KR20120061617A

KR20120061617A - Method for updating map of navigation system

Info

Publication number: KR20120061617A
Application number: KR1020100122975A
Authority: KR
Inventors: 김종욱
Original assignee: 한국전자통신연구원
Priority date: 2010-12-03
Filing date: 2010-12-03
Publication date: 2012-06-13

Abstract

The present invention relates to a method of updating a map of a navigation system. When the current driving position of a navigation system is not a road on a map, the present invention receives and analyzes an image photographed through an image device to determine the current driving position. It can be displayed in real time by modifying the new road, and by sending the map data modified by the new road to the map server, if there is a repetitive modification of the map data for the same location in the map server, the map data is updated in real time by updating the map data. In addition, the reliability of the map data can be improved.

Description

Map update method of navigation system {METHOD FOR UPDATING MAP OF NAVIGATION SYSTEM}

The present invention relates to a method of updating a map of a navigation system. More specifically, when a current driving position in a navigation system is not a road on a map, an image taken through an image device is received and analyzed to be recognized as a real road. The present invention relates to a map updating method of a navigation system for modifying a location on a new road to display in real time and updating map data.

As the number of moving objects such as automobiles continues to increase, traffic congestion is increasing, and the increasing speed of such moving objects is being made much faster than the speed of expanding infrastructures such as roads.

In this situation, the navigation system is attracting attention as one of the solutions to the traffic congestion. The navigation system receives a navigation message transmitted by a satellite for GPS and determines the current position of the moving object. In addition to matching and displaying on the screen, the driving route from the current position to the destination of the moving object is searched, and the user can drive the moving object along the searched driving path so that the given road network can be efficiently used.

The technology described above refers to the background of the technical field to which the present invention belongs, and does not mean the prior art.

If the map server of the navigation system changes terrain, features, new roads are opened, or roads are bypassed due to construction, the map server can check the area, modify the map data by modifying it, and notify the user that the map data has been modified. To make it work.

However, when the map data is not updated, when driving on a newly opened road or driving on a bypass road, the current location is displayed on the road instead of being displayed on the road.

In addition, when the map data is not modified, there is a problem in that the updated area is not reflected even if the map data is not modified, so that only the map data needs to be modified.

The present invention was created to solve the above problems, and determines whether the current driving position in the navigation device exists on the road and analyzes the image captured by the image device when the road does not exist on the road. It is an object of the present invention to provide a method of updating a map of a navigation system that displays a current driving position in real time and recognizes and updates a map data when the road is recognized as a real road.

According to an aspect of the present invention, there is provided a method of updating a map of a navigation system, the method comprising: receiving GPS data to determine a current location; Determining whether the current location is a road on a map; Determining whether the road is a map and receiving a front image through the image device when the road is not a road; Determining whether the road is a real road through the front image; And determining whether the road is a real road, and if the road is a real road, modifying a current location of the map data into a new road.

In the present invention, characterized in that it further comprises the step of transmitting the new road information modified to the new road to the map server.

In the present invention, the map server is characterized in that to update the map data by modifying the corresponding location to the road on the map when the new road information modified by the new road is duplicated for the same location.

As described above, when the current driving position of the navigation apparatus is not a road on the map, the present invention receives and analyzes an image photographed through the imaging apparatus, and if the current driving position is recognized as a real road, the current driving position may be corrected and displayed as a new road. Can be.

In addition, the present invention transmits the map data modified by the new road to the map server, if there is a repetitive modification of the map data for the same location in the map server by modifying the map data to provide the map data by updating the map data in real time Reliability can be improved.

1 is a block diagram showing a navigation system according to an embodiment of the present invention.
2 is a flowchart illustrating a map updating method of a navigation system according to an embodiment of the present invention.
3 is a diagram illustrating a front image photographed in a map updating method of a navigation system according to an exemplary embodiment of the present invention.
4 is a view showing a display state of the new road by the map updating method of the navigation system according to an embodiment of the present invention.

Hereinafter, an embodiment of a map updating method of a navigation system according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a block diagram showing a navigation system according to an embodiment of the present invention.

As shown in FIG. 1, the navigation system according to an exemplary embodiment of the present invention includes a GPS receiver 10, a map data storage unit 20, a memory unit 30, a controller 40, an image device 50, and a key. And an input unit 60, a display unit 70, and a communication module 80.

The GPS receiver 10 may receive a navigation message from a plurality of GPS satellites (not shown) located above the earth to determine a current position.

The map data storage unit 20 stores map data for searching a driving route of a moving object (not shown) and guiding the searched driving route.

The memory unit 30 stores the set value for the operation of the navigation system, the searched driving route, the road on the map, and the real road that do not coincide with each other and are inputted through the image device 50 and analyzed.

The imaging apparatus 50 is a camera for photographing the front of the moving object, which may be integrally embedded in the navigation system, or may be a black box installed in a vehicle or an independently installed camera.

The key input unit 60 includes a plurality of function keys to input and operate a setting value for operating the navigation system, and input a destination for setting a route.

The controller 40 detects the current position of the moving object detected by the GPS receiver 10 by receiving the navigation message, matches and displays the current position with the map data stored in the map data storage unit 20, as well as the key input unit 60. According to the command of the) based on the map data stored in the map data storage unit 20 to search the driving route for the destination and guides the driving route.

In addition, when the current location is not a road on the map of the map data, the controller 40 analyzes the image photographed by the image device 50, and when it is recognized as a road, corrects the current location as a new road and displays the new road on the map data. In addition, the new road information is stored in the memory unit 30, and the new road information is transmitted to the map server 90 through the communication module 80 so as to be updated and updated from the map server 90. Download the map data and update the map data of the map data storage unit 20.

The display unit 70 displays the operation state, the map data, and the driving route search result of the controller 40.

The communication module 80 provides a connection with the map server 90 via wired or wireless Internet to update the map data stored in the map data storage unit 20 and transmit new road information stored in the memory unit 30.

Therefore, the navigation system according to an embodiment of the present invention uses the imaging apparatus 50 when the current location received through the GPS receiver 10 is not a road on the map on the map data stored in the map data storage 20. The actual road is determined by analyzing the input image, and in the case of the real road, the current location is corrected and displayed as a new road, and the new road is stored in the memory unit 30 and then the new road when communicating with the map server 90. By requesting the correction and updating the map data by downloading the map data reflected in real time from the map server 90 can be provided as well as providing information about the road change in the field quickly.

2 is a flowchart illustrating a map updating method of a navigation system according to an embodiment of the present invention, and FIG. 3 is a view showing a front image photographed in the map updating method of a navigation system according to an embodiment of the present invention. 4 is a diagram illustrating a modified state of map data by a map updating method of a navigation system according to an embodiment of the present invention.

As shown in FIG. 2, in the map updating method of the navigation system, first, GPS data is received through the GPS receiver 10 to determine a current location (S10).

Then, it is determined whether the current location is a road on the map based on the map data stored in the map data storage unit 20 (S20).

In this case, when the current location is a road on the map, the current location is matched with the map data and displayed through the display unit 70.

However, if the current location is not a road on the map, the front image photographed in front of the image device 50 is received (S30).

The input image is analyzed to determine whether the road is real through line recognition (S40).

That is, in the case of a real road as shown in FIG. 3, even if the road is unpaved as shown in (a), the boundary between the road and the surrounding environment is clearly distinguished, and in the case of a paved road as shown in (b), As it is distinguished from the surrounding environment, the actual image is determined by applying the same method as the line recognition to the front image.

If it is determined that the road is a real road through the front image even if the current position is not a road on the map as shown in (a) of FIG. 4, the current position is modified to a new road as shown in (b) of FIG. The new road is displayed and the new road information is stored in the memory unit 30 (S50).

This process is operated when the current location is not a road on the map to determine the actual road based on the forward image input from the image device 50, modify the new road in the map data, display the current location and return to the road on the map. If you do, it will end.

Thereafter, the new road information is transmitted to the map server 90 through the communication module 80 (S60), and when the new road information is repeatedly input for the same location, the map server 90 transfers the corresponding location to the road on the map. Correct (S70).

The map data modified as roads on the map is provided to be updated to enable updating of the map data in real time (S80).

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

10: GPS receiver 20: map data storage unit
30: memory 40: control
50: image device 60: key input unit
70: display unit 80: communication module
90: map server

Claims

Determining current location by receiving GPS data;
Determining whether the current location is a road on a map;
Determining whether the road is a map and receiving a front image through an image device when the road is not a road;
Determining whether a road is real based on the front image; And
Determining whether the road is a real road, and if the road is a real road, modifying a current location of map data into a new road.