CN101937452B - Schematization storage and retrieval method for video electronic map - Google Patents
Schematization storage and retrieval method for video electronic map Download PDFInfo
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- CN101937452B CN101937452B CN2010102604864A CN201010260486A CN101937452B CN 101937452 B CN101937452 B CN 101937452B CN 2010102604864 A CN2010102604864 A CN 2010102604864A CN 201010260486 A CN201010260486 A CN 201010260486A CN 101937452 B CN101937452 B CN 101937452B
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Abstract
The invention relates to a schematization storage and retrieval method for a video electronic map, which comprises the following steps of: firstly, traversing each street of a city to perform data acquisition by using a special vehicle provided with a GPS receiver and a camera and acquiring information of each street and cross information of streets through the existing GIS system in an area to form a map, wherein nodes in the map represent all intersections and sides represent roads from one intersection to the other intersection; secondly, storing the map in a spatial database on a server; thirdly, manually cutting the acquired data and cutting all videos into videos corresponding to road sides, wherein spatial point sets contained in the road sides are read by a program through an automatic analysis video file; and finally, storing the videos and spatial points in the spatial database for retrieval. The method has the advantages of high video storage efficiency, no redundancy, and high synchronous accuracy of the videos and the map; and a user can conveniently, quickly and accurately retrieve any path with a synchronous video.
Description
Technical field
The invention belongs to field of computer technology.The method that particularly relates to a kind of video electronic map storage and retrieval relates in particular to a kind of schematization storage of video electronic map and the method for retrieval.
Background technology
Along with the fast development of multimedia technology and network map technology, Internet video ground diagram technology becomes an important directions of future network map development.Internet video ground diagram technology not only can provide conditional electronic map functions such as place name search and route guidance, but also can provide route synchronous outdoor scene video for route guidance, has greatly improved user's presence and has experienced with navigation.The present video map storage mode that general employing whole piece circuit is associated with whole section video in the storage of circuit and video generally comes across the application such as video navigation and displaying of many circuits.Yet the degree of modularity of this storage mode is low, generally can only be used in seldom and the comparatively fixing zonule occasion of circuit.For the catenet map, user's circuit query demand is arbitrarily.The user can optionally inquire the shortest path of any point-to-point transmission.If N place arranged in the map, the quantity of so this shortest path is 0 (N^2).If use conventional methods these paths and corresponding video all are stored in the infosystem, then will bring enormous pressure to memory capacity.
In the demand side that can satisfy the processing of catenet map support distribution and any circuit query manipulation, the storage mode of traditional video map has following defective:
One: different routes can pass through identical road segment segment, make the redundance of conventional store mode very high; Two: the storage granularity of conventional store mode is bigger, unreasonable, causes the degree of modularity low, is difficult to adapt to the expansion of map scale;
Three: route all is to be combined by the road segment segment between crossing and the crossing.For these reasons, people are badly in need of having a kind of method in order to solve the problem that the conventional video electronic chart exists.
Summary of the invention
Technical matters to be solved by this invention is to support distribution to handle the characteristics with circuit query operation arbitrarily to large-scale video electronic map, and a kind of schematization storage of the video electronic map that can satisfy the demand that large-scale video electronic map closes in multimedia memory capacity, downloading flow and sets of lines and the method for retrieval are provided.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of schematization storage of video electronic map and the method for retrieval, and it comprises following operation steps to this method at least;
Step 1: the vehicle through gps receiver and video camera are installed carries out data acquisition; Vehicle is through each the bar street in the area map; The extending video form makes each frame can comprise gps coordinate; Gps receiver and video camera carry out synchronous communication, and each gps coordinate that video camera detects the GPS receptacle in real time is recorded on the current frame of video;
Step 2: through the existing generalized information system in this zone, obtain each bar street, and the intersection information between street and the street, form a figure; The node of this figure is all intersections, and the limit is the road of crossing to the crossing; This figure is stored in the spatial database on the server;
Step 3: the operator checks the video in each bar street; Through sign identification crossings such as sound videos; And video carried out segmentation according to the crossing, a limit in each section video corresponding diagram is stored into the related information on the limit of the filename of each section video and its corresponding figure in the spatial database;
Step 4: browse each section video with Automatic Program, according to the gps coordinate that carries on each frame, form the space geometry object " multiple spot " on each bar limit of expression, and this geometric object is recorded in the database, and make it and scheme in corresponding frontier juncture join;
Step 5: corresponding search method comprises zatacode indexing and the retrieval of road name;
Step 6: zatacode indexing comprises according to the input point coordinate Calculation and goes out video and the road point corresponding frame of video corresponding with its nearest road point, roadside, road, this limit;
Step 7: road name retrieval comprises according to input road name and retrieves all roadsides, road and corresponding video on this road.
The measure of being taked also comprises: above-mentioned step 6 comprises the steps at least;
Step 61: retrieve the road point nearest with input point from spatial database;
Step 62: the major key that from the data structure of road point, takes out link name and roadside, road;
Step 63: according to the major key in roadside, road from spatial database path of dislodgement roadside, and the corresponding video file name in this roadside, road.Above-mentioned step 7 comprises the steps at least;
Step 71: retrieve all roadside, the road tabulations on this road according to input Lu Mingcong spatial database;
Step 72: traversal roadside, road tabulation, take out the video file name that joins with each road frontier juncture according to the major key in each roadside, bar road from spatial database, Query Result is formed list of videos.
The method of storage of the schematization of a kind of video electronic map of the present invention and retrieval, with the video electronic map abstract be a figure in the discrete mathematics.Each summit among the figure is the crossing, and the limit among the figure is a that part of road or be called the roadside between crossing and the crossing.Each bar limit all is made up of the spatial point of forming this edge, and the related video of one section this roadside, road real scene of reaction.Also stored corresponding spatial point in each frame of video in order to synchronous with map.In order to obtain the file layout of this figure; Arrangement of the present invention is equipped with each bar street in the special-purpose vehicle traversal city of gps receiver and video camera and carries out data acquisition; And dispose available manpower institute's image data is carried out the manual work cutting, all videos all are cut into and the corresponding video in roadside, road.The spatial point set that this roadside, road is comprised is read through automatic analysis video file by program.Finally, these video-frequency bands and spatial point deposit spatial database in, in order to user search.
The schematization storage of a kind of video electronic map of the present invention and the method for retrieval have following advantage:
1: route all can be made up of the limit among the figure arbitrarily, so the user can retrieve the route that has synchronization video arbitrarily.
2: video storage efficient is high, does not have redundancy, has solved the feasibility problem of memory capacity.
3: reduce the granularity of video, improved the modularity of storage mode, help implementing the distributed storage mode, also help the realization of following client-cache.
4: the synchronous degree of accuracy of video and map is high.
Description of drawings
Fig. 1 is the synoptic diagram of graphic storage mode in the embodiment of the invention;
Fig. 2 is the logical flow chart that the graphic storage mode among the step 1-4 forms in the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Extremely shown in Figure 2 like Fig. 1, the schematization storage of a kind of video electronic map of the present invention and the method for retrieval, this method comprises following operation steps at least;
Step 1: the vehicle through gps receiver and video camera are installed carries out data acquisition; Vehicle is through each the bar street in the area map; The extending video form makes each frame can comprise gps coordinate; Gps receiver and video camera carry out synchronous communication, and each gps coordinate that video camera detects the GPS receptacle in real time is recorded on the current frame of video;
Step 2: through the existing generalized information system in this zone, obtain each bar street, and the intersection information between street and the street, form a figure; The node of this figure is all intersections, and the limit is the road of crossing to the crossing; This figure is stored in the spatial database on the server;
Step 3: the operator checks the video in each bar street; Through sign identification crossings such as sound videos; And video carried out segmentation according to the crossing, a limit in each section video corresponding diagram is stored into the related information on the limit of the filename of each section video and its corresponding figure in the spatial database;
Step 4: browse each section video with Automatic Program, according to the gps coordinate that carries on each frame, form the space geometry object " multiple spot " on each bar limit of expression, and this geometric object is recorded in the database, and make it and scheme in corresponding frontier juncture join;
Step 5: corresponding search method comprises zatacode indexing and the retrieval of road name;
Step 6: zatacode indexing comprises according to the input point coordinate Calculation and goes out video and the road point corresponding frame of video corresponding with its nearest road point, roadside, road, this limit;
Step 7: road name retrieval comprises according to input road name and retrieves all roadsides, road and corresponding video on this road.
For optimizing technique scheme: above-mentioned step 6 comprises the steps at least;
Step 61: retrieve the road point nearest with input point from spatial database;
Step 62: the major key that from the data structure of road point, takes out link name and roadside, road;
Step 63: according to the major key in roadside, road from spatial database path of dislodgement roadside, and the corresponding video file name in this roadside, road.
At least comprise the steps for further optimizing above-mentioned step 7;
Step 71: retrieve all roadside, the road tabulations on this road according to input Lu Mingcong spatial database;
Step 72: traversal roadside, road tabulation, take out the video file name that joins with each road frontier juncture according to the major key in each roadside, bar road from spatial database, Query Result is formed list of videos.
The schematization storage of a kind of video electronic map of the present invention and the method for retrieval at first arrange vehicle through each the bar street in the area map, carry out data acquisition through GPS receptacle and the video camera that is installed on the vehicle.Gps receiver and video camera carry out synchronous communication, and the gps coordinate of each current location that video camera detects gps receiver in real time is recorded on the current frame of video.Then,, obtain each bar street through the existing generalized information system in this zone, and the intersection information between street and the street, a figure formed.The node of this figure is all intersections, and the limit is the road of crossing to the crossing.This figure is stored in the spatial database on the server.Then, the operator checks the video in each bar street, discerns the crossing through signs such as sound videos, and video is carried out segmentation according to the crossing.A limit in each section video corresponding diagram.The filename of each section video and the related information on the limit of the figure of its correspondence are stored in the spatial database.Then, browse each section video, according to the gps coordinate that carries on each frame, form the space geometry object " multiple spot " on each bar limit of expression, and this geometric object is recorded in the database with Automatic Program, and make it and scheme in corresponding frontier juncture join.At last, on the basis that the spatial database of above-mentioned video map is represented, realize zatacode indexing and road name search function.
Though the present invention is through illustrating and describe with reference to preferred embodiment,, those skilled in the art should understand, in the scope of claims, the various variation on the form of doing and the details, all drop in protection scope of the present invention.
Claims (3)
1. the method for the schematization of video electronic map storage and retrieval, it is characterized in that: this method comprises following operation steps at least;
Step 1: the vehicle through gps receiver and video camera are installed carries out data acquisition; Vehicle is through each the bar street in the area map; The extending video form makes each frame of video can comprise gps coordinate; Gps receiver and video camera carry out synchronous communication, and each gps coordinate that video camera detects gps receiver in real time is recorded on the current frame of video;
Step 2: through the existing generalized information system in this zone, obtain each bar street, and the intersection information between street and the street, form a figure; The node of this figure is all intersections, and the limit is the road of crossing to the crossing; This figure is stored in the spatial database on the server;
Step 3: the operator checks the video in each bar street; Through video labeling identification crossing; And video carried out segmentation according to the crossing, a limit in each section video corresponding diagram is stored into the related information on the limit of the filename of each section video and its corresponding figure in the spatial database;
Step 4: browse each section video automatically with program; Based on the gps coordinate that carries on each frame of video; Form the space geometry object " multiple spot " on each bar limit of expression, and with this space geometry object record in spatial database, and make it and scheme in corresponding frontier juncture join;
Step 5: corresponding search method comprises zatacode indexing and the retrieval of road name;
Step 6: zatacode indexing comprises according to the input point coordinate Calculation and goes out video and the road point corresponding frame of video corresponding with its nearest road point, roadside, road, this roadside, road;
Step 7: road name retrieval comprises according to input road name and retrieves all roadsides, road and corresponding video on this road.
2. the schematization storage of a kind of video electronic map according to claim 1 and the method for retrieval, it is characterized in that: described step 6 comprises the steps at least;
Step 61: retrieve the road point nearest with input point from spatial database;
Step 62: the major key that from the data structure of road point, takes out link name and roadside, road;
Step 63: according to the major key in roadside, road from spatial database path of dislodgement roadside, and the corresponding video file name in this roadside, road.
3. the schematization storage of a kind of video electronic map according to claim 1 and 2 and the method for retrieval, it is characterized in that: described step 7 comprises the steps at least;
Step 71: retrieve all roadside, the road tabulations on this road according to input Lu Mingcong spatial database;
Step 72: traversal roadside, road tabulation, take out the video file name that joins with each road frontier juncture according to the major key in each roadside, bar road from spatial database, Query Result is formed list of videos.
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| US8713032B2 (en) * | 2011-02-23 | 2014-04-29 | Google Inc. | Cross-platform cloud-based map creation |
| CN102955783B (en) * | 2011-08-19 | 2017-03-08 | 上海博泰悦臻电子设备制造有限公司 | The method and device of map data retrieval road, onboard system |
| CN103888739B (en) * | 2014-04-16 | 2018-01-30 | 深圳英飞拓科技股份有限公司 | The geographical location information collocation method and system of security device |
| CN104853155B (en) * | 2015-04-30 | 2018-10-26 | 武汉大学 | A kind of implementation method of collecting and distributing type video map |
| CN106777078B (en) * | 2016-12-13 | 2020-12-22 | 广东中星电子有限公司 | Video retrieval method and system based on information database |
| CN108847033B (en) * | 2018-08-22 | 2021-07-06 | 河南弋之众合信息科技有限公司 | Method and device for matching illegal road sections of vehicles and server |
| CN110929091A (en) * | 2019-11-18 | 2020-03-27 | 江苏燕宁工程科技集团有限公司 | Query method and system for road operation and maintenance video inspection |
| CN111623787A (en) * | 2020-03-16 | 2020-09-04 | 蘑菇车联信息科技有限公司 | Distributed data acquisition method and device based on Internet vehicle machine |
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| US20080307498A1 (en) * | 2006-12-27 | 2008-12-11 | Waterstone Environmental Hydrology & Engineering, Inc. | Access control for server-based geographic information system |
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| CN101082926A (en) * | 2007-07-03 | 2007-12-05 | 浙江大学 | Modeling approachused for trans-media digital city scenic area |
| CN101582078A (en) * | 2009-02-27 | 2009-11-18 | 泰瑞数创科技(北京)有限公司 | Tour route guiding method |
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