CN201947404U - Panoramic video real-time splice display system - Google Patents
Panoramic video real-time splice display system Download PDFInfo
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- CN201947404U CN201947404U CN2010201554327U CN201020155432U CN201947404U CN 201947404 U CN201947404 U CN 201947404U CN 2010201554327 U CN2010201554327 U CN 2010201554327U CN 201020155432 U CN201020155432 U CN 201020155432U CN 201947404 U CN201947404 U CN 201947404U
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Abstract
The utility model provides a panoramic video real-time splice display system. The system adopts a group of common cameras to perform panoramic coverage shooting, adopts the video jigsaw technology and the edge blending large-screen projection splice display technology, splices multi-way videos into a one-way, wide-angle, large-vision and high-resolution panoramic video in a real-time manner, inputs the panoramic video to an edge blending large-screen projection splice display system, and projects to a large screen at length. The system overcomes the fixed model of the panoramic camera, flexibly changes the relative position and focal length of the camera, upgrades a conventional monitoring system conveniently and effectively, provides a panoramic picture, and improves both the accuracy and speediness of a decision.
Description
Technical field
The utility model belongs to the panoramic video splice displaying system, relate to multiple-camera shooting, the large screen-fused projection tiled display of video picture mosaic technology and edge technology, do not require that particularly camera has strict fixing relative position and angle, do not require the panoramic video splicing that optical parametric such as camera focal length must strict conformance.Can be easily and effectively upgrade, panorama is provided existing supervisory control system, so that effectively formulate decision-making, as traffic surveillance and control center, FCC, and occasions such as airport, railway station, hotel, sub-district, supermarket, parking lot.
Background technology
Along with scientific and technological progress, supervisory control system constantly develops perfect, and becoming functions such as collection IMAQ, analysis, alarm gradually is the intelligent management platform of one.But the common camera visual field is narrow, and the anamorphose of wide-angle imaging machine is serious, remains a major defect of existing supervisory control system.Though utilize cradle head control, can realize 360 ° of overall view monitorings by rotary camera, synchronization also can only be seen the picture of a certain angle, still can't solve the problem that lacks panorama, the blind area can occur inevitably during monitoring.
Advance over year, 360 ° of panoramic cameras occurred, as its name suggests, disposable exactly all information of including all around.The key technology of panoramic camera is how to generate panoramic video, mainly contains two kinds of methods at present.One, be according to bionics (flake), it is disposable with 360 ° of levels, vertical 180 ° information imaging to adopt the projection of physioptial sphere to add principle of reflection, the software that adopts hardware to carry is again changed, mode with the human eye custom presents picture, 360 ° of panoramic cameras of typical products such as Japanese Sony Corporation.This method image resolution ratio is lower, and definition is relatively poor, and there is moderate finite deformation in 180 ° of normal plane views of the suitable human eye that presents.Its two, be to adopt the camera of a plurality of fixed-site to catch the scene in different angles space, video image is spliced obtain panoramic video, the PARASCAN panoramic camera that typical products such as U.S. Honeywell company release then.This method can provide higher resolution, but has splicing slight crack and light and shade difference.Domestic product-free still occurs, but the research to this also deepens continuously, " generate the method for panoramic video according to multi-visual angle video stream " (publication number CN 101146231A) as patent of invention, and utility model patent " a kind of panoramic camera " (patent CN 201409204).
In fact; a lot of monitoring occasions need remote monitor, and as airport hardstand, highway etc., what needed this moment is wide-angle, the big visual field, high-resolution, the little panoramic picture of distortion; the horizontal view angle reaches 150 °～180 °, and the vertical angle of view reaches 70 °～120 ° and gets final product.Because the technical characterstic of product, 360 ° of panoramic cameras relatively are fit to the video monitoring of small space, be not proper for such an occasion, and the price comparison costliness.
The preferred plan of dealing with problems is on the basis of original supervisory control system, utilizes multiple-camera video picture mosaic technology to obtain panoramic video.Importantly, in order to adapt to various scenes, and be convenient to Installation and Debugging, some restrictions of the existing video-splicing system of its Gonna breakthrough, thus the relative position, the angle that do not require camera are strict fixing, do not require that also optical parametric such as camera focal length must strict conformance.For example in patent CN 101146231A, propose " each camera on horizontal plane with the same center of circle to around different directions take " condition just too harsh.At present, the panorama splicing under this comparatively loose shooting condition also only is applied in the splicing field of still photo, and the commercial product with the digital camera binding is arranged, and some open source softwares are also arranged.This technology mainly based on yardstick constant eigentransformation extract the characteristic point of image, carry out the characteristic matching between image, thereby obtain the coordinate transform of image, generate seamless spliced panoramic picture, at last fusion treatment is carried out in the overlapping region of image, make the equilibrium of view picture picture brightness.The advance of this technology is the influence that it is not subjected to image zoom ratio, translation and rotation, and it also is limited being subjected to the influence of brightness variation and 3D projection, therefore makes shooting condition reduce greatly.Because the algorithm complexity, the weakness of this technology is the real-time problem at present.
Its resolution of panoramic video that splicing is good is directly proportional with the resolution and the number of camera, and many panoramic videos resolution is high more more, the visual field is big more for the camera number.For the monitor staff who makes the command and control center can judge and make a strategic decision fast and accurately, panoramic video need show in the large screen display system of a support ultrahigh resolution, super large display frame.DLP (digital light processing), LCD (liquid crystal), PDP large-screen splicing wall products such as (plasmas) are arranged in the market, and its advantage is high definition, high brightness, and shortcoming is that box body splicing seam, cost and maintenance cost height are arranged.Edge large screen-fused projection tiled display technology is a kind of novel seamless tiled display technology that emerges rapidly recently.It carries out imbricate with the picture that one group of projector projects, and demonstrates one by the edge integration technology and do not have slit, super large, high-resolution view picture picture, and the effect of picture similarly is the picture of projector's projection.Projection screen can be plane or curved surface, medium even can be a face wall.The remarkable advantage of this technology is not have splicing seams, more can embody the integrality of picture, and better visual effect is arranged, and cheap.
Summary of the invention
Can't provide panoramic picture in order to solve existing supervisory control system, be unfavorable for that commanding in the rear control centre formulates the problem of correct decisions, the utility model provides a solution, this scheme can be utilized existing watch-dog, the real-time video of front-end collection is carried out the panorama splicing, and will splice good panoramic video by the large screen-fused display system output in edge.
The technical scheme that its technical problem that solves the utility model adopts is: make up the real-time splice displaying system of panoramic video by shooting unit, panoramic video splicing system, the large screen-fused projection splice displaying system in edge, projection unit and large-screen.Front end uses one group of video camera to carry out panorama to the scene of needs monitoring and covers shooting, multi-channel video is input to the panoramic video splicing system after being pooled to rear Surveillance center, splicing in real time generates one road wide-angle, the big visual field, high-resolution full view frequently, panoramic video is input to the large screen-fused projection splice displaying system in edge and carries out geometric correction, picture cutting, merges tape handling, color correction, luminance proportion, and export to multi-section projector and project on the large-screen, finally demonstrating one does not have slit, super large, high-resolution panorama.
The real-time splice displaying system of the utility model panoramic video, it specifically is characterised in that:
1. the shooting unit is arranged with the MxN matrix-style, and for satisfying the requirement of image splicing, the level of adjacent camera and pitching angle are no more than 30 °, and 10%～30% overlapping region is arranged between the adjacent photographic images, and the focal length of each camera lens can be different.
2. the panoramic video that generates of panoramic video splicing system, its resolution and the visual field increase seamless, luminance proportion along with increasing of camera number.
3. use one group of projector, it is arranged with matrix-style, just to throw or the rear-projection mode is throwed.
4. use large-screen, screen shape can be plane or curved surface, medium even can be a face wall.
5. can be used as a kind of basis of realizing the real-time tiled display of panoramic video, every variation of under enlightenment of the present utility model, making, or with the utlity model has identical or close technical scheme, all fall within the protection range of the present utility model.
The beneficial effects of the utility model are: can transform on the basis of existing supervisory control system, obtain the panoramic video of scene, help the rear and fast and effeciently formulate correct decisions.Installation and Debugging are quick, the transformation maintenance cost is low, are the solutions of practical.
Description of drawings
Fig. 1 is operation principle of the present utility model and schematic flow sheet.
Fig. 2 is a high-level schematic functional block diagram of the present utility model.
Fig. 3 is the splicing of the panorama in a panoramic video splicing system parameter generation module software flow schematic diagram in the utility model.
Fig. 4 is the large screen-fused projection splicing system in an edge software flow schematic diagram in the utility model.
Among the figure, 1. shooting unit, 2. panoramic video splicing system, 21. panoramas splicing parameter generation module, the 3. large screen-fused projection splice displaying system in edge, 4. projection unit and large-screen.
Embodiment
As shown in Figure 1, the utility model is realized the real-time splicing and the demonstration of panoramic video by " shooting unit " (1), " panoramic video splicing system " (2), " the large screen-fused projection splice displaying system in edge " (3) and " projection unit and large-screen " (4) four steps.
The first step: adopt one group of video camera that the scene of needs monitoring is carried out panorama and cover shooting.In order to guarantee perfect picture splicing, need overlapping about 10%～30% all around between every video camera and adjacent camera is taken the image, to guarantee to extract abundant matching characteristic point in the overlapping region; And level and pitching angle generally all are no more than 30 °, to reduce the influence that the 3D projective transformation causes to splicing.Every focus of camera can be different, also need not fix position and angle toward each other as panoramic camera, therefore have very big flexibility when installing and debug.
Second step: use the panoramic video splicing system, a plurality of videos that its unit of will making a video recording is taken carry out in real time splicing and overlapping region fusion treatment automatically, thereby generate the panoramic video of a big visual field, wide-angle, high-resolution, luminance proportion.
The 3rd step: use the large screen-fused projection splice displaying system in existing edge, shape according to large-screen, carry out automatic geometric correction with splicing good panoramic video, and panoramic video is cut into overlapped a plurality of passage videos according to the number of projector, automatically calculate and merge band, carry out color correction and luminance proportion simultaneously.
The 4th step: use one group of projector and a large-screen.Every projector inserts a passage of edge emerging system (3), and multi-channel video is projected on the large-screen, does not have slit, super large, high-resolution panoramic video picture thereby demonstrate one, and the effect of picture similarly is the picture of projector's projection.Be an example of just throwing among the figure,, also can adopt the rear-projection mode, select just throwing accordingly curtain or rear-projection curtain simultaneously according to the demand at scene.Because edge emerging system (3) carries out automatic geometric correction, therefore the shape of curtain does not have strict the qualification yet.
As shown in Figure 2, the Control Software of panoramic video splicing system (2) mainly contains 5 functional modules in the utility model: video acquisition module (21), panorama splicing parameter generation module (22), parameter list (23), real time panoramic concatenation module (24) and demonstration output module (25).Wherein, video acquisition module (21) is used to gather the multichannel camera video, can directly import on the one hand to show that output module (25) shows multi-channel video; Be used to intercept still image input panorama splicing parameter generation module (22) on the other hand.Panorama parameter generation module (22) comprises various complex image analyses, Processing Algorithm, is used to generate splicing required geometric transformation parameter and the required fusion parameters of luminance proportion, and parameter is deposited in the parameter list (23).This module (22) is the nucleus module in the panoramic video splicing system, but its need are during system's Installation and Debugging, perhaps when the camera position change, even can select automatic mode to carry out parameter and rebuild, belong to the off-line pretreatment module on appropriate opportunity.In case the panorama parameter generates, video acquisition module (21) then is input to video image real time panoramic concatenation module (24), this module utilizes the parameter in the parameter list (23) to carry out the splicing of panoramic picture and merge calculating, reaching the real-time requirement, and will splice good panoramic picture and export to and show output module (25).
As shown in Figure 3, panorama splicing parameter generation module (22) is mainly realized by five steps.The first step: the constant local feature of yardstick that extracts every width of cloth input picture; Second step: the constant local feature of yardstick of coupling adjacent image; The 3rd step: the projective transformation matrix that calculates every width of cloth image; The 4th step: the fusion treatment in doubling of the image zone; The 5th step: generate splicing, fusion parameters.
As shown in Figure 4, the Control Software of the large screen-fused projection splice displaying system in edge (3) mainly realizes by five steps in the utility model.The first step: the panoramic picture to input carries out geometric correction, to adapt to difform large-screen; Second step: the number according to projector is cut panoramic picture, is divided into a plurality of passages, and certain overlapping region is arranged between the adjacency channel; The 3rd step: each channel image is carried out the light fusion tape handling of advancing to fade out; The 4th step: each channel image is carried out color correction process; The 5th step: each channel image is carried out luminance proportion handle.At last each channel image is exported to the homolographic projection machine.
Claims (4)
1. real-time splice displaying system of panoramic video, comprise shooting unit, panoramic video splicing system, the large screen-fused projection splice displaying system in edge, projection unit and large-screen, it is characterized in that: front end adopts one group of video camera that the scene of needs monitoring is carried out panorama and covers shooting, multi-channel video is pooled to rear input panoramic video splicing system, splicing in real time generates one road wide-angle, big visual field panoramic video, panoramic video is transferred to the large screen-fused projection splice displaying system in edge, finally by the projection unit panoramic video is projected on the large-screen.
2. the real-time splice displaying system of panoramic video according to claim 1, it is characterized in that: the shooting unit is arranged with the MxN matrix-style, the level of adjacent camera and pitching angle are no more than 30 °, 10%～30% overlapping region is arranged between the adjacent photographic images, and the focal length of each camera lens can be different.
3. the real-time splice displaying system of panoramic video according to claim 1 is characterized in that: use one group of projector, it is arranged with matrix-style, just to throw or the rear-projection mode is throwed.
4. the real-time splice displaying system of panoramic video according to claim 1 is characterized in that: use large-screen, screen shape can be plane or curved surface.
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| CN102354449A (en) * | 2011-10-09 | 2012-02-15 | 昆山市工业技术研究院有限责任公司 | Internet of vehicles-based method for realizing image information sharing and device and system thereof |
| CN102510482A (en) * | 2011-11-29 | 2012-06-20 | 蔡棽 | Image splicing reconstruction and overall monitoring method for improving visibility and visual distance |
| CN102523409A (en) * | 2011-11-22 | 2012-06-27 | 佛山市毅丰电器实业有限公司 | Equipment and system for controlling image splicing function of projector based on digital multiplex (DMX) protocol |
| CN103002249A (en) * | 2011-09-09 | 2013-03-27 | 中国航天科工集团第三研究院第八三五八研究所 | Image splicing based SDI (serial digital interface) panorama pickup system |
| CN103268648A (en) * | 2013-05-30 | 2013-08-28 | 江苏科技大学 | Multi-lens wide-angle automobile data recorder |
| CN103618881A (en) * | 2013-12-10 | 2014-03-05 | 深圳英飞拓科技股份有限公司 | Multi-lens panoramic stitching control method and multi-lens panoramic stitching control device |
| CN104618648A (en) * | 2015-01-29 | 2015-05-13 | 桂林长海发展有限责任公司 | Panoramic video splicing system and splicing method |
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| CN112714304A (en) * | 2020-12-25 | 2021-04-27 | 新华邦(山东)智能工程有限公司 | Large-screen display method and device based on augmented reality |
| CN115314636A (en) * | 2022-08-03 | 2022-11-08 | 天津华来科技股份有限公司 | Multi-channel video stream processing method and system based on camera |
| CN115314636B (en) * | 2022-08-03 | 2024-06-07 | 天津华来科技股份有限公司 | Multi-path video stream processing method and system based on camera |
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