KR20060067033A - Apparatus and method for updating navigation information using scene analisys - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an apparatus and method for updating navigation information using image recognition.

2. The technical problem to be solved by the invention

According to the present invention, after obtaining a stereo image and corresponding position information and attitude information, the navigation information database is updated by using navigation information extracted from the stereo image through image recognition, and corresponding position information and attitude information. The purpose of the present invention is to provide an apparatus and method for updating a navigation information database using image recognition for updating existing navigation information efficiently and efficiently.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided a navigation information updating apparatus using image recognition, comprising: information obtaining means for obtaining a stereo image and corresponding position information and attitude information; Navigation information processing means for extracting navigation information from the stereo image obtained by the information acquisition means by using image recognition and updating the navigation information database by using the extracted navigation information, the acquired position information and attitude information; And a navigation information database for storing the updated navigation information.

4. Important uses of the invention

The present invention is used in the navigation information updating device.

Navigation map information, navigation route information, stereo image, location information, attitude information, update

Description

Apparatus and method for updating navigation information using scene analisys}             

1 is a configuration diagram of an embodiment of an apparatus for updating driving guide information using an image according to the present invention;

2 is a flowchart illustrating a method for updating navigation information using image recognition according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: information acquisition unit 12: navigation information processing unit

13: navigation information database

The present invention relates to an apparatus and method for updating a navigation information database using image recognition. More particularly, the navigation information extracted from the stereo image through image recognition after acquiring a stereo image and corresponding position information and position information is obtained. And an apparatus and method for updating a navigation information database using image recognition for updating the navigation information database using the acquired position information and attitude information.

In the present invention, the wireless communication terminal is a mobile communication terminal, a personal communication service (PCS) terminal, a personal digital assistant (PDA), a smart phone, a next generation mobile communication (IMT-2000) terminal, a wireless LAN terminal and the like through wireless communication, Refers to a portable wireless communication terminal capable of transmitting and receiving text and image data.

In addition, the navigation information in the present invention includes navigation map information, navigation route information and point of interest (POI) information. In this case, the navigation map information includes a road, a lane of a road, a center line of a road, a surrounding building, and the like. The navigation route information includes information such as a left turn, a one-way street, a U-turn, a speed limit of a vehicle, and the like, and POI information. Contains information on major facilities (public offices, large buildings, schools, etc.).

In general, a driving guidance service (navigation) providing system provides a driving guidance service to a vehicle driving by using a navigation map information database and a navigation route information database.

Currently, the navigation map information database is edited by each service company based on the map produced by the National Geographical Institute and used for providing various services.

However, since the National Geographic Institute updates the navigation map information database every three to five years, it cannot provide accurate services without updating the navigation map information database.

Therefore, a company that provides a service using a navigation map information database has a disadvantage in that it is necessary to update the existing navigation map information by collecting the changed information every time the navigation map information is changed.

In addition, companies that provide services using the navigation map information database need to collect the changed information every time the navigation map information is changed and update the existing navigation map information. .

The present invention has been proposed in order to solve the above problem, using a navigation information extracted from the stereo image and the acquired position information and attitude information through image recognition after obtaining a stereo image and corresponding position information and attitude information It is an object of the present invention to provide an apparatus and method for updating a navigation information database using image recognition for updating the navigation information database quickly and efficiently by updating the navigation information database.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a navigation information updating apparatus using image recognition, comprising: information acquiring means for acquiring a stereo image and corresponding position information and attitude information; Navigation information processing means for extracting navigation information from the stereo image obtained by the information acquisition means by using image recognition and updating the navigation information database by using the extracted navigation information, the acquired position information and attitude information; And a navigation information database for storing the updated navigation information.

On the other hand, the method of the present invention, in the navigation information updating method using image recognition, information acquisition step of obtaining a stereo image and corresponding position information and attitude information; A navigation information extraction step of extracting navigation information from the obtained stereo image; A navigation information updating step of comparing the extracted navigation information with existing navigation information stored in a navigation information database to update the changed navigation information; And a navigation information storage step of storing the updated navigation information.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of an apparatus for updating driving guide information using an image according to the present invention.

As illustrated in FIG. 1, the apparatus for updating driving guide information using an image according to the present invention includes an information obtaining unit 11 and an information obtaining unit 11 for obtaining a stereo image and corresponding position information and attitude information. Navigation information processing unit for extracting navigation information from the stereo image obtained by using the automatic image recognition / analysis technology, and then update the navigation information database by using the extracted navigation information, the acquired position information and attitude information (12) ), The navigation information database 13 for managing the updated navigation information and the corresponding position information and attitude information.

In one embodiment of the present invention may further include an output unit (not shown) for outputting the navigation information and the corresponding position information and attitude information.

Meanwhile, the information acquisition unit 11 may include a GPS receiver 111 for acquiring position information from a global positioning system (GPS) satellite, a stereo image collector 114 for collecting stereo images, and the stereo image collector 114. If the position information cannot be received through the GPS receiver 111, such as a posture information acquirer 112, a tunnel, etc., to obtain posture information (eg, direction, tilt, shaking, rotation, etc.) Synchronize the distance measurer 113, the GPS receiver 111, the attitude information obtainer 112 and the distance measurer 113 to obtain the current position information by measuring the moving distance of the stereo image and the corresponding It includes a controller 116 for controlling each of the components to obtain position information and attitude information.

Here, the distance measurement unIt (DMI) 113 is an additional element of the present invention.

In addition, the stereo image collector 114 includes two cameras for acquiring stereo images.

In addition, the attitude information obtainer 112 includes an Inertial Measurement System (INS). In this case, the attitude information obtained by the attitude information obtainer 112 includes a stereo image capturing direction (eg, east, west, north and south), tilt, rotation, and shake information of the stereo image collector 114.

Meanwhile, the navigation information processing unit 12 includes a navigation map information extractor 121 for extracting navigation map information from a stereo image obtained by the information acquisition unit 11, and a stereo image obtained by the information acquisition unit 11. The navigation path information extracting unit 122 for extracting the navigation path information and the POI information extracting unit 123 for extracting main facility information from the stereo image acquired by the information obtaining unit 11 are included.

Here, the navigation map information includes a road, a lane of a road, a center line of a road, a building, and the like, and the navigation route information includes information such as a left turn on a sign, a one-way street, a U-turn, a speed limit of a vehicle, and the POI information Include facility information.

In addition, the navigation information processing unit 12 may transmit the updated navigation information, corresponding location information and attitude information to the wireless communication terminal through the Internet / communication network.

In addition, the navigation information processing unit 12 updates the navigation information database by comparing the navigation information extracted using an automatic image recognition / analysis technique with a previously constructed navigation information database, thereby updating the navigation information database quickly and efficiently.

Meanwhile, the navigation information database 13 includes a navigation map information database 131 for storing navigation map information extracted by the navigation map information extractor 121 and a navigation route information extracted by the navigation route information extractor 122. Navigation route information database 132 for storing the POI information database 133 for storing the main facility information extracted by the POI information extraction unit 123.

2 is a flowchart illustrating a method for updating navigation information using image recognition according to the present invention.

First, a stereo image and corresponding position information and attitude information are obtained (201). That is, the stereo image is collected through the stereo image collector 114, the position information obtained by collecting (shooting) the stereo image is acquired through the position information receiver 111, and the stereo is obtained through the attitude information obtainer 112. The attitude information of the stereo image collector 114 which collected the image is acquired.

Thereafter, navigation information is extracted from the obtained stereo image (202). At this time, the navigation information includes navigation map information including roads, lanes of roads, center lines of roads, buildings, and the like, and navigation route information and POI information including signs indicating left turn, one-way traffic, U-turns, and speed limit of vehicles It includes.

Thereafter, the navigation information database 13 is updated using the extracted navigation information, the acquired position information, and attitude information (203). At this time, if the newly acquired navigation information does not exist in the navigation information database 13, it is added and it is not included in the newly acquired navigation information, but if navigation information exists in the navigation information database 13, navigation is performed. The corresponding navigation information of the information database 13 is deleted.

Thereafter, the updated navigation information is stored in the navigation information database (204).

Thereafter, a log file containing the update information may be generated.

Meanwhile, as an example, a method of extracting a lane of a road from a stereo image is first performed to improve image quality through a preprocessing process, and then to extract an area of straight line segments corresponding to a center line of a road and a driving lane.

The color information is further subdivided into yellow center lines, blue bus lanes, white lanes, and the like.

Thereafter, after extracting feature points such as corner points of the separated lines, the same point of the stereo image is automatically selected using an epipolar line to obtain three-dimensional spatial coordinates of the road lane. The three-dimensional spatial coordinates of the road lanes thus obtained are added to the existing navigation map information database as new road lane information.

As another example, a method of extracting a road sign from a stereo image may first improve image quality through a preprocessing process, and then firstly extract triangle and circular sign regions from the acquired image.

At this time, the sign region is extracted by using a random hough transform that extracts a figure existing in the image using a histogram defined in the parameter space. Here, the random Hough transform method can shorten the execution time by processing only a predetermined number of randomly selected points.

Afterwards, recognition of sign types and contents through the neural network pattern recognition process, which is a statistical method that can handle the color information and the feature points of the image, is a statistical method that can be safely handled even if the input is modified due to noise or loss. / Separate

Then, the location information (three-dimensional space coordinates) of the sign is extracted and recorded in the navigation route information database.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, after obtaining a stereo image and corresponding position information and attitude information, and updates the navigation information database by using the navigation information extracted from the stereo image and the acquired position information and attitude information through image recognition By doing so, there is an effect that can automatically and automatically update the existing navigation information in real time.

Claims (7)

In the navigation information updating apparatus using image recognition, Information obtaining means for obtaining a stereo image and corresponding position information and attitude information; Navigation information processing means for extracting navigation information from the stereo image obtained by the information acquisition means by using image recognition and updating the navigation information database by using the extracted navigation information, the acquired position information and attitude information; And Navigation information database for storing the updated navigation information Navigation information updating apparatus using image recognition comprising a. The method of claim 1, The navigation information processing means, And the navigation information database is updated in real time by comparing the extracted navigation information with previous navigation information stored in the navigation information database, thereby updating the navigation information database in real time. The method according to claim 1 or 2, The navigation information, Including navigation map information, navigation route information and POI information, The navigation map information includes a road, a lane of a road, a center line of a road, a building, and the navigation route information includes a sign indicating a left turn, a one-way street, a U-turn, a speed limit of a vehicle, and the POI information includes major facilities. Navigation information update apparatus using image recognition, characterized in that it comprises information. The method according to claim 1 or 2, The information obtaining means, Location information obtaining means for obtaining location information; Stereo image collecting means for collecting stereo images; Posture information acquiring means for acquiring posture information of the stereo image collecting means; Control means for synchronizing the position information acquiring means with the attitude information acquiring means and controlling the respective components to acquire a stereo image and corresponding position information and attitude information; Navigation information updating apparatus using image recognition comprising a. The method according to claim 1 or 2, The navigation information processing means, Navigation map information extracting means for extracting navigation map information from the stereo image obtained by the information obtaining means; Navigation path information extracting means for extracting navigation path information from the stereo image obtained by the information obtaining means; And POI information extraction means for extracting main facility information from the stereo image obtained by the information acquisition means Navigation information update apparatus using image recognition comprising a. The method of claim 4, wherein Secondary location information acquisition means for acquiring the current location information by measuring the moving distance from the initial starting point when the location information acquisition means cannot obtain the location information. Navigation information update apparatus using image recognition further comprising. In the navigation information updating method using image recognition, An information acquiring step of acquiring a stereo image and corresponding position information and attitude information; A navigation information extraction step of extracting navigation information from the obtained stereo image; A navigation information updating step of comparing the extracted navigation information with existing navigation information stored in a navigation information database to update the changed navigation information; And Navigation information storage step of storing the updated navigation information Navigation information update method using image recognition comprising a.

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