CN103533313B - Electronic chart panoramic video synthesis display packing and system based on geographical position - Google Patents
Electronic chart panoramic video synthesis display packing and system based on geographical position Download PDFInfo
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- CN103533313B CN103533313B CN201310535122.6A CN201310535122A CN103533313B CN 103533313 B CN103533313 B CN 103533313B CN 201310535122 A CN201310535122 A CN 201310535122A CN 103533313 B CN103533313 B CN 103533313B
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Abstract
The present invention provides a kind of electronic chart panoramic video synthesis display packing based on geographical position, comprises the steps：The point of observation being input on electronic chart is obtained, default half path search photographic head is pressed centered on point of observation；The parameter information of each photographic head that acquisition is searched；According to the parameter information of each photographic head, screening coverage has overlap photographic head with the viewing area of current observation point；After the video signal of the photographic head for having overlap is synthesized, output display is in a video window.The present invention also provides corresponding system, can synthesize panoramic video signal, improves monitoring effect.
Description
Technical field
The present invention relates to video monitoring processing technology field, more particularly to a kind of electronic chart based on geographical position is complete
Scape Video Composition display packing, a kind of electronic chart panoramic video synthesis display system based on geographical position.
Background technology
Enriching constantly and develop with city management means, in order to be able to the traffic to whole city, public security, environmental monitoring
Supervised etc. effectively, substantial amounts of monitoring camera is all deployed in each corner in city, in some emphasis sections and area
Domain, can also dispose multiple monitoring cameras, to realize to the round-the-clock and omnibearing monitoring in 24 hours of these regions.These monitoring
Camera signals are needing to check the live real-time condition of some regions by proprietary express network Access Control administrative center
When the monitoring signal in these regions is linked into the large screen display system of control centre.
Generally these monitoring signals all carry out the binding of position with the map of 2D or 3D, and user is needing to check showing for region
During situation, it is only necessary to the monitoring camera Head icon of corresponding region is clicked on map, on map, corresponding geographical position is just
The window video signal of this monitoring camera can be opened.In the especially complex region of some situations, or security level required is very
High region, often deploys multiple monitoring cameras, and these monitoring cameras are positioned proximate to, and simply the angle of alignment lenses is not
Together, with realization to the omnibearing monitoring in region, in this case, if these monitoring cameras will be checked on map simultaneously
Real time video signals, due to these control point positions closely, as shown in figure 1, going out all monitoring of installation at control point
The corresponding video window of photographic head is all opened, and the content of shooting of multiple window video signals has overlapping phenomenon, monitoring effect
It is poor.
The content of the invention
Based on this, the present invention provides a kind of electronic chart panoramic video synthesis display packing based on geographical position and is
System, can synthesize panoramic video signal, improve monitoring effect.
A kind of electronic chart panoramic video synthesis display packing based on geographical position, comprises the steps：
The point of observation being input on electronic chart is obtained, default half path search photographic head is pressed centered on point of observation；
The parameter information of each photographic head that acquisition is searched；
According to the parameter information of each photographic head, screening coverage has overlap taking the photograph with the viewing area of current observation point
As head；
After the video signal of the photographic head for having overlap is synthesized, output display is in a video window.
A kind of electronic chart panoramic video synthesis display system based on geographical position, including：
Search module, for obtaining the point of observation being input on electronic chart, presses default radius centered on point of observation
Search photographic head；
Acquisition module, for obtaining the parameter information of each photographic head for searching；
Screening module, for the parameter information according to each photographic head, screening coverage is visual with current observation point
There is the photographic head of overlap in region；
Synthesis display module, regards at one for output display after the video signal of the photographic head for having overlap is synthesized
In frequency window.
Above-mentioned electronic chart panoramic video synthesis display packing and system based on geographical position, by phase on multiple positions
Neighbour, the video that monitor area has the monitoring camera of certain overlap are automatically synthesized a panoramic video and show on map, effectively
Solve that single monitoring camera field range is little, the adjacent multiple monitoring camera videos in position are mutual when shown on map simultaneously
The problem mutually blocked, at the same can also on map, the change of position is combined to the panoramic video of different visual angles according to the observation, improve
The efficiency of conduct monitoring at all levels is carried out to extensive area.
Description of the drawings
The schematic diagram that Fig. 1 is shown in electronic chart uplifting window for multiple neighbouring camera videos in conventional art.
Fig. 2 is electronic chart panoramic video synthesis display packing stream in one embodiment of the present invention based on geographical position
Journey schematic diagram.
Fig. 3 is the schematic diagram of search photographic head in Fig. 2.
Fig. 4 is the schematic diagram of point of observation viewing area in Fig. 2.
Fig. 5 is the schematic diagram of photographic head coverage in Fig. 2.
Fig. 6 has the photographic head schematic diagram of overlap for determination in Fig. 2.
Fig. 7 is by the schematic diagram of multiple one panoramic video of Video Composition being positioned adjacent in Fig. 2.
Fig. 8 is electronic chart panoramic video synthesis display system knot in one embodiment of the present invention based on geographical position
Structure schematic diagram.
Specific embodiment
The present invention is described in further detail with reference to embodiment and accompanying drawing, but embodiments of the present invention are not limited to
This.
As shown in Fig. 2 be electronic chart panoramic video synthesis display packing of the present invention based on geographical position, including it is as follows
Step：
The point of observation being input on S21, acquisition electronic chart, presses default half path search shooting centered on point of observation
Head；
Electronic chart is numerical map, is to utilize computer technology, the map for storing in a digital manner and consulting.Electronically
Figure generally uses vector mode image storage, and map scale is enlarging or reducing or rotates；In this step, real-time detection user is defeated
The point of observation for entering, the position put according to the observation, the photographic head searched near point of observation centered on point of observation, search parameter can root
Determine according to default radius.
In a preferred embodiment, it is described can the step of default half path search photographic head is pressed centered on point of observation
For：
The point centered on the point of observation, generates cylindrical space region with pre-set radius, detects in the cylindrical empty
Between photographic head in region；
As shown in figure 3, with point of observation P（X, y, z）The area of space of a cylinder is generated with search radius R, according to this
Position of the cylindrical space region in electronic map coordinates system, can detect that the shooting included in cylindrical space region
Head；By the cylindrical space region generated with point of observation and search radius, can fast search go out in cylindrical space region
Comprising photographic head.
The parameter information of each photographic head that S22, acquisition are searched；
After searching photographic head, the parameter information of each photographic head, including locus are determined, azimuth, lens focus,
The parameter informations such as the angle of visual field, radius.
S23, according to the parameter information of photographic head, screening coverage has overlap taking the photograph with the viewing area of current observation point
As head；
According to the parameter information of photographic head, the coverage of photographic head is generated, according to current observation point and Current electronic ground
The parameter of figure, determines the viewing area of point of observation；Judge whether the coverage of photographic head has weight with the viewing area of point of observation
Folded, acquisition has the photographic head of overlap.
In a preferred embodiment, space coordinatess of the point of observation on the electronic chart, field of view angle can be obtained,
And the far plane and hither plane of electronic chart, generate the viewing area of the point of observation；
As shown in figure 4, obtaining the now corresponding locus coordinate P (x, y, z) of point of observation and current field of view angle
The parameter informations such as Fov, far plane and hither plane, far plane and hither plane be in 3D map color applying drawings, point of observation it is visual
Scope arrange parameter, the map only fallen with the spatial dimension surrounded by two planes of far plane and hither plane can just be carried out
Display is rendered, as shown in Figure 4.Calculate the viewing area PABCDEFGH corresponding to current observation point；With the space bit of point of observation
It is parameter to put coordinate and the angle of visual field, far plane and hither plane, can quickly generate viewing area of the point of observation in electronic chart.
In a preferred embodiment, the parameter information of the photographic head includes the shooting azimuth of photographic head, the angle of visual field, depending on
Line direction, focal length generate the viewing area of the photographic head according to the parameter information；
As shown in figure 5, according to camera space position V (x, y, z), azimuth（α,β,γ）, angle of visual field fov, sight line side
To, the coverage of the photographic head that the lens parameters such as focal length f determine, i.e. the visible space region VABCD of the photographic head in figure；With
The locus of photographic head, azimuth, the angle of visual field, direction of visual lines and focal length, can quickly generate the coverage of photographic head.
In a preferred embodiment, obtaining the step of having overlap photographic head with the viewing area of current observation point can be：
Set up the space coordinates with the point of observation as zero；
The viewing area of photographic head is transformed in the space coordinates, judge the viewing area of photographic head whether with institute
There is overlap the viewing area for stating point of observation；
It is determined that there is the photographic head of overlap.
Quickly to judge whether the viewing area of point of observation and the coverage of photographic head have overlap, as shown in fig. 6, logical
The mode of transformed space coordinate system is crossed, space coordinates is set up for origin with point of observation space coordinatess P (x, y, z), each is taken the photograph
As the viewing area of head is transformed in above-mentioned space coordinates, the viewing area of the coverage and point of observation of photographic head is all united
One coverage that 3 photographic head are shown in same coordinate system, in figure, the corresponding viewing area of photographic head
V1A1B1C1D1, V2A2B2C2D2 and point of observation viewing area ABCDEFGH have an overlapping region, and V3A3B3C3D3 regions with see
Examine a viewing area not overlap；It is final to determine that the photographic head for having overlap is V1 and V2.
S24, the video signal of the photographic head for having overlap is synthesized after output display in a video window；
It is determined that the video signal of photographic head after having the photographic head of overlap, is obtained, and using the real-time synthetic technology of panorama sketch, will be each
After individual video signal is synthesized, output display in a video window, as shown in Figure 7.
As shown in the program flow diagram of Fig. 8, the present invention is expanded on further by a specific embodiment again next：
Step 1, the spacing-visible region for obtaining current observation point on map：User is roamed when browsing on map, from three
The corresponding locus coordinate P (x, y, z) of now point of observation and current field of view angle Fov are obtained in dimension map, antimetropia is put down
The parameter informations such as face, calculate viewing area ABCDEFGH corresponding to current observation point, as shown in Figure 4.
Control point near step 2, search point of observation：The distance parameter value that set location is closed on, searches for the sight of step 1
Point centered on a position is examined, the control point camera list fallen in the cylindrical space region of search radius R, as shown in figure 3,
And obtain the parameter informations such as the locus of each photographic head, azimuth, lens focus, the angle of visual field, radius.
Step 3, calculating camera space viewing area：If photographic head is not searched in step 2, return to step 1 is no
Then to the monitoring camera searched in step 2, according to the locus of each photographic head, azimuth, lens parameters calculate which
Corresponding spacing-visible region VABCD, as shown in Figure 5.
Step 4, spatial alternation：The coordinate of the viewing area VABCD in step 3 is transformed to into step by space conversion matrices
It is in coordinate system in rapid 1 with point of observation P (x, y, z) for zero, visual in order to carry out in same space coordinates
Region overlaps and judges.
Step 5, photographic head screening：The camera space viewing area of the coordinate transform in step 4 is judged successively whether
Have overlap with the spacing-visible regional extent of point of observation in step 1, as shown in fig. 6, the corresponding viewing area of photographic head
V1A1B1C1D1, V2A2B2C2D2 and point of observation viewing area ABCDEFGH have an overlapping region, and V3A3B3C3D3 regions with see
Examine a viewing area not overlap.If camera space viewing area has overlap with point of observation spacing-visible region, by this
The corresponding signal of monitoring camera adds the video signal source list for carrying out panoramic video synthesis.
Step 6, panoramic video synthesis：If the signal source list that panoramic video synthesis is carried out in step 5 is sky, step is returned
Rapid 1, otherwise process into panoramic video synthesis, according to the position of the video signal source in list, direction, focal length parameter information will
Multiple videos synthesize a panoramic video signal in real time.
Step 7, panoramic video show：The panoramic video signal of synthesis is shown in the position uplifting window of point of observation.
Step 8, the process for when the position of point of observation or the angle of visual field and orientation change in map, repeating the above.
As shown in figure 8, being the knot that a kind of electronic chart panoramic video based on geographical position of the present invention synthesizes display system
Structure schematic diagram, including：
Search module 81, for obtaining the point of observation being input on electronic chart, presses default half centered on point of observation
Path search photographic head；
Electronic chart is numerical map, is to utilize computer technology, the map for storing in a digital manner and consulting.Electronically
Figure generally uses vector mode image storage, and map scale is enlarging or reducing or rotates；In this step, real-time detection user is defeated
The point of observation for entering, the position put according to the observation, the photographic head searched near point of observation centered on point of observation, search parameter can root
Determine according to default radius.
In a preferred embodiment, the search module 81 is additionally operable to：
The point centered on the point of observation, generates cylindrical space region with pre-set radius, detects in the cylindrical empty
Between photographic head in region；
As shown in figure 3, with point of observation P（X, y, z）The area of space of a cylinder is generated with search radius R, according to this
Position of the cylindrical space region in electronic map coordinates system, can detect that the shooting included in cylindrical space region
Head.
Acquisition module 82, for obtaining the parameter information of each photographic head for searching；
After searching photographic head, the parameter information of each photographic head, including locus are determined, azimuth, lens focus,
The parameter informations such as the angle of visual field, radius.
Screening module 83, for the parameter information according to each photographic head, screening coverage can with current observation point
Viewed area has the photographic head of overlap；
According to the parameter information of photographic head, the coverage of photographic head is generated, according to current observation point and Current electronic ground
The parameter of figure, determines the viewing area of point of observation；Judge whether the coverage of photographic head has weight with the viewing area of point of observation
Folded, acquisition has the photographic head of overlap.
In a preferred embodiment, the screening module 83 is additionally operable to obtain the point of observation on the electronic chart
Space coordinatess, field of view angle, and the far plane and hither plane of electronic chart, generate the viewing area of the point of observation；
As shown in figure 4, obtaining the now corresponding locus coordinate P (x, y, z) of point of observation and current field of view angle
The parameter informations such as Fov, far and near view plane, calculate the viewing area P-ABCDEFGH corresponding to current observation point.
In a preferred embodiment, the parameter information of the photographic head in the acquisition module 82 includes the bat of photographic head
Azimuth, the angle of visual field, direction of visual lines and focal length are taken the photograph, and the screening module is additionally operable to the shooting be generated according to the parameter information
The viewing area of head；
As shown in figure 5, according to camera space position V (x, y, z), azimuth, the visible space area that lens parameters determine
Domain VABCD.
In a preferred embodiment, the screening module 83 is additionally operable to：
Set up the space coordinates with the point of observation as zero；
The viewing area of photographic head is transformed in the space coordinates, judge the viewing area of photographic head whether with institute
There is overlap the viewing area for stating point of observation；
It is determined that there is the photographic head of overlap；
As shown in fig. 6, space coordinates are set up for origin with point of observation space coordinatess P (x, y, z), by each photographic head
Viewing area is transformed in above-mentioned space coordinates, and the coverage of 3 photographic head is shown in figure, and photographic head is corresponding visual
Region V1A1B1C1D1, V2A2B2C2D2 and point of observation viewing area ABCDEFGH have an overlapping region, and V3A3B3C3D3 regions
It is not overlap with point of observation viewing area；It is final to determine that the photographic head for having overlap is V1 and V2.
Synthesis display module 84, for output display after the video signal of the photographic head for having overlap is synthesized at one
In video window；
It is determined that the video signal of photographic head after having the photographic head of overlap, is obtained, and using the real-time synthetic technology of panorama sketch, will be each
After individual video signal is synthesized, output display in a video window, as shown in Figure 7.
Electronic chart panoramic video synthesis display packing and system of the present invention based on geographical position, by phase on multiple positions
Neighbour, the video that monitor area has the monitoring camera of certain overlap are automatically synthesized a panoramic video and show on map, effectively
Solve that single monitoring camera field range is little, the adjacent multiple monitoring camera videos in position are mutual when shown on map simultaneously
The problem mutually blocked, at the same can also on map, the change of position is combined to the panoramic video of different visual angles according to the observation, improve
The efficiency of conduct monitoring at all levels is carried out to extensive area.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of electronic chart panoramic video based on geographical position synthesizes display packing, it is characterised in that comprise the steps：
The point of observation being input on electronic chart is obtained, default half path search photographic head is pressed centered on point of observation；
The parameter information of each photographic head that acquisition is searched；
According to the parameter information of each photographic head, screening coverage has overlap shooting with the viewing area of current observation point
Head；Wherein, space coordinatess of the point of observation on the electronic chart, field of view angle are obtained, and the remote of electronic chart is put down
Face and hither plane, generate the viewing area of the point of observation；
After the video signal of the photographic head for having overlap is synthesized, output display is in a video window.
2. the electronic chart panoramic video based on geographical position according to claim 1 synthesizes display packing, and its feature exists
In described the step of default half path search photographic head is pressed centered on point of observation to be：
The point centered on the point of observation, generates cylindrical space region with pre-set radius, detects in the cylindrical space area
Photographic head in domain.
3. the electronic chart panoramic video based on geographical position according to claim 2 synthesizes display packing, and its feature exists
In the parameter information of the photographic head includes the shooting azimuth of photographic head, the angle of visual field, direction of visual lines and focal length, according to described
Parameter information generates the viewing area of the photographic head.
4. the electronic chart panoramic video based on geographical position according to any one of claim 2～3 synthesizes display packing,
Characterized in that, the parameter information according to each photographic head, obtaining has overlap taking the photograph with the viewing area of current observation point
As the step of head it is：
Set up the space coordinates with the point of observation as zero；
The viewing area of photographic head is transformed in the space coordinates, judge the viewing area of photographic head whether with the sight
There is overlap the viewing area examined a little；
It is determined that there is the photographic head of overlap.
5. a kind of electronic chart panoramic video based on geographical position synthesizes display system, it is characterised in that include：
Search module, for obtaining the point of observation being input on electronic chart, presses default half path search centered on point of observation
Photographic head；
Acquisition module, for obtaining the parameter information of each photographic head for searching；
Screening module, for the parameter information according to each photographic head, screens the viewing area of coverage and current observation point
There is the photographic head of overlap；And for obtaining space coordinatess of the point of observation on the electronic chart, field of view angle, and
The far plane and hither plane of electronic chart, generates the viewing area of the point of observation；
Synthesis display module, for output display after the video signal of the photographic head for having overlap is synthesized in a video window
In mouthful.
6. the electronic chart panoramic video based on geographical position according to claim 5 synthesizes display system, and its feature exists
In the search module is additionally operable to：
The point centered on the point of observation, generates cylindrical space region with pre-set radius, detects in the cylindrical space area
Photographic head in domain.
7. the electronic chart panoramic video based on geographical position according to claim 6 synthesizes display system, and its feature exists
In the parameter information of the photographic head in the acquisition module includes the shooting azimuth of photographic head, the angle of visual field, direction of visual lines
And focal length, the screening module is additionally operable to the viewing area that the photographic head is generated according to the parameter information.
8. the electronic chart panoramic video based on geographical position according to any one of claim 6～7 synthesizes display system,
Characterized in that, the screening module is additionally operable to：
Set up the space coordinates with the point of observation as zero；
The viewing area of photographic head is transformed in the space coordinates, judge the viewing area of photographic head whether with the sight
There is overlap the viewing area examined a little；
It is determined that there is the photographic head of overlap.
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| CN103986905B (en) * | 2014-04-30 | 2017-02-15 | 武汉兆图科技有限公司 | Method for video space real-time roaming based on line characteristics in 3D environment |
| CN106034220A (en) * | 2015-03-16 | 2016-10-19 | 深圳市贝尔信智能系统有限公司 | Smart city mass monitoring method, device and system |
| CN107038949A (en) * | 2016-02-03 | 2017-08-11 | 幸福在线（北京）网络技术有限公司 | A kind of generation method of live-action map, method for pushing and its device |
| WO2017197971A1 (en) * | 2016-05-18 | 2017-11-23 | 彭波 | Automobile or mobile device 3d image acquisition and naked-eye 3d head-up display system and 3d image processing method |
| CN108377361B (en) * | 2016-11-14 | 2020-05-08 | 杭州海康威视数字技术股份有限公司 | Display control method and device for monitoring video |
| EP3552070B1 (en) | 2016-12-07 | 2022-04-27 | Hitachi Energy Switzerland AG | Submersible inspection vehicle with navigation and mapping capabilities |
| CN107872628B (en) * | 2017-09-29 | 2020-10-09 | 威创集团股份有限公司 | Signal display method and system based on GIS map |
| US20200370915A1 (en) * | 2018-03-23 | 2020-11-26 | Mitsubishi Electric Corporation | Travel assist system, travel assist method, and computer readable medium |
| CN111277791B (en) * | 2018-12-05 | 2022-02-08 | 杭州海康威视系统技术有限公司 | Case event monitoring method and system |
| CN114339142A (en) * | 2021-11-18 | 2022-04-12 | 樊商科技股份有限公司 | Intelligent park security panoramic monitoring system and method |
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| CN101277429B (en) * | 2007-03-27 | 2011-09-07 | 中国科学院自动化研究所 | Method and system for amalgamation process and display of multipath video information when monitoring |
| CN102938827B (en) * | 2012-11-29 | 2016-05-11 | 深圳英飞拓科技股份有限公司 | A kind of layering monitoring and commanding system and across the virtual tracking of camera |
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Address after: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |
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