KR100968463B1 - Apparatus and Method for providing Road Information in Car Navigation System - Google Patents

Abstract

Disclosed are an apparatus and method for providing road information in a vehicle navigation system. In the vehicle navigation system, the method for providing road information includes receiving location information of a vehicle, extracting road shape polygons from a map area corresponding to the received location information, and determining a unit area including the extracted road shape polygons. And loading image data on the road pavement state of the road-shaped polygon corresponding to the determined unit area from a database, and providing the loaded image data.

Road information, GPS, texture mapping

Description

Road information providing apparatus and method in vehicle navigation system {Apparatus and Method for providing Road Information in Car Navigation System}

The present invention relates to an apparatus and method for providing road information in a vehicle navigation system, and more particularly, to an apparatus and method for providing road information in a vehicle navigation system for providing road information using texture mapping.

In general, a vehicle navigation system receives a location information from a Global Positioning Satellite (GPS) satellite using a Global Positioning Satellite Antenna, and maps the received location information data to map data recorded on a compact disc. It is a device that displays the current location on the screen by performing (Map matching).

In a vehicle navigation system, a road expressing method expresses a road shape by configuring figure information in a line or plane form, and additionally expresses attribute information of a road shape by using additional text information or image information. Such a road expression method is difficult to express the actual road lane, lane direction, rotation control information to the user.

Therefore, there is a need for a road expression method that can more effectively provide road information such as actual road lanes and lane directions to a user.

An object of the present invention is to provide a road information providing apparatus and method in a vehicle navigation system that enables a user to easily recognize road information by providing road information using texture mapping.

Road information providing apparatus in a vehicle navigation system according to an embodiment of the present invention for solving the above problems is a road shape for receiving the location information of the vehicle, and extracts the road shape polygon from the map area corresponding to the received location information A polygon extraction unit, a unit area determination unit for determining a unit area including the extracted road shape polygon, and a loading unit for loading image data on a road pavement state of the road shape polygon corresponding to the determined unit area from a database Include.

According to another aspect of the present invention, there is provided a road information providing method in a vehicle navigation system, the method comprising: receiving location information of a vehicle and extracting a road shape polygon from a map area corresponding to the received location information; Determining a unit area including the extracted road shape polygon, loading image data of a road pavement state of the road shape polygon corresponding to the determined unit area from a database, and loading the loaded image data. Providing a step.

An apparatus and method for providing road information in a vehicle navigation system according to an embodiment of the present invention provides a road information by using texture mapping, thereby enabling a user to easily recognize and substantially use road information.

Hereinafter, an apparatus and method for providing road information in a vehicle navigation system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a vehicle navigation system and a road information providing apparatus according to an embodiment of the present invention. 2 is a diagram for describing a configuration of a unit area including a road shape polygon in the road information providing device.

Referring to FIG. 1, the vehicle navigation system 101 includes a location receiver 103, a map storage 105, a display 107, and a controller 109.

The vehicle navigation system 101 is a device that receives location information and loads and displays map data corresponding to the received location information from a memory.

The location receiver 103 may be a global positioning system (GPS) receiver capable of receiving current location information.

The map storage unit 105 stores map data in advance. In addition, the map storage unit 105 may further store road information provided from the road information providing device 111. Here, the road information may be image data of a road pavement state corresponding to the road shape polygon. The image data of the pavement state may be image data of a two-dimensional or three-dimensional shape, and the lane, the turn indication for each lane (left turn lane, bus-only lane, etc.), the pavement state of the road, the type of road, the regulatory information (rotation) Prohibition, prohibition of entry, etc.), and the presence or absence of one-way traffic information.

Accordingly, the image data of the road pavement state may be variously configured according to the attribute information.

The display unit 107 loads map data corresponding to the current location information from the map storage unit 105 and displays the map data on the screen. Also, the display unit 107 may load road information from the map storage unit 105 and display the map information together with the map data. Here, the display unit 107 may directly receive road information from the road information providing device 111.

The display unit 107 may texture map the road information on the road shape surface of the map data and display the road information.

The controller 109 controls the control signals and timings of the location receiver 103, the map storage 105, and the display 107. In addition, the controller 109 controls the control signal and data with the road information providing apparatus 111.

The road information providing apparatus 111 for providing road information to the vehicle navigation system 101 configures road information of road-shaped polygons for each section, and provides road information corresponding to current position information of the vehicle navigation system 101. .

The road information providing device 111 includes a road information configuration unit 113, a database unit 115, and a road information detection unit 117. Here, the road information providing device 111 may be located inside the vehicle navigation system 101, and the location of the road information providing device is not limited thereto. For example, the road information providing device 111 may be located outside the vehicle navigation system and provide road information.

The road information construction unit 113 configures image data of a road pavement state corresponding to the road-shaped polygon for each section. The image data of the pavement state includes the lanes, lane markings for each lane (left turn lanes, bus lanes, etc.), pavement status of roads, types of roads, regulatory information (no turn, no entry), and presence of one-way traffic. It may be configured to include attribute information.

In detail, the road information configuration unit 113 may include a road shape polygon determination unit (not shown) for determining road shape polygons for each section along a road link, and a unit area configuration unit constituting a unit area including a road shape polygon ( And an image information generation unit (not shown) for generating image data of a road pavement state of the road-shaped polygon corresponding to the unit area. Here, the link of the road included in the unit area may be defined by node data indicating the visual point and the end point of the road section.

Referring to FIG. 2, the road shape polygon determination unit generates a first road shape polygon 205a located along link 1 203a connecting node 1 201a and node 2 201b, and node 2 20b. A second road-shaped polygon 205a is formed along link 2 203b connecting node 3 (201c) and node 3 (201c).

The unit area configuration unit generates a first unit area 207a including the first road shape polygon 205a and generates a second unit area 207b including the second road shape polygon 205b.

Here, the first unit area 207a and the second unit area 207b may be configured as a minimum area including the first road shape polygon 205a and the second road shape polygon 205b, respectively, and have different sizes. Can be configured. In addition, the first unit area 207a may be a rectangular area including the minimum X and Y coordinate values and the maximum X and Y coordinate values constituting the first road shape polygon 205a, and the second unit area 207b. May be a rectangular area including a minimum X and Y coordinate value and a maximum X and Y coordinate value constituting the second road shape polygon 205b.

The image information generation unit generates an image of the road pavement state of the road shape polygon for each unit area. In this case, the image information generation unit may receive information such as field surveys, aerial photographs, and satellite photographs of the road-shaped polygons, and generate image data of the road pavement state of the road-shaped polygons based on the provided information.

In this case, the image information generation unit may variously configure the image data of the road pavement state according to the attribute information indicating the attribute of the road shape polygon.

For example, as illustrated in FIG. 3, the image information generator may generate image data of a road pavement state including attribute information such as one-way traffic 301 and 303 and U-turn 305 displayed for each lane.

Here, the image information generation unit may assign specific pixel values to the lanes 307, 309, and 311 to the image data corresponding to the lane information among the image data in the pavement state. In this case, the image information generator may assign specific pixel values distinguished for each of the lanes 307, 309, and 311 according to the attribute information, and may assign the same specific pixel values to the same lane with the attribute information. That is, the image information generation unit may assign the same specific pixel value to the image data of the third lane 307 including the first one-way 301 and the second lane 309 including the second one-way 303. Can be.

In addition, the image information generation unit may assign specific pixel values distinguished from the lanes to the attribute information displayed in the lanes, that is, the one-way passages 301 and 303 and the U-turn 305.

In addition, as illustrated in FIG. 4, the image information generation unit may assign a minimum pixel value to the image data of the background portion 401 except for the road shape polygon 403 in the unit area 207a. This is because the image data of the pavement state is configured for each unit area by providing a minimum pixel value to the image data of the background part 401 and transparently, but may display only the road shape polygon 403 when displaying an image. .

The image information generation unit stores the image data of the pavement state corresponding to the road shape polygon in the database 115 as shown in FIG. 5 in association with the unit area including the road shape polygon. In this case, the image information generation unit may store image data by distinguishing each unit area by using map coordinates of a diagonal point constituting each unit area or a unique ID assigned to each unit area. Also, the image information generator may store image data for each unit area by using unique links and nodes in each unit area.

Subsequently, referring to FIG. 1, the road information detection unit 117 extracts a road shape polygon from a map area corresponding to the received location information, and image data of road pavement state corresponding to the extracted road shape polygon and road property information. Load road information, including. Here, the road information detector 117 may receive location information from the vehicle navigation system 101.

In detail, the road information detector 117 may include a road shape polygon extraction unit (not shown) for extracting road shape polygons from a map area corresponding to the received position, and a unit area for determining a unit area including the extracted road shape polygons. A determining unit (not shown) and a loading unit (not shown) for loading image data of a road pavement state corresponding to the unit area from the database 115 are included.

The road shape polygon extracting unit and the unit area determining unit extract the road shape polygon in the same manner as the road shape polygon determination and the unit area configuration method in the road information configuration unit 113, and extracts the unit area including the road shape polygon. Decide

The loading unit may retrieve image data of a road pavement state for a road shape polygon corresponding to the unit area from the database 115 using the map coordinates, the unique ID, the link or the node of the unit area, and load the same. . The loading unit may provide the loaded road information to the vehicle navigation system 101.

In this case, the loading unit may provide the vehicle navigation system 101 by processing the image data of the road pavement state. For example, the loading unit may assign the pixel value of the road pavement state to the image data that does not correspond to the effective lane information among the image data of the road pavement state. The effective lane information refers to image data of a lane corresponding to a current driving direction and a path section of the vehicle.

Here, since the loaded image data of the road pavement state is assigned a specific pixel value for each lane according to the attribute information, the loading unit assigns the pixel value of the road pavement state to the image data that does not correspond to the effective lane information. Specific pixel values may be assigned only to image data corresponding to the effective lane information.

Accordingly, the loading unit may effectively transmit lane position and attribute information on the road while driving by providing image data of a road pavement state in which a specific pixel value is assigned only to the effective lane information.

However, when the loaded image data of the road pavement state is not assigned a specific pixel value for each lane according to the attribute information, the loading unit assigns a specific pixel value to the image data corresponding to the effective lane information among the image data of the road pavement state. The pixel value of the road pavement state can be given to image data which does not correspond to the effective lane information.

In the above-described road information providing apparatus 111, the database 115 is referred to as being located inside the road information providing apparatus 111, but is not limited thereto and may exist outside the road information providing apparatus 111. .

In this case, the road information providing apparatus 111 may store or load road information through the database 115 and the wireless Internet or the Internet network.

The road information providing apparatus in the vehicle navigation system according to an embodiment of the present invention configures road information of road-shaped polygons for each section, and may provide texture mapping of road information to road shape surfaces in the map data by providing the road information. In addition, the road information providing apparatus has an effect of allowing the user to easily recognize the road information on the map data by providing the image data of the road pavement state of the two-dimensional or three-dimensional shape.

6 is a flowchart illustrating a road information configuration method in a vehicle navigation system according to an embodiment of the present invention.

Referring to FIG. 6, first, a road information providing apparatus in a vehicle navigation system determines a road shape polygon (S601).

The road information providing apparatus determines a road shape polygon for each section along a road link, and configures a unit area including the road shape polygon (S603). The unit area may be configured as a rectangular area having a minimum area including road-shaped polygons, and may have different sizes.

Subsequently, the road information providing apparatus generates image data for a road shape polygon corresponding to the unit area (S605). Here, the image data for the road shape polygon includes attribute information of the road shape polygon. At this time, the attribute information includes a lane, lane markings for each lane (left turn lanes, bus lanes, etc.), pavement status, types of roads, regulatory information (prohibitions for turning, no entry, etc.), and the presence or absence of one-way traffic. .

Accordingly, the road information providing apparatus may form image data of various road pavement states according to attribute information of the road shape polygon.

Subsequently, the apparatus for providing road information stores image data of the road shape polygon in a database in association with the unit area (S607).

That is, the road information providing apparatus stores image data of the road shape polygon for each unit area by using map coordinates, unique IDs, links, or nodes of the unit area.

7 is a flowchart illustrating a road information providing method in a vehicle navigation system according to an embodiment of the present invention.

Referring to FIG. 7, first, a road information providing apparatus in a vehicle navigation system receives current location information (S701).

The road information providing apparatus determines map area information to be displayed on the screen based on the received location information. For example, the road information providing apparatus determines the map area information 803 based on the location information 801 as shown in FIG. 8.

Subsequently, the road information providing apparatus detects the unit areas 805 and 807 including the road shape polygon (S703).

Here, the unit area may be a rectangular area including the minimum X and Y coordinate values and the maximum X and Y coordinate values constituting the road shape polygon.

Subsequently, the road information providing apparatus loads image data for a road shape polygon corresponding to the unit area from the database (S705).

The road information providing apparatus may search for and load image data of road pavement states for road-shaped polygons corresponding to the unit area from a database using map coordinates, unique IDs, links, or nodes of the unit area. .

Subsequently, the road information providing apparatus may reset the pixel value of the loaded image data according to the valid lane information.

In detail, the apparatus for providing road information may assign a specific pixel value to image data corresponding to the effective lane information among the image data in the road pavement state (S707 and S709), and the road pavement to the image data not corresponding to the effective lane information. The pixel value of the state can be provided (S711). The effective lane information refers to image data of a lane corresponding to a driving direction and a route section of the current vehicle.

Thereafter, the road information providing apparatus may provide road information including the image data of the reset road shape polygon to the vehicle navigation system.

Subsequently, the vehicle navigation system may receive road information and display road information on the road shape surface of the map data (S713).

The vehicle navigation system may texture display and display road information provided along with map data.

Road information providing method in a vehicle navigation system according to an embodiment of the present invention, unlike the road information providing method for providing the attribute information of the road by using a separate text or image information, the image to support the texture mapping on the road surface By providing road information in the data, it helps the user quickly recognize the road information. Therefore, it is possible to actually use the road information when driving.

Embodiments according to the present invention can be implemented in the form of program instructions that can be executed by various computer means can be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

1 is a block diagram showing the configuration of a vehicle navigation system and a road information providing apparatus according to an embodiment of the present invention.

2 is a diagram for describing a configuration of a unit area including a road shape polygon in the road information providing device.

3, 4, and 8 illustrate road information provided by a road information providing apparatus.

5 is a diagram illustrating information stored in a database of a road information providing apparatus.

6 is a flowchart illustrating a road information configuration method in a vehicle navigation system according to an embodiment of the present invention.

7 is a flowchart illustrating a road information providing method in a vehicle navigation system according to an embodiment of the present invention.

Claims (14)

Determining a road shape polygon for each section along a road link; Constructing a unit area including the road shape polygon; Generating image data of a road pavement state of the road-shaped polygon corresponding to the unit area; And Storing the image data in a database in association with the unit area Road information configuration method comprising a. The method of claim 1, The image data is configured to include attribute information indicating the attribute of the road-shaped polygon, The attribute information may include at least one of lanes, lane markings for each lane, road pavement, road types, regulatory information, and one-way traffic. The method of claim 1, And the image data is configured for each unit area. The method of claim 1, And the unit area is a rectangular area including a minimum X and Y coordinate value and a maximum X and Y coordinate value constituting the road shape polygon. Receiving location information of the vehicle and extracting a road shape polygon from a map area corresponding to the received location information; Determining a unit area including the extracted road shape polygon; And Loading image data of a road pavement state of the road-shaped polygon corresponding to the determined unit area from a database, and providing the loaded image data Road information providing method comprising a. The method of claim 5, Assigning a specific pixel value to image data of an effective lane corresponding to a traveling direction and a path section of the vehicle among the loaded image data; And Assigning a pixel value of a road pavement state to image data that does not correspond to the effective lane among the loaded image data; Road information providing method further comprising. The method of claim 5, The database is a road information providing method characterized in that the image data for the road pavement state of the road-shaped polygon is stored for each unit area. A location receiving unit for receiving location information of the vehicle; A road information detection unit which extracts a road shape polygon from a map area corresponding to the location information and loads image data on a road pavement state of the extracted road shape polygon; And A display unit configured to display a texture mapping process of the loaded image data on a road shape surface of map data; Vehicle navigation system comprising a. The method of claim 8, A road information construction unit constituting image data on a road pavement state of the road-shaped polygon; And A database unit for storing the constructed image data; Vehicle navigation system further comprising. A road shape polygon determination unit that determines road shape polygons for each section along a road link; A unit region constitution unit constituting a unit region including the road shape polygon; An image information generation unit for generating image data corresponding to a road pavement state of the road-shaped polygon corresponding to the unit area; And Database unit for storing the image data in association with the unit area Road information configuration device comprising a. The method of claim 10, And the image information generation unit generates the image data for each unit area. The method of claim 10, And the image information generator generates the image data to which a specific pixel value is assigned for each lane. A road shape polygon extraction unit configured to receive location information of the vehicle and extract road shape polygons from a map area corresponding to the received location information; A unit area determiner configured to determine a unit area including the extracted road shape polygons; And A loading unit for loading image data of a road pavement state of the road shape polygon corresponding to the determined unit area from a database; Road information providing apparatus comprising a. The method of claim 13, And the loading unit provides a pixel value of a road pavement state to image data excluding image data of an effective lane corresponding to a traveling direction and a path section of the loaded image data.

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