CN100523994C - Control method for synchronization of multiscreen playing suitable for irregular screen - Google Patents
Control method for synchronization of multiscreen playing suitable for irregular screen Download PDFInfo
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- CN100523994C CN100523994C CNB2007100375197A CN200710037519A CN100523994C CN 100523994 C CN100523994 C CN 100523994C CN B2007100375197 A CNB2007100375197 A CN B2007100375197A CN 200710037519 A CN200710037519 A CN 200710037519A CN 100523994 C CN100523994 C CN 100523994C
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Abstract
This invention relates to one multi-screen play simultaneous control method for irregular screen, which comprises the following steps: adopting Bezier net grid to process deformation on the picture to fit the projection to irregular screen; then through control end for collection and process on multi-screen picture to fulfill deformation correction; finally processing edge melting; in playing process, through control end processing multi-screen simultaneous control.
Description
Technical field
The present invention relates to multi-screen demonstration and control, particularly relate to a kind of control method for synchronization 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 seamless spliced technology that the seamless fusion of image shows be wherein important technology it.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.The shortcoming of this method is, in case show surroundings changes, shows that perhaps the place needs to change, and just must do the work of treatment of being correlated with again to the broadcast film source, therefore, produced great difficulty for the maintenance and the renewal of system.
No matter it is be to adopt which kind of connecting method, all closely related with synchronous control technique.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of control method for synchronization of multiscreen playing that is suitable for sub-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 control method for synchronization of multiscreen playing that is applicable to irregular screen, this method adopts Bezier (Bezier) grid that the multi-screen picture is out of shape earlier, so that its projection can be applicable to irregular screen; By control end the multi-screen picture is out of shape correction then, finishes the automatic splicing of multi-screen picture; At last the picture edge being carried out the edge merges; In playing process, carry out the synchro control that multi-screen is play by control end to playing end, it is characterized in that described synchro control may further comprise the steps:
A. control end is play end and is sent message to each, and the present frame of end, promptly current broadcast frame number are play in inquiry;
B. control end is waited for and is received each and plays the end feedback message;
C. control end judges whether to receive the present frame of all client feedback, if success, execution in step e; If unsuccessful, execution in step d.
D. control end judge whether overtime, if overtime, execution in step a; If not overtime, then enter step b;
E. control end calculates the most rational frame number as synchronization frame according to each present frame of playing the end feedback, and synchronization frame is according to each calculating of playing the present frame probability maximum of end feedback, and its effect provides synchronous reference;
F. play termination and receive the synchronization frame message that control end sends, the present frame of playing end is modified to synchronization frame;
G. control end judges whether that all present frames of playing end all have been modified to synchronization frame, if then finished control end to playing a synchro control of end; If not, execution in step h;
H. broadcast end that will be to be revised changes the next end of playing into; Execution in step f then.
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 characteristics such as low cost, synchronizing capacity are strong, and adopts client/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 process flow diagram of synchro control of the present invention;
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the present invention is combined into a giant-screen to a plurality of the small screen that have independent projector equipment, projects on the irregular screens such as arc curtain, ring curtain, ball curtain and hyperboloid curtain, and by software processing, realizes the synchronous playing of whole 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 adopts client/server (C/S) pattern, and common PC is set up into LAN, and control end PC timed sending query messages is given and play end PC, plays end PC and immediately current broadcast frame number is fed back to control end; Control end PC carries out synchro control according to feedack and judges, and control command is passed to each broadcast end PC; Play end PC and carry out the adjustment of broadcast state again according to control command.
Figure 2 shows that the idiographic flow of multi-screen synchro control of the present invention.System regularly carries out described synchronisation control means, finishes the synchro control that multi-screen is play.Below each step among the figure is described in detail:
In step 401, control end is play end and is sent message to each, and the present frame (current broadcast frame number) of end is play in inquiry.Execution in step 402 then.
In step 402, control end is waited for and is received each and plays the end feedback message.Execution in step 403 then.
In step 403, judge whether control end has received the present frame of all client feedback, if success, execution in step 405; If unsuccessful execution in step 404.
In step 404, judge whether overtimely, if overtime, enter in the step 401; If not overtime, then enter in the step 402;
In step 405, control end calculates the most rational frame number as synchronization frame according to each present frame of playing the end feedback.Synchronization frame is according to each calculating of playing the present frame probability maximum of end feedback, and its effect provides synchronous reference.Enter step 406 then;
In step 406, play termination and receive the synchronization frame message that control end sends, the present frame of playing end is modified to synchronization frame.Execution in step 407 then;
In step 407, judge whether that all present frames of playing end all have been modified to synchronization frame, if success has then been finished control end to playing a synchro control of end; If failure, execution in step 408;
In step 408, change broadcast end to be revised into the next end of playing.Execution in step 406 then.
Claims (3)
1. control method for synchronization of multiscreen playing that is applicable to irregular screen, this method adopt Bezier (Bezier) grid that the multi-screen picture is out of shape earlier, so that its projection can be applicable to irregular screen; By control end the multi-screen picture is out of shape correction then, finishes the automatic splicing of multi-screen picture; At last the picture edge being carried out the edge merges; In playing process, carry out the synchro control that multi-screen is play by control end to playing end, it is characterized in that described synchro control may further comprise the steps:
A. control end is play end and is sent message to each, and the present frame of end, promptly current broadcast frame number are play in inquiry;
B. control end is waited for and is received each and plays the end feedback message;
C. control end judges whether to receive the present frame of all client feedback, if success, execution in step e; If unsuccessful, execution in step d;
D. control end judge whether overtime, if overtime, execution in step a; If not overtime, then enter step b;
E. control end calculates the most rational frame number as synchronization frame according to each present frame of playing the end feedback, and synchronization frame is according to each calculating of playing the present frame probability maximum of end feedback, and its effect provides synchronous reference;
F. play termination and receive the synchronization frame message that control end sends, the present frame of playing end is modified to synchronization frame;
G. control end judges whether that all present frames of playing end all have been modified to synchronization frame, if then finished control end to playing a synchro control of end; If not, execution in step h;
H. broadcast end that will be to be revised changes the next end of playing into; Execution in step f then.
2. a kind of control method for synchronization 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.
3. a kind of control method for synchronization of multiscreen playing that is applicable to irregular screen according to claim 1 is characterized in that, described irregular screen comprises ring curtain, ball curtain or hyperboloid curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100375197A CN100523994C (en) | 2007-02-13 | 2007-02-13 | Control method for synchronization of multiscreen playing suitable for irregular screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100375197A CN100523994C (en) | 2007-02-13 | 2007-02-13 | Control method for synchronization of multiscreen playing suitable for irregular screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101017317A CN101017317A (en) | 2007-08-15 |
| CN100523994C true CN100523994C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100375197A Expired - Fee Related CN100523994C (en) | 2007-02-13 | 2007-02-13 | Control method for synchronization of multiscreen playing suitable for irregular screen |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465115B (en) * | 2008-12-25 | 2010-10-06 | 大道计算机技术(上海)有限公司 | Network display method for large screen display system |
| CN102426514B (en) * | 2011-11-07 | 2014-08-20 | 广东威创视讯科技股份有限公司 | Synchronous displaying method and device for large-screen spliced wall |
| CN103354528B (en) * | 2013-06-28 | 2017-05-03 | 北京智谷睿拓技术服务有限公司 | Method and device for multi-stream synchronization |
| CN103347144B (en) * | 2013-07-01 | 2016-08-24 | 广东威创视讯科技股份有限公司 | A kind of video synchronization method based on camera shooting |
| CN103974050B (en) * | 2014-05-13 | 2016-04-13 | 中国人民解放军68029部队 | Unit multichannel projective synchronization method |
| CN104486659A (en) * | 2014-12-05 | 2015-04-01 | 华东师范大学 | Edge blending processing and control system and edge blending processing and control method for playing videos |
| CN106569760B (en) * | 2016-04-23 | 2020-10-16 | 上海大学 | Large multi-screen GIS display system based on synchronous control and display method thereof |
| CN108227348A (en) * | 2018-01-24 | 2018-06-29 | 长春华懋科技有限公司 | Geometric distortion auto-correction method based on high-precision vision holder |
| CN108259966B (en) * | 2018-04-11 | 2020-02-18 | 大连理工大学 | Multimedia large-screen synchronous playing method based on GPS time service |
| CN110493621A (en) * | 2019-09-26 | 2019-11-22 | 江西省创海科技有限公司 | A kind of double arc curtain projection systems and broadcast control system |
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| CN101017317A (en) | 2007-08-15 |
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