CN101017316A - Correction method for deformation of multiscreen playing suitable for irregular screen - Google Patents
Correction method for deformation of multiscreen playing suitable for irregular screen Download PDFInfo
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- CN101017316A CN101017316A CN 200710037518 CN200710037518A CN101017316A CN 101017316 A CN101017316 A CN 101017316A CN 200710037518 CN200710037518 CN 200710037518 CN 200710037518 A CN200710037518 A CN 200710037518A CN 101017316 A CN101017316 A CN 101017316A
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Abstract
This invention relates to one multi-screen play deformation correction method for irregular screen, which comprises the following steps: firstly processing deformation on multi-screen picture to make the projection suitable for irregular screen; then through control end for correction of multiple screens to fulfill multi-screen picture automatic matching; finally melting the picture edge; in playing process, through control end to process simultaneous control.
Description
Technical field
The present invention relates to multi-screen demonstration and control, particularly relate to a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen.
Background technology
To be spliced in the main demonstration and control technology, be used to realize that the seamless spliced technology that the seamless fusion of image shows is one of important technology wherein.Seamless spliced technology be a kind of special, require can to realize the multi-screen image co-registration together, to such an extent as to and will splice the slit and contract to the minimum splicing of coincidence fully than higher projection display applications.In recent years, along with the development of software and hardware technology, seamless spliced technology had been widely used in fields such as display and demonstration, vision amusement, advertisement.
From the splicing effect aspect, seamless spliced technology has experienced three developing stage: hard-edge splicing, lap splice and soft limit anastomosing and splicing.The hard-edge splicing has obvious cut-off rule (being usually said physics piece), can't realize the integrated demonstration of panorama; Lap splice is that the image launched of two projectors is overlapping in the mode of stack in the mosaic, this splicing exists " bright band effect ", spliced image does not have incorporate sensation, significantly " splicing sense " arranged, though this lap splice does not have the physics splicing seams, but the optics bright band is arranged, can not reach perfectly " seamless " effect; Soft limit anastomosing and splicing is by the processing of edge integration technology, both realized the fusion fully on both sides, eliminated the mistake bright area that lap splice causes again, and soft limit anastomosing and splicing can adapt to the splicing of various curve forms such as plane, cylinder, sphere, have extensive applicability more.
At present, realize that the disposal route of soft limit anastomosing and splicing has: a kind of method is a hardware solution, the high-end projector by built-in seamless spliced technology or all can realize the seamless fusion of super large width of cloth picture by external seamless spliced processor.Though adopt the high-end projector of built-in seamless spliced technology to reach good display effect, its shortcoming is: cost is too high, the extensive application in market has been produced restriction; In addition, accurate high-end devices is accompanied by complicated operations and debug process, and debugging institute is time-consuming also longer.Adopt external seamless spliced processor to be faced with the high shortcoming of cost equally, support the shortcoming that number of channels is few simultaneously in addition.Other method is a software solution, at the outpost display environment, every frame of film film source is made deformation process, carries out picture splicing in conjunction with the mode of physics " anti-dazzling screen " and merges.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen, and this method is out of shape the multi-screen picture earlier, so that its projection can be applicable to irregular screen; By control end the multi-screen picture is proofreaied and correct then, finished the automatic splicing of multi-screen picture; At last the picture edge being carried out the edge merges; In playing process, carry out the synchronous playing control of multi-screen picture by control end to playing end, it is characterized in that this method is out of shape the multi-screen picture based on Bezier (Bezier) grid and is proofreaied and correct.
Described distortion may further comprise the steps:
A. at first construct the Bezier grid surface;
B. with every frame picture of film mode, be attached on the Bezier grid surface with texture;
C. by the critical control point of control Bezier grid surface, picture is deformed into required shape.
Described correction may further comprise the steps:
A. the user selects frame to determine that each screen-picture need be out of shape the coordinate of the target location of correction by using control end software to drag to be selected from normal moveout correction;
B. the Bezier curved surface of screen to be corrected being carried out the reference mark resets;
C. the pairing broadcast end projection of screen to be corrected uncalibrated image one (Image1);
D. according to the uncalibrated image one of projection, draw the mapping scale-up factor between the image of projected image and camera acquisition;
E. the pairing broadcast end projection of screen to be corrected uncalibrated image two (Image2);
F. by playing the uncalibrated image two of end projection, locate the coordinate of critical control point in the camera acquisition image of the Bezier curved surface of required correction;
G. obtain the difference between Bezier curved surface critical control point and the target location coordinate;
H. according to the difference of obtaining at step G, judge whether all reference mark have reached the target location, if success, execution in step J; If unsuccessful, execution in step I;
I. the coordinate at Bezier curved surface reference mark to be corrected is revised, then execution in step E;
J. judging whether that all screens have all been proofreaied and correct finishes, if success is then withdrawed from; If get nowhere, then execution in step K;
K. change screen to be corrected into next screen, then execution in step B.
Described control end comprises computing machine, video camera, image pick-up card in described video camera and the computing machine is connected, be used to gather screen picture, described broadcast end comprises the computing machine and the projector of some equal numbers, and every interior graphics acceleration card of computing machine respectively is connected with a projector; Described control end and broadcast end adopt client/server (C/S) pattern, and computer set is built up LAN.
Described irregular screen comprises arc curtain, ring curtain, ball curtain or hyperboloid curtain.
Compared with prior art, the present invention has advantage cheaply, and utilizes video camera to finish the correction of a plurality of screens automatically, has avoided complicated manually-operated, makes and safeguards that debugging work is more convenient; Family machine/server (C/S) pattern can increase the quantity of passage easily, has good extendability.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention;
Fig. 2 is the principle schematic of distortion of the present invention;
Fig. 3 is the process flow diagram of correction of the present invention;
Fig. 4 is the synoptic diagram of uncalibrated image one of the present invention (Image1);
Fig. 5 is the synoptic diagram of uncalibrated image two of the present invention (Image2);
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Shown in Fig. 1～5, the present invention is combined into a giant-screen to a plurality of the small screen that have independent projector equipment, with the multi-screen image projection to irregular screens such as arc curtain, ring curtain, ball curtain and hyperboloid curtain, and pass through software processing, the multi-screen picture is out of shape correction, realizes the automatic splicing of projected picture.The present invention by the logical PC of many Daeporis, the logical projector of many Daeporis and and a video camera form, graphics acceleration card as the PC that plays end respectively connects a projector, another PC comes to carry out synchro control to playing end by LAN as control end, and video camera is connected on the image pick-up card of control end PC and is used to gather screen picture.
The present invention realizes the distortion of picture through the following steps: the first step, at first construct the Bezier grid surface.In second step,, be attached on the Bezier grid surface every frame picture of film mode with texture.In the 3rd step, the critical control point by control Bezier grid surface is deformed into required shape with picture.According to picture deformation method of the present invention, projected picture can be applicable to irregular screens such as arc curtain, ring curtain, ball curtain and hyperboloid curtain, and whole deformation process all is real-time.Fig. 2 is the principle schematic of picture distortion.
On the basis of single picture distortion, the present invention adopts and utilizes camera review collection and analysis, finishes the distortion of a plurality of screen-pictures and proofreaies and correct, and whole process need not artificial participation, finishes automatic splicing automatically.
The idiographic flow that the distortion that Fig. 3 is is proofreaied and correct is described in detail each step among the figure;
In step 501, the user drags to be selected from by use control end software and moving the splicing selects frame to determine that each screen-picture need be out of shape the coordinate of the target location of correction.Execution in step 501 then;
In step 502, the Bezier curved surface of screen to be corrected carries out the reference mark and resets.Execution in step 503 then;
In step 503, the pairing broadcast end projection of screen to be corrected uncalibrated image Image1, Image1 is as shown in Figure 6.Execution in step 504 then;
In step 504,, calculate the mapping scale-up factor between the image of projected image and camera acquisition according to the uncalibrated image Image1 of projection.Execution in step 505 then;
In step 505, the pairing broadcast end projection of screen to be corrected uncalibrated image Image2, Image2 is as shown in Figure 7.Execution in step 506 then;
In step 506,, locate the coordinate of critical control point in the camera acquisition image of the Bezier curved surface of required correction by playing the uncalibrated image Image2 of end projection.Execution in step 507 then;
In step 507, calculate the difference d between Bezier curved surface critical control point and the target location coordinate, the coordinate of target location is obtained in step 501.Execution in step 508 then;
In step 508, according to the d value of in 507 steps, obtaining, judge whether all reference mark have reached the target location, if success, execution in step 510; If unsuccessful, execution in step 509;
In step 509, the coordinate at Bezier curved surface reference mark to be corrected is revised.Execution in step 505 then;
In step 510, judge whether that all screens have all been proofreaied and correct to finish, if success is then withdrawed from; If unsuccessful, then execution in step 511;
In step 511, change screen to be corrected into next screen.Execution in step 502 then;
Claims (5)
1. correction method for deformation of multiscreen playing that is applicable to irregular screen, this method is out of shape the multi-screen picture earlier, so that its projection can be applicable to irregular screen; By control end the multi-screen picture is proofreaied and correct then, finished the automatic splicing of multi-screen picture; At last the picture edge being carried out the edge merges; In playing process, carry out the synchronous playing control of multi-screen picture by control end to playing end, it is characterized in that this method is out of shape the multi-screen picture based on Bezier (Bezier) grid and is proofreaied and correct.
2. a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen according to claim 1 is characterized in that described distortion may further comprise the steps:
A. at first construct the Bezier grid surface;
B. with every frame picture of film mode, be attached on the Bezier grid surface with texture;
C. by the critical control point of control Bezier grid surface, picture is deformed into required shape.
3. a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen according to claim 1 and 2 is characterized in that described correction may further comprise the steps:
A. the user selects frame to determine that each screen-picture need be out of shape the coordinate of the target location of correction by using control end software to drag to be selected from normal moveout correction;
B. the Bezier curved surface of screen to be corrected being carried out the reference mark resets;
C. the pairing broadcast end projection of screen to be corrected uncalibrated image one (Imagel);
D. according to the uncalibrated image one of projection, draw the mapping scale-up factor between the image of projected image and camera acquisition;
E. the pairing broadcast end projection of screen to be corrected uncalibrated image two (Image2);
F. by playing the uncalibrated image two of end projection, locate the coordinate of critical control point in the camera acquisition image of the Bezier curved surface of required correction;
G. obtain the difference between Bezier curved surface critical control point and the target location coordinate;
H. according to the difference of obtaining at step G, judge whether all reference mark have reached the target location, if success, execution in step J; If unsuccessful, execution in step I;
I. the coordinate at Bezier curved surface reference mark to be corrected is revised, then execution in step E;
J. judging whether that all screens have all been proofreaied and correct finishes, if success is then withdrawed from; If get nowhere, then execution in step K;
K. change screen to be corrected into next screen, then execution in step B.
4. a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen according to claim 1, it is characterized in that, described control end comprises computing machine, video camera, image pick-up card in described video camera and the computing machine is connected, be used to gather screen picture, described broadcast end comprises the computing machine and the projector of some equal numbers, and every interior graphics acceleration card of computing machine respectively is connected with a projector; Described control end and broadcast end adopt client/server (C/S) pattern, and computer set is built up LAN.
5. a kind of correction method for deformation of multiscreen playing that is applicable to irregular screen according to claim 1 is characterized in that, described irregular screen comprises arc curtain, ring curtain, ball curtain or hyperboloid curtain.
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| CN 200710037518 CN101017316A (en) | 2007-02-13 | 2007-02-13 | Correction method for deformation of multiscreen playing suitable for irregular screen |
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| CN101950247A (en) * | 2010-09-17 | 2011-01-19 | 广东威创视讯科技股份有限公司 | Method for correcting deformed picture |
| CN102061427A (en) * | 2009-11-18 | 2011-05-18 | 黑龙江建龙钢铁有限公司 | Production method of HRBF500E high-performance shock-resistant reinforcing steel bar |
| CN102387330A (en) * | 2011-10-27 | 2012-03-21 | 王悦 | Imaging method on irregular surface |
| CN102654826A (en) * | 2011-05-27 | 2012-09-05 | 上海华博信息服务有限公司 | Curved surface correction information processing method and device based on laser locator |
| CN102681303A (en) * | 2011-08-15 | 2012-09-19 | 上海华博信息服务有限公司 | Method and device for processing projection calibration information on basis of information feedback |
| CN103034032A (en) * | 2012-11-30 | 2013-04-10 | 无锡羿飞科技有限公司 | Multi-projector overlying automatic calibration method based on spherical display |
| CN104599312A (en) * | 2013-10-30 | 2015-05-06 | 北京莫高丝路文化发展有限公司 | Simulation method of full-dome multi-channel projection |
| CN104836970A (en) * | 2015-03-27 | 2015-08-12 | 北京联合大学 | Multi-projector fusion method based on GPU real-time video processing, and multi-projector fusion system based on GPU real-time video processing |
| CN105323517A (en) * | 2014-07-16 | 2016-02-10 | 腾讯科技（深圳）有限公司 | Projection picture automatic calibration method and projection picture automatic calibration device |
| CN105376555A (en) * | 2015-12-11 | 2016-03-02 | 重庆环漫科技有限公司 | Stereo fusion playing method |
| CN105376540A (en) * | 2014-08-27 | 2016-03-02 | 中强光电股份有限公司 | Projection display system and correction method of projection area |
| CN105590615A (en) * | 2014-11-10 | 2016-05-18 | 乐金显示有限公司 | Apparatus And Method For Correcting Image Distortion And Curved Display Device Including The Same |
| CN106683057A (en) * | 2016-12-23 | 2017-05-17 | 中国计量大学 | Method for automatically geometrically correcting multi-projection display walls with optional continuous screens with curved surfaces |
| CN106707666A (en) * | 2017-02-03 | 2017-05-24 | 苏州佳世达光电有限公司 | Projection display device |
| CN107547881A (en) * | 2016-06-24 | 2018-01-05 | 上海顺久电子科技有限公司 | A kind of auto-correction method of projection imaging, device and laser television |
| CN107547880A (en) * | 2016-06-24 | 2018-01-05 | 上海顺久电子科技有限公司 | A kind of auto-correction method of projection imaging, device and laser television |
| CN110377865A (en) * | 2019-09-07 | 2019-10-25 | 上海飞来飞去新媒体展示设计有限公司 | A kind of ball curtain combination of edge weight computation method merging Bezier |
| CN111131800A (en) * | 2018-10-31 | 2020-05-08 | 中强光电股份有限公司 | Image splicing and fusing method and projection system |
| CN111192552A (en) * | 2019-12-13 | 2020-05-22 | 南京乐飞航空技术有限公司 | Multi-channel LED spherical screen geometric correction method |
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| CN102061427A (en) * | 2009-11-18 | 2011-05-18 | 黑龙江建龙钢铁有限公司 | Production method of HRBF500E high-performance shock-resistant reinforcing steel bar |
| CN102061427B (en) * | 2009-11-18 | 2012-11-21 | 黑龙江建龙钢铁有限公司 | Production method of HRBF500E high-performance shock-resistant reinforcing steel bar |
| CN101950247A (en) * | 2010-09-17 | 2011-01-19 | 广东威创视讯科技股份有限公司 | Method for correcting deformed picture |
| CN102654826A (en) * | 2011-05-27 | 2012-09-05 | 上海华博信息服务有限公司 | Curved surface correction information processing method and device based on laser locator |
| CN102681303A (en) * | 2011-08-15 | 2012-09-19 | 上海华博信息服务有限公司 | Method and device for processing projection calibration information on basis of information feedback |
| CN102387330A (en) * | 2011-10-27 | 2012-03-21 | 王悦 | Imaging method on irregular surface |
| CN103034032A (en) * | 2012-11-30 | 2013-04-10 | 无锡羿飞科技有限公司 | Multi-projector overlying automatic calibration method based on spherical display |
| CN104599312B (en) * | 2013-10-30 | 2017-09-05 | 北京莫高丝路文化发展有限公司 | Ball curtain multi-channel projection emulation mode |
| CN104599312A (en) * | 2013-10-30 | 2015-05-06 | 北京莫高丝路文化发展有限公司 | Simulation method of full-dome multi-channel projection |
| CN105323517A (en) * | 2014-07-16 | 2016-02-10 | 腾讯科技（深圳）有限公司 | Projection picture automatic calibration method and projection picture automatic calibration device |
| CN105376540A (en) * | 2014-08-27 | 2016-03-02 | 中强光电股份有限公司 | Projection display system and correction method of projection area |
| CN105590615A (en) * | 2014-11-10 | 2016-05-18 | 乐金显示有限公司 | Apparatus And Method For Correcting Image Distortion And Curved Display Device Including The Same |
| CN105590615B (en) * | 2014-11-10 | 2019-02-01 | 乐金显示有限公司 | Device and method for correcting image distorsion and the bending display device including it |
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| CN107547881B (en) * | 2016-06-24 | 2019-10-11 | 上海顺久电子科技有限公司 | A kind of auto-correction method of projection imaging, device and laser television |
| CN107547881A (en) * | 2016-06-24 | 2018-01-05 | 上海顺久电子科技有限公司 | A kind of auto-correction method of projection imaging, device and laser television |
| CN107547880A (en) * | 2016-06-24 | 2018-01-05 | 上海顺久电子科技有限公司 | A kind of auto-correction method of projection imaging, device and laser television |
| CN106683057A (en) * | 2016-12-23 | 2017-05-17 | 中国计量大学 | Method for automatically geometrically correcting multi-projection display walls with optional continuous screens with curved surfaces |
| CN106707666A (en) * | 2017-02-03 | 2017-05-24 | 苏州佳世达光电有限公司 | Projection display device |
| CN111131800A (en) * | 2018-10-31 | 2020-05-08 | 中强光电股份有限公司 | Image splicing and fusing method and projection system |
| CN111131800B (en) * | 2018-10-31 | 2022-02-18 | 中强光电股份有限公司 | Image splicing and fusing method and projection system |
| US11386535B2 (en) | 2018-10-31 | 2022-07-12 | Coretronic Corporation | Image blending method and projection system |
| US11758099B2 (en) | 2018-10-31 | 2023-09-12 | Coretronic Corporation | Image blending method, projection system and processing device thereof |
| CN110377865A (en) * | 2019-09-07 | 2019-10-25 | 上海飞来飞去新媒体展示设计有限公司 | A kind of ball curtain combination of edge weight computation method merging Bezier |
| CN111192552A (en) * | 2019-12-13 | 2020-05-22 | 南京乐飞航空技术有限公司 | Multi-channel LED spherical screen geometric correction method |
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