KR100620668B1 - Method for implementing Video GIS system of car navigation system having GPS receiver - Google Patents

Abstract

The present invention relates to a method for constructing a video geographic information system of a vehicle navigation system equipped with a GPS receiver, comprising: a user authentication step (S1) based on encryption / decryption; Receiving position and speed information of the vehicle from the GPS receiver (S2); Displaying map information including location information of the vehicle (S3); When a specific location coordinate is clicked on the map (S4), the image, video, and vector data stored in a tree structure connected to the specific location coordinate are searched (S5) for the video image and the video image linked to the specific location coordinate. Outputting the linking information including the geographical information (S6); And extracting spatial geographic object information from the video data to provide navigation (S7). Therefore, by using the interactive map concept on the main position coordinates on the map of the geographic information system, the information can be displayed in image and video in any format from the digital map data, thereby increasing the realism and reality.

GPS receiver, navigation, video, geographic information system

Description

Method for implementing Video GIS system of car navigation system having GPS receiver

1A is a configuration diagram of a geographic information system of a vehicle navigation system equipped with a conventional GPS receiver.

1b is a geographic information system provided by a client / server type geographic information server utilizing wireless internet in a vehicle navigation system equipped with a conventional GPS receiver.

2 is a flowchart illustrating a method of configuring a video geographic information system of a vehicle navigation system having a GPS receiver according to the present invention.

3 is an embodiment of a video GIS screen according to an embodiment of the present invention

* Explanation of symbols on the main parts of the drawing **

10: GPS antenna 20: GPS receiver

30: microcomputer 40: LCD display

50: audio output unit 60: storage device

GPS: Global Positioning System

The present invention relates to a video geographic information system (GIS) of a vehicle navigation system. In particular, in a vehicle navigation system equipped with a GPS receiver, the geographic information is not simply displayed in a two-dimensional or three-dimensional digital map. The present invention relates to a video geographic information system of a vehicle navigation system having a GPS receiver showing actual video image information in coordinates of geographic information.

In general, a geographic information system is linked to a GPS receiver and provides location tracking and retrieval, location based services (LBS) and map services as part of an intelligent traffic information system (ITS).

In particular, a car navigation system using a GPS (Global Positioning System) receiver is a vehicle navigation system that accurately detects the position, speed, and time of a vehicle by receiving radio waves emitted from three or four GPS satellites.

1A is a configuration diagram of a geographic information system of a vehicle navigation system equipped with a GPS receiver, and FIG. 1B is a geographic information system provided by a client / server type geographic information server utilizing wireless Internet in a vehicle navigation system equipped with a GPS receiver. Represents a system.

Referring to FIG. 1A, a vehicle navigation system using a conventional GPS receiver includes a GPS receiver 20 which receives position information and speed data of a vehicle through a GPS reception antenna 10 from three to four GPS satellites 9. (50) A storage device for providing map information from a 2D or 3D map database of a Geographic Information System (GIS), which stores map data and management data in a hierarchical data format on a CD-ROM player, etc. A map that the driver wants to see by reading the map information provided from the storage device 50 and the vehicle location information signal applied from the GPS receiver 20, calculating the current position of the vehicle by the coordinates on the map provided by the map database. To the microcomputer 30 and the microcomputer 30 to control the reduction and enlarged map information and the voice output operation of the map. A display unit 40 for displaying a map, location information and additional information provided on the LCD display panel, and an audio output unit for receiving an audio signal for a search result from the microcomputer 30 and outputting a guide voice of a driving route. It consists of 60.

Accordingly, the vehicle navigation system is adapted to control the vehicle from the storage device 50 such as the GPS receiver 20, the vehicle speed sensor and the CD-ROM player storing the map information when the driver drives the vehicle. The car navigation information is provided by calculating the current position, the direction of travel, the speed of the vehicle, and the road information.

Referring to Figure 1b, after receiving its location information from the GPS satellite 100, and communicates with the vehicle navigation and geographic information providing server 500 through the wireless Internet network (300). At this time, the wireless Internet network 300 is generally a wireless Internet base station 310 for communicating with the terminal to use the wireless Internet, and the Internet gateway for performing the connection between the Internet 330 and the wireless Internet base station 310 320. When a wireless web browser is installed in a vehicle 200 equipped with a car navigation system (CNS), it is connected to a web server 400 through the wireless internet network 300, and a vehicle navigation and geographic information providing server through the web ( In connection with 500, it provides geographic information service.

However, in the conventional geographic information system or the desktop type geographic information system of the vehicle navigation system, only the two-dimensional or three-dimensional map information is provided and the video information for the specific location of the map information does not provide a problem of reality dropping.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is not to merely display a map in two or three dimensional form in a vehicle navigation system equipped with a GPS receiver, but in a main position on a map. GPS, which provides a video geographic information system (Video GIS) that displays real image and video image information to support linked output / retrieval from digital map data to arbitrary format image and video using interactive map concept for coordinates of geographic information. The present invention provides a method for constructing a video geographic information system of a vehicle navigation system having a receiver.

In order to achieve the above object of the present invention, the present invention provides a geographic information system, comprising: a user authentication step (S1) based on encryption / decryption; Receiving position and speed information of the vehicle from the GPS receiver (S2); Displaying map information including location information of the vehicle (S3); When a specific location coordinate is clicked on the map (S4), the image, video, and vector data stored in a tree structure connected to the specific location coordinate are searched (S5) for the video image and the video image linked to the specific location coordinate. Outputting the linking information including the geographical information (S6); And extracting spatial geographic object information from the video data (S7) to provide navigation, and the method of configuring a video geographic information system of a vehicle navigation system having a GPS receiver.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail the configuration and operation. This embodiment is not intended to limit the scope of the invention, but is presented by way of example only.

2 is a flowchart illustrating a method of configuring a video geographic information system of a vehicle navigation system having a GPS receiver according to the present invention.

The present invention is applicable to the video geographic information system of the vehicle navigation system equipped with the GPS receiver and the video geographic information system for the desktop. The interactive map concept is used for the map of the navigation system. It supports linked search and output to video such as, JPEG image, MPEG, AVI, ASF.

As shown in FIG. 2, the method for constructing a video geographic information system of a vehicle navigation system equipped with a GPS receiver according to the present invention is performed after a user authentication based on a specific encryption / decryption such as an RSA or a DES algorithm (step S1). After driving the video geographic information system of the navigation system and the desktop video geographic information system to receive the vehicle position and speed information from the GPS receiver via the GPS antenna for information emitted from three to four satellites (step S2), Two-dimensional or three-dimensional map information including the location information of the vehicle is displayed (step S3).

When a specific location coordinate is clicked on the map (step S4), a tree structure for storing multimedia data to display video information associated with the specific location coordinate using a technique such as B-tree, B * tree, B + tree, etc. The stored image, video, and vector data are retrieved (step S5), and the video image linked with the specific position coordinate and its associated information linked with the specific position coordinate are output (step S6).

Spatial geographic object information is extracted from video data in any format, such as MPEG, AVI, ASF, or ASX, associated with the specific location coordinates to provide navigation according to the map information (step S7).

Linkage between 2D or 3D digital maps and video data refers to the spatial geographic objects on digital maps and spatial geographic objects appearing in video data in bidirection, so that digital maps can be searched / managed through digital maps and digital maps through video data. Can search / manage objects.

In order to bidirectionally link the digital map and the video data, it is necessary to efficiently model the cross-reference information acquired from the digital map and the video data. In order to improve performance in data linkage, it is necessary to efficiently index digital map data, video data, and linkage information.

For linkage analysis of digital maps and video data, multimedia files such as video data stored in a tree structure to display the video information corresponding to specific location coordinates on the actual map in advance. Build a system and store the video data, images and files in a specific directory.

Linking information between a specific digital map and video data Through the video geographic information system, the linking information can be connected to geographic information system such as Mobile GIS, Web GIS and other LBS (Location Based Services). It can be used where information is provided and where cross-analysis of digital maps and video data is required.

The digital map data can be output, edited, and managed in 2D (2D) or 3D (3D) format, and various property information of spatial geographic object can be output / edited, and image, video / Vector data can be output / edited.

In addition, as part of the linkage information between the map data and the video data, the position and shape of the spatial geographic object are represented in a vector form on the image / video data, and edited and managed. By providing a reference of video data through a digital map or a reference of a digital map through video data, spatial analysis operations based on the video data are supported.

The technologies required for constructing a video geographic information system (Video GIS) according to the present invention are provided for a technique for acquiring and positioning video data, a technique for image processing and spatial geographic object extraction, a technique for establishing linkage information, and the like. do.

The video acquisition and positioning technology refers to acquiring video data and measuring a photographing position of the video data. Most systems for acquiring video data include a digital CCD camera, a stereo camera system, a global positioning system (GPS), In addition, it uses a mobile mapping system equipped with a car navigation system.

The image processing and spatial geographic object extraction technology refers to the acquired video data, the video acquisition position and camera information at the time of acquisition, and analyzes the video data to display spatial geographic objects, such as roads, buildings, Recognizing a traffic light and the like and extracting the position in the video and the coordinates on the ground. In order to recognize spatial geographic objects on video data, filtering and region extraction image processing techniques are used, and image pattern recognition is used.

The technique of constructing linkage information refers to constructing linkage information between spatial geographic data of a digital map and spatial geographic objects on video data obtained through image processing. This includes not only the linkage between the spatial geographic data on the digital map and the spatial geographic object on the video data, but also the linking of other types of data, for example, other types of images and other data attributes such as a home page.

As shown in FIG. 3, an implementation screen of a Video GIS according to an embodiment of the present invention may be associated with video data, video acquisition information, digital map data, and the like according to construction of video data linkage information for a specific position coordinate. Modeling takes into account all types of information to be linked, such as data, and construction of index files for spatial geographic objects on video data.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below. Or it may be modified.

As described above, the video GIS system of a vehicle navigation system with a GPS receiver according to the present invention is simply a two-dimensional (2D) or three-dimensional (3D) of geographical information in a vehicle navigation system or a general geographic information system with a GPS receiver. In addition to showing only a map in a form, the interactive map concept is used to map the main location coordinates of a geographic information system. It supports the output and increases the realism and realism of the geographic information system by showing the actual image and video image information.

In addition, video geographic information system can be used for desktop client / server GIS system, Web GIS, Mobile GIS, Vehicle Navigation System (CNS), PDA-based dedicated navigation system, and road of ITS system for managing roads, railways, and tourist attractions. Information Video GIS can be applied, accurate location information such as road facility management and real image are needed, and in addition to GIS field and location information requiring realistic search and management functions, LBS field needs actual image from the location. It is possible to provide real-time traffic information by using as image information of the site linked with accurate location information. In addition, it can be easily extended to a system that comprehensively connects 2D maps, satellite images, 3D graphics, and real images, and can be utilized as a tool for collecting information on spatial geographic objects and building a database and a browsing tool.

Claims (2)

In the geographic information system, User authentication step S1 based on encryption / decryption; Receiving position and speed information of the vehicle from the GPS receiver (S2); Displaying map information including location information of the vehicle (S3); When a specific location coordinate is clicked on the map (S4), the image, video, and vector data stored in a tree structure connected to the specific location coordinate are searched (S5) for the video image and the video image linked to the specific location coordinate. Outputting the linking information including the geographical information (S6); And And (S7) extracting spatial geographic object information from the video data to provide navigation. The method of claim 1, Link with the specific location coordinates from two-dimensional or three-dimensional numerical map data indexed into a tree structure for storing multimedia to display video information using the interactive map concept to the specific location coordinates of the major part of the map of the geographic information system. A method of constructing a video geographic information system of a vehicle navigation system with a GPS receiver, characterized in that it provides a linked output to an image or video of an arbitrary format.

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