KR101061545B1 - Method and apparatus for displaying contrast on objects in 3D map - Google Patents

Abstract

The present invention relates to a method and apparatus for displaying contrast on an object in a 3D map. More specifically, in displaying contrast on an object in a 3D map, the contrast of the object is displayed differently according to the position of light. A method and apparatus for displaying contrast on an object in a three-dimensional map to improve it.

A method and apparatus for displaying contrast on an object in a 3D map of the present invention may include a first step of extracting an object for applying contrast from map data and grasping a current time; Determining a position of light according to the current time, dividing a surface of the object into one or more regions, and extracting vertices of a first region; A third step of setting a vertex close to the light among the vertices of the first area as a vertex and setting a vertex opposite to the light as a b vertex; A fourth step of applying a color a to the a vertex and a color b to the b vertex; A fifth step of setting and applying a color of the first region by using an average value or a representative value of the first color and the second color; Technical features include a sixth step of applying color to one or more areas of the object and displaying the color.

Gradient, contrast, 3d

Description

Apparatus and Method for displaying object in three dimesion map}

The present invention relates to a method and apparatus for displaying contrast on an object in a 3D map. More specifically, in displaying contrast on an object in a 3D map, the contrast of the object is displayed differently according to the position of light. A method and apparatus for displaying contrast on an object in a three-dimensional map to improve it.

The vehicle terminal uses a GPS (Global Positioning System) to track the location of a vehicle in operation on a road map, and provides various other useful information according to a gas station, a public office, etc., to a destination.

The vehicle terminal generally provides map data using two-dimensional images, and has recently been developed to provide map data using three-dimensional images.

Because three-dimensional images provide information similar to driving on a real road, more realistic displays are needed than two-dimensional images. The height of the road, the intersection, etc. are realistically displayed on the 3D image, and the surrounding objects are also expressed as the 3D image besides the road.

In expressing contrast to things, it is disclosed as an example of the Republic of Korea Patent Publication No. 896137 (April 28, 2009).

The document reads information about the contrast target and applies the color to the contrast target, and processes the contrast for the contrast target according to the applied color, the color for the upper end of the contrast target and the bottom of the contrast target By applying different colors, the color between the top and bottom is processed using the gradient technique.

The document is divided into upper and lower parts to apply different colors, regardless of the location, shape, and time of the building.

The present invention devised to solve the problems of the prior art as described above for the three-dimensional image by expressing the place where the amount of light is relatively high around the light, and the place where the amount of light is relatively dark It is an object of the present invention to provide a method and apparatus for displaying contrast on an object in a 3D map to increase visibility.

The above object of the present invention is to extract the object for applying the contrast from the map data, the first step of grasping the current time; Determining a position of light according to the current time, dividing a surface of the object into one or more regions, and extracting vertices of a first region; A third step of setting a vertex close to the light among the vertices of the first area as a vertex and setting a vertex opposite to the light as a b vertex; A fourth step of applying a color a to the a vertex and a color b to the b vertex; A fifth step of setting and applying a color of the first region by using an average value or a representative value of the first color and the second color; And a sixth step of applying color to one or more areas of the object and displaying the same.

In addition, another object of the present invention is a storage unit for storing the map data, the information of the object and the position of the light over time; A time applying unit for grasping the current time for applying the contrast of the object differently according to the position of the light; An object extracting unit for extracting a vertex corresponding to the shape of the object through the information of the object stored in the storage unit; An area extracting unit for dividing a surface of the object into one or more regions using vertices of the objects extracted by the object extracting unit, and extracting vertices of the region; A color display unit for applying a color to each vertex of the region extracted from the region extractor to correspond to the position of the light, and applying the color of the region to a representative value or an average value of the color applied to each vertex of the region; A display unit configured to display the object to which at least one color of the area is applied; And a controller for controlling the storage unit, the time applying unit, the object extracting unit, the region extracting unit, the color extracting unit, and the display unit.

Accordingly, the method and apparatus for displaying contrast on an object in a three-dimensional map of the present invention brightly expresses a place where the amount of light is relatively large, and expresses a dark place where the amount of light is relatively small. There is an effect to increase the visibility of the dimensional image.

In addition, since the present invention applies the contrast to the object by reflecting the movement of the sun, it is possible to identify the direction and have another effect of estimating time.

In addition, the present invention has another effect of providing a realistic three-dimensional image by expressing the darker the farther from the ground on the ground at night without the sun.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

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 apparatus for displaying contrast on an object in a 3D map according to an exemplary embodiment of the present invention. Referring to FIG. 1, the contrast display device 100 includes a time applying unit 110, a storage unit 120, an object extracting unit 130, a control unit 140, an area extracting unit 150, and a color display unit 160. ), The contrast display unit 170 and the display unit 180.

The time applying unit 110 applies the time that the vehicle travels to the object to change the contrast of the object according to the time. The location of the sun applies differently from season to season. In other words, the location of the sun varies according to morning, lunch, and evening, and the sun's altitude, sunrise, and sunset time vary depending on the seasons of spring, summer, autumn, and winter.

Also, at night when the sun sets, it is usually brighter as it gets closer to the ground, and darker when it is far from the ground. This is due to the brightness of the near part of the ground at night by streetlights or lights on the ground.

Therefore, the position of the light that changes with each time and season is reflected through the time applying unit 110. At this time, in applying the time, the portion of the position of the sun according to the time and season of sunrise, sunset is stored in the storage unit 120.

The storage unit 120 stores various data and information necessary to provide a 3D map service. That is, the storage unit 120 stores the map data used in the 3D map service, the color information, the location information, the shape information of the object to which the contrast included in the map data is applied, and is applied by the time applying unit 110. It also stores the sun's position according to the season and time of day.

The object extractor 130 extracts an object to which the contrast stored in the storage 120 is to be applied. That is, the object extractor 130 extracts color information, location information, and shape information of the object to which the contrast is applied so that the contrast is applied to the thing. In addition, since contrast and color are applied differently according to the shape of the object, the vertices of the object are extracted through the shape information.

The area extractor 150 divides the surface of the object into one or more regions by using the vertices of the object extracted by the object extractor 130. In expressing the color, one side may be the same color, but different areas may be distinguished because several colors may be applied to one side. In addition, the vertices of each region are extracted.

The color expressing unit 160 expresses a color according to the color information of the object, and expresses the color in the region divided by the region extracting unit 150. That is, the color is applied to each vertex centered on the vertex of each region extracted by the region extractor 150, and the color is applied to the region using the representative value or the average value of the color applied to each vertex.

The color of each region may be the same color, and the criterion for applying the color of the region is the position of light. The first color is applied to the vertex close to the position of the light, and the second color is applied to the opposite vertex. The remaining vertices with no color applied apply the intermediate color of the first color and the second color.

The contrast display unit 170 may darken the entire surface of the contrast display unit 170 so that the entire background becomes dark when the sun approaches the sunset. That is, the contrast of the object is applied to the overall amount of light.

The controller 140 controls each component, and extracts an object, and controls to display by applying contrast and color by applying time.

The display unit 180 displays objects and map data to which color and contrast are applied in three dimensions.

2 is a flowchart of a method of displaying contrast on an object in a 3D map according to an exemplary embodiment of the present invention. Referring to FIG. 2, an object to which contrast is applied is extracted from the map data in operation S205. Grasp the time to apply the contrast to the object (S210). The time includes the seasons, which includes the altitude of the sun and the time the sun is floating. For example, even at the same 6:00 PM, the sun rises bright in summer, but dark in winter because the sun sets. This is reflected over time.

If the sun does not exist at night, the ground is bright due to the brightness of streetlights, lighting, outdoor advertising, etc., the darker the distance from the ground reflects.

The vertex of the object is extracted and the vertex close to the light is set as the first vertex (S215), and the vertex of the position opposite to the light is set as the second vertex (S220).

The first color is applied to the first vertex close to the light so as to correspond to the position of the light, and the second color is applied to the second vertex at the position opposite to the light (S225). An intermediate color of the first color and the second color is applied to one or more other vertices other than the first and second vertices.

When color is applied to the vertex of the object, the extracted object is divided into one or more regions for each surface (S230), and the vertex of the first region is extracted (S235). A first vertex adjacent to the light in the first region is extracted (S240), and a b vertex opposite to the light in the first region is extracted (S245).

The first color is applied to a vertex a and the first color b at a vertex (S250), the color a is based on the first color, and the criterion of the color b is applied based on the second color. That is, the vertex color of the first region is proportional to the size of the region and proportional to the color applied to the vertex of the object.

An average or representative value of the first and second colors is applied to the first area (S255).

The smaller the area, the more natural the color. Applying color to each area calculates the representative or average value of each color based on the color applied to each vertex and applies the color of the area.

The colors of the vertices of all the areas may be the same, but if they are different, the color of the face of the object where one or more areas are collected is different because different colors are applied to the areas. In addition, the color reflects the color information of the object and time.

Apply the overall contrast of each object over time. The object to which the contrast and the color are applied is displayed (S260).

3 is an embodiment of extracting an area when applying contrast to an object in a 3D map according to an embodiment of the present invention. Referring to FIG. 3, the surface having the same contrast and color as in (b) is applied through the process of (a). 3 illustrates an example of one surface of a 3D object, and is applied to the 3D object in the same manner.

When light is at the edge of the object, the first vertex 310 closest to the light is extracted, and the second vertex 320 opposite to the first vertex 310 is extracted. That is, the second vertex represents the vertex at the position farthest from the light.

The first color is applied to the first vertex 310 and the second color is applied to the second vertex. In this case, the third vertex 330 and the fourth vertex 340, which are not the first vertex 310 and the second vertex 320, are the third color that is the intermediate color of the first color and the second color when the color is applied. It is desirable to apply color.

In addition, when the position of the light is located on the upper part of the object, the first vertex 310 and the third vertex 330 may be applied in the same color, and the second vertex 320 and the fourth vertex 340 of The colors can be applied equally.

One side of the object is divided into predetermined areas. The area can be divided in proportion to the size of the plane, and the smaller the area, the more detailed the color can be displayed.

As an example, white may be applied to the first vertex 310 and black may be applied to the second vertex 320. In this case, when one area is divided into one or more areas and the area including the first vertex is called the first area, the first vertex 310 which is close to light is set as the a vertex 310 and is opposite to the light. The vertex of the position becomes the b vertex 312. A color is applied to the a vertex 310 and a b color is applied to the b vertex 312. In FIG. 3, the first color and the ath color are set to be the same, but different colors are generally applied to the vertices of each region.

The color of the first region is applied using the average value or the representative value of the first and second colors, and the color of each region is provided in this manner. The criteria of the a-color and the b-color are the first color and the second color, and the vertex as the color corresponding to the stepwise change from the first color of the first vertex 310 to the third color of the third vertex 330. Sets the color of the.

When the color of each area is applied, it provides the same surface as (b) and is set differently according to the position of light. The color of each region may be given the same color, or when all the regions have the same color, one side is provided with the same color.

4 is another embodiment of extracting an area when applying contrast to an object in a 3D map according to an embodiment of the present invention. Referring to Figure 4, it shows that the contrast of the object is applied differently according to the position of the light.

In the daytime, the standard of light can be the sun, and at night when there is no sun, it can be a street lamp or lighting. 4 shows the contrast of an object with respect to the sun.

Assuming that the sun changes from (a)-> (b)-> (c), the contrast of things will change correspondingly.

4 (a) shows that the sun is on the left side of the object, and the gradation is applied so that the left part is brighter and darker toward the right part. Also, the part of the object that is opposite the sun is applied darkly without gradation.

FIG. 4 (b) shows the contrast of the object when the sun is located above, and FIG. 4 (c) applies the contrast of the object when the sun is on the right side of the object.

4 illustrates an object to which the contrast is applied according to the position of the sun, and shows the contrast of one of the objects. When these things are applied directly to the map, most of them are not just one thing, but several things are nearby. In this case, when the object and the second object are in close proximity to the shadow of the object, the shadow is displayed with priority over the color and contrast of the object. Shadows reflect the shape, size, and location of the sun.

In the evening when the sun disappears, when the vehicle is driven, the street lamps, street lights, etc., that is, the parts near the ground are bright. Therefore, the part closer to the ground is applied brightly, and the farther it is from the ground, the darker it is applied. However, this is not fixed and can be changed at any time depending on the position of the light.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

1 is a block diagram of an apparatus for displaying contrast on an object in a 3D map according to an embodiment of the present invention;

2 is a flowchart of a method for displaying contrast on an object in a 3D map according to an embodiment of the present invention;

3 is an embodiment of extracting an area when applying contrast to an object in a 3D map according to an embodiment of the present invention;

4 is another embodiment of extracting an area when applying contrast to an object in a 3D map according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: contrast display device 110: time application unit

120: storage unit 130: object extraction unit

140: control unit 150: region extraction unit

160: color display unit 170: contrast display unit

180: display unit

Claims (21)

In the method of displaying the contrast on the object in the three-dimensional map, Extracting an object for applying the contrast from the map data and identifying a current time; Determining a position of light according to the current time, dividing a surface of the object into one or more regions, and extracting vertices of a first region; A third step of setting a vertex close to the light among the vertices of the first region as a vertex and setting a vertex opposite to the a vertex as the b vertex; A fourth step of applying a color a to the a vertex and a color b to the b vertex; A fifth step of setting and applying a color of the first region by using an average value or a representative value of the first color and the second color; A sixth step of applying color to one or more areas of the object and displaying the color; How to display the contrast on the object in the three-dimensional map comprising a. The method of claim 1, And the a-color is set in proportion to the size of the area based on the first color applied to the first vertex of the object in proximity to the light. 3. The method of claim 2, Wherein the b-color is set in proportion to the size of the area based on a second color applied to the second vertex of the object opposite to the first vertex. . The method of claim 1, And the second and b colors may apply the same color to the object in the 3D map. The method of claim 1, And dividing the area in proportion to the size of the object and dividing the area in the same form as the surface of the object. The method of claim 1, And a color of a vertex other than the vertex a and the vertex b to apply an intermediate color of the a color and the b color to display the contrast on the object in the 3D map. The method of claim 1, And applying contrast of the object as a whole corresponding to the amount of light. The method of claim 1, And displaying a shadow on the object in the 3D map when the shadow of the object is generated when the second object is close to the object. The method of claim 8, And the shadow is generated by reflecting any one or more of the shape, size, or position of the sun. The method of claim 1, Wherein the light position of the display method for displaying the contrast on an object in a three-dimensional map comprising a different setting according to the season. An apparatus for displaying contrast on an object in a three-dimensional map, A storage unit for storing map data, information of the object, and light location according to time; A time applicator configured to determine a current time for differently applying contrast of the object according to the position of the light; An object extracting unit for extracting a vertex corresponding to the shape of the object through the information of the object stored in the storage unit; An area extracting unit for dividing a surface of the object into one or more regions using vertices of the objects extracted by the object extracting unit, and extracting vertices of the region; A color display unit for applying a color to each vertex of the region extracted from the region extractor to correspond to the position of the light, and applying the color of the region to a representative value or an average value of the color applied to each vertex of the region; A display unit configured to display the object to which at least one color of the area is applied; And Control unit for controlling the storage unit, time application unit, object extraction unit, area extraction unit, color display unit and display unit Apparatus for displaying the contrast on an object in the three-dimensional map comprising a. The method of claim 11, And a color of each vertex of the region in the color display unit as a color of a vertex of the object extracted by the object extracting unit as a reference. The method of claim 12, The vertex color of the object is set to correspond to the position of the light, the device for displaying the contrast on the object in the three-dimensional map. The method of claim 11, Apparatus for displaying contrast on an object in a three-dimensional map comprising that the applied color of each vertex of the area may be the same. The method of claim 11, And dividing the area in proportion to the size of the object and dividing the area in the same shape as the plane of the object. The method of claim 11, And the at least one area may apply the same color to the object in the 3D map. The method of claim 11, And a contrast display unit which applies the contrast of the object as a whole corresponding to the amount of light. The method of claim 11, When a shadow of the object is generated when the second object comes close to the object to which the color and contrast are applied, the shadow is displayed with priority over the color and contrast of the object. A device that displays the contrast on. The method of claim 18, And the shadow is generated by reflecting any one or more of the shape, size, or position of the sun. The method of claim 11, The light position is a device for displaying the contrast on the object in the three-dimensional map comprising a different setting according to the season. The method of claim 11, The information of the thing is a device for displaying the contrast on the thing in the three-dimensional map including any one or more of color information, location information or shape information.

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