that in a complete image picture can be presented on perspective plane.Also, in the present embodiment, locate Manage device 1210 can operation image overlap area 1431A in the horizontal direction image overlap ratio be 20% (i.e. (616- 456)/(936-136)).According to the ratio of image overlap area 1431A image overlap in the horizontal direction, processing unit 1210 Can adjust automatically image projecting region 1411 20% region of the right image frame brightness, and can adjust automatically image throw The brightness of the image frame in 20% region of the left side in shadow zone domain 1412, so that the complete shadow that complete image picture area 1431 is presented As picture can have uniform brightness effects.

In conclusion multiple projections of optical projection system and its automatic setting method automatically setting optical projection system of the invention The setup parameter out of the ordinary of machine, and the projection mode and setting sequence of these projectors can be judged automatically, so that optical projection system can It is easily set up according to various projection demand.Also, optical projection system and its automatic setting method of the invention can also be automatic whole Close optical projection system these projectors image frame, and can these projectors of adjust automatically image frame size range, To integrate multiple image frames of these projectors as the complete image picture with good projection quality.

The above is merely a preferred embodiment of the present invention, when that cannot be limited the scope of implementation of the present invention with this, i.e., Generally according to simple equivalent changes and modifications made by the claims in the present invention and invention description content, all still belong to the invention patent In the range of covering.In addition any embodiment of the invention or claim be not necessary to reach disclosed herein whole purposes or Advantage or feature.It is used, is not intended to limit the invention in addition, abstract part and title are intended merely to auxiliary patent document search Interest field.In addition, the terms such as " first " that refers in this specification or claim, " second " are only to name element (element) title or the different embodiments of difference or range, and not it is used to the quantitative upper limit of restriction element or lower limit.

Symbol description

100: optical projection system

110,310,610,710,810,1010,1210: processing unit

111: controller

112: image processor

120_1、120_2、120_N、320、620_1、620_2、620_3、620_4、620_5、620_6、720_1、720_ 2、720_3、720_4、720_5、720_6、820_1、820_2、820_3、820_4、820_5、820_6、1020、1120、1220_ 1,1220_2: projector

121_1,121_2,121_N: projecting cell

122_1,122_2,122_N: image acquisition unit

301,301 ': image frame

302,302 ': grid array

303、303A、303B、303C、303D、1103A、1103B、1310、1320、1340、1350、1360、1370、 1380,1390: pick-up image

601_1、601_2、601_3、601_4、601_5、601_6、701_1、701_2、701_3、701_4、701_5、 701_6,801_1,801_2,801_3,801_4,801_5,801_6,1410,1420,1430: image acquisition area

1001A, 1001B, 1101A, 1101B, 1101A ', 110B ': refer to image

1331,1361,1391: Quan Gedian image

1411,1421,1431: image projecting region

1411A, 1421A, 1431A: overlapping region

A1, a2, a3, a4, a1 ', a2 ', a3 ', a4 ', b1, b2, b3, b4, b1 ', b4 ': boundary

B: fixed object

BI: background video

S1: perspective plane

S210~S250, S510~S540, S910~S930, S1110~S1160: step

PI: image light source

P1: first direction

P2: second direction

P3: third direction

GP, 1102A, 1102A ', 1321,1351,1381: lattice point

Claims

1. a kind of automatic setting method, which is characterized in that be suitable for optical projection system, wherein the optical projection system includes processing unit And an at least projector, and the projector includes projecting cell and image acquisition unit, which comprises

It is projected on image frame to perspective plane by the projecting cell, wherein the image frame includes grid array；

The image frame on the perspective plane is captured respectively according to multiple setup parameters by the image acquisition unit, with Obtain the multiple pick-up images for corresponding to the multiple setup parameter；

The multiple pick-up image is analyzed, to judge whether the multiple pick-up image meets preset image condition respectively；

When one of the multiple pick-up image meets the preset image condition, selection meets the preset shadow One of the multiple pick-up image of slice part is desired pick-up image；And

One of the multiple setup parameter that setting corresponds to the expectation pick-up image is desired setup parameter, and The image acquisition unit is set according to the expectation setup parameter.

2. automatic setting method as described in claim 1, which is characterized in that wherein the grid array by multiple lattice points sequentially Arrangement is formed, and the multiple lattice point is same size and is spaced each other same distance.

3. automatic setting method as described in claim 1, which is characterized in that wherein the expectation setup parameter be exposure value or Shutter acquisition speed parameter.

4. automatic setting method as described in claim 1, which is characterized in that analyze the multiple pick-up image, wherein to divide Do not judge that the step of whether the multiple pick-up image meets the preset image condition includes:

The other multiple average gray of the multiple pick-up image are calculated, and judge whether the multiple average gray is high In threshold value；And

If one of the multiple average gray is higher than the threshold value, judgement corresponds to described higher than the threshold value One of the multiple pick-up image of one of multiple average gray meets the preset image condition.

5. automatic setting method as described in claim 1, which is characterized in that analyze the multiple pick-up image, wherein to divide Do not judge that the step of whether the multiple pick-up image meets the preset image condition includes:

The other multiple lattice point quantity of the multiple pick-up image are calculated, and it is pre- to judge whether the multiple lattice point quantity is equal to If quantity；And

If one of the multiple lattice point quantity is equal to the preset quantity, judgement corresponds to the preset quantity One of the multiple pick-up image of one of the multiple lattice point quantity meet the preset image item Part.

6. automatic setting method as described in claim 1, which is characterized in that analyze the multiple pick-up image, wherein to divide Do not judge that the step of whether the multiple pick-up image meets the preset image condition includes:

The other light belt area of the multiple pick-up image is calculated, and judges whether the light belt area is equal to default face Product；And

If the light belt area is equal to the preset area, judgement corresponds to the light belt area of the preset area The pick-up image meet the preset image condition.

7. automatic setting method as described in claim 1, which is characterized in that further include:

When whole the multiple pick-up images does not meet the preset image condition, mentioned by projecting cell projection Show on image to the perspective plane.

8. a kind of optical projection system characterized by comprising

Processing unit；And

An at least projector couples the processing unit, and the projector includes:

Projecting cell, to project on image frame to perspective plane, wherein the image frame includes grid array；And

Image acquisition unit, to capture the image frame on the perspective plane respectively according to multiple setup parameters, to take Multiple pick-up images corresponding to the multiple setup parameter are obtained,

Wherein the processing unit analyzes the multiple pick-up image, to judge it is pre- whether the multiple pick-up image meets respectively If image condition, when one of the multiple pick-up image meets the preset image condition, processing dress It sets and selects to meet one of the multiple pick-up image of the preset image condition it is expected pick-up image, and institute It states processing unit setting and corresponds to one of the multiple setup parameter of the expectation pick-up image it is expected to set ginseng Number, the processing unit set the image acquisition unit according to the expectation setup parameter.

9. optical projection system as claimed in claim 8, which is characterized in that wherein the grid array is by multiple lattice point sequentials It is formed, and the multiple lattice point is same size and is spaced each other same distance.

10. optical projection system as claimed in claim 8, which is characterized in that wherein the expectation setup parameter is exposure value or fast Door acquisition speed parameter.

11. optical projection system as claimed in claim 8, which is characterized in that wherein the processing unit calculates the multiple acquisition The other multiple average gray of image, and the processing unit judges whether the multiple average gray is higher than threshold value,

If wherein one of the multiple average gray is higher than the threshold value, the processing unit judgement corresponds to height Meet in one of the multiple pick-up image of one of the multiple average gray of the threshold value described Preset image condition.

12. optical projection system as claimed in claim 8, which is characterized in that wherein the processing unit calculates the multiple acquisition The other multiple lattice point quantity of image, and judge whether the multiple lattice point quantity is equal to preset quantity,

If wherein one of the multiple lattice point quantity is equal to the preset quantity, the processing unit judgement corresponds to One of the multiple pick-up image of one of the multiple lattice point quantity equal to the preset quantity meets The preset image condition.

13. optical projection system as claimed in claim 8, which is characterized in that wherein the processing unit calculates the multiple acquisition The other light belt area of image, and judge whether the light belt area is equal to preset area,

If wherein the light belt area is equal to the preset area, the processing unit judgement corresponds to the default face One of the multiple pick-up image of the long-pending light belt area meets the preset image condition.

14. optical projection system as claimed in claim 8, which is characterized in that wherein when whole the multiple pick-up images is not inconsistent When closing the preset image condition, on the projecting cell projection prompt image to the perspective plane.