Route guide device and route guide method
Abstract
[Task] For example, the same 3D image is displayed regardless of whether the intersection is turned left or right. Therefore, when the shape of the intersection is complicated, there is a problem that the user may not be able to easily grasp the course direction in the intersection.
Solution.Based on the shape of the intersection and / or the positional relationship of the vehicle with respect to the intersection, at least one of the coordinates of the viewpoint, the direction of the line of sight, and the viewing angle in the three-dimensional space for generating the three-dimensional image is adjusted.
Term
Term ended
Projected expiry passed 2 March 2021, 5.6 years ago.
- Priority and filed
- Published
- Projected expiry
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17 claims: 3 independent, 14 dependent
- 1【特許請求の範囲】 【請求項1】 現在地から目的地に至る経路を探索する探索手段と、 上記探索手段により探索された経路上に存在する交差点及び車両の3次元画像を表示する表示手段とを備えた経路案内装置において、 上記表示手段は、交差点の形状及び/又は交差点に対する車両の位置関係に基づいて、3次元画像を生成させるための3次元空間上における視点の座標、視線の方向、視野角の少なくとも1つを調整することを特徴とする経路案内装置。
- 2【請求項2】 表示手段は、交差点と車両を結ぶ延長線上に視点をおき、その視点から見た交差点の3次元画像を表示することを特徴とする請求項1記載の経路案内装置。
- 3【請求項3】 表示手段は、車両から交差点までの距離が設定距離より短くなると、車両位置を基準にして視点を移動させることを特徴とする請求項2記載の経路案内装置。
- 4【請求項4】 表示手段は、道路の傾斜角度に応じて視点の仰角を調整することを特徴とする請求項2記載の経路案内装置。
- 5【請求項5】 表示手段は、交差点の手前に段差が存在し、その段差に当該交差点が隠れてしまう場合、または、その段差に当該交差点の進入路が隠れてしまう場合、視点の位置を移動することを特徴とする請求項2記載の経路案内装置。
- 6【請求項6】 表示手段は、交差点の先が下り坂の場合、視点の位置を移動することを特徴とする請求項2記載の経路案内装置。
- 7【請求項7】 表示手段は、案内対象の交差点が連続する場合、1つ目の交差点と2つ目の交差点との中間点と車両を結ぶ延長線上に視点をおき、その視点から見た交差点の3次元画像を表示することを特徴とする請求項1記載の経路案内装置。
- 8【請求項8】 表示手段は、交差点の3次元画像の他に、路面の高低図を表示することを特徴とする請求項1記載の経路案内装置。
- 9【請求項9】 表示手段は、交差点の3次元画像の視点を基準位置より高くすることを特徴とする請求項1又は請求項8記載の経路案内装置。
- 10【請求項10】 表示手段は、交差点の進入路に対する接線方向に視点をおき、その視点から見た交差点の3次元画像を表示することを特徴とする請求項9記載の経路案内装置。
- 11【請求項11】 表示手段は、車両が交差点に進入する前に、当該交差点における経路を案内する3次元動画像をプレビュー表示することを特徴とする請求項1から請求項10のうちのいずれか1項記載の経路案内装置。
- 12【請求項12】 表示手段は、車速が基準速度を下回る場合に限り、3次元動画像をプレビュー表示することを特徴とする請求項11記載の経路案内装置。
- 13【請求項13】 表示手段は、3次元動画像をプレビュー表示する際、プレビュー対象の交差点と現在地の双方の位置関係を示す地図を表示することを特徴とする請求項11記載の経路案内装置。
- 14【請求項14】 表示手段は、交差点の3次元画像とプレビュー表示する3次元動画像の表示形態を区別することを特徴とする請求項11記載の経路案内装置。
- 15【請求項15】 表示手段は、案内対象の交差点のうち、難易度が設定値より高い交差点の3次元動画像をプレビュー表示することを特徴とする請求項11記載の経路案内装置。
- 16【請求項16】 表示手段は、設定値の変更を受け付けることを特徴とする請求項15記載の経路案内装置。
- 17【請求項17】 現在地から目的地に至る経路を探索し、その経路上に存在する交差点の3次元画像を表示する経路案内方法において、その交差点に対する車両の位置関係を考慮して、その3次元画像の表示方向を調整することを特徴とする経路案内方法。
Independent claims17
147 paragraphs in 1 section, as filed
Description: TECHNICAL FIELD [Detailed description of the invention]
【0001】
[Technical field to which the invention belongs]
The present invention relates to a route guidance device and a route guidance method for displaying a three-dimensional image of an intersection existing on a route from a current location to a destination.
【0002】
[Conventional technology]
When the destination is set by the user, the conventional route guidance device searches for a route from the current location to the destination. Then, when the vehicle approaches an intersection to be guided on the route, the image of the intersection is displayed three-dimensionally to guide the course direction in the intersection.
【0003】
[Problems to be Solved by the Invention]
Since the conventional route guidance device is configured as described above, for example, the same three-dimensional image (arrows and the like are added) regardless of whether the intersection is turned left or right. That part is different) is displayed. Therefore, when the shape of the intersection is complicated, the user cannot easily grasp the course direction in the intersection, which is a problem.
【0004】
The present invention has been made to solve the above-mentioned problems, and a route guidance device and a route guidance method that allow a user to easily grasp the course direction in an intersection even if the shape of the intersection is complicated. The purpose is to get.
【0005】
[Means for solving problems]
In the route guidance device according to the present invention, the coordinates of the viewpoint, the direction of the line of sight, and the visual field in the three-dimensional space for the display means to generate a three-dimensional image based on the shape of the intersection and / or the positional relationship of the vehicle with respect to the intersection. It is designed to adjust at least one of the corners.
【0006】
The route guidance device according to the present invention places a viewpoint on an extension line connecting an intersection and a vehicle, and displays a three-dimensional image of the intersection as seen from the viewpoint.
【0007】
The route guidance device according to the present invention is designed to move the viewpoint with reference to the vehicle position when the distance from the vehicle to the intersection becomes shorter than the set distance.
【0008】
The route guidance device according to the present invention is adapted to adjust the elevation angle of the viewpoint according to the inclination angle of the road.
【0009】
The route guidance device according to the present invention moves the position of the viewpoint when there is a step in front of the intersection and the intersection is hidden by the step, or when the approach path of the intersection is hidden by the step. It is something that I tried to do.
【0010】
The route guidance device according to the present invention is designed to move the position of the viewpoint when the end of the intersection is a downhill.
【0011】
When the intersections to be guided are continuous, the route guidance device according to the present invention places a viewpoint on an extension line connecting the intermediate point between the first intersection and the second intersection and the vehicle, and the intersection viewed from that viewpoint. It is designed to display a three-dimensional image of.
【0012】
The route guidance device according to the present invention is designed to display a height map of a road surface in addition to a three-dimensional image of an intersection.
【0013】
The route guidance device according to the present invention is such that the viewpoint of the three-dimensional image of the intersection is higher than the reference position.
【0014】
The route guidance device according to the present invention has a viewpoint in the tangential direction with respect to the approach road of the intersection, and displays a three-dimensional image of the intersection as seen from the viewpoint.
【0015】
The route guidance device according to the present invention is designed to preview and display a three-dimensional moving image that guides the route at the intersection before the vehicle enters the intersection.
【0016】
The route guidance device according to the present invention is designed to preview a three-dimensional moving image only when the vehicle speed is lower than the reference speed.
【0017】
The route guidance device according to the present invention displays a map showing the positional relationship between the intersection to be previewed and the current location when the three-dimensional moving image is preview-displayed.
【0018】
The route guidance device according to the present invention is designed to distinguish between a three-dimensional image of an intersection and a display form of a three-dimensional moving image to be preview-displayed.
【0019】
The route guidance device according to the present invention is designed to preview and display a three-dimensional moving image of an intersection whose difficulty level is higher than a set value among the intersections to be guided.
【0020】
The route guidance device according to the present invention is designed to accept changes in set values.
【0021】
The route guidance method according to the present invention adjusts the display direction of the three-dimensional image in consideration of the positional relationship of the vehicle with respect to the intersection.
【0022】
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described. Embodiment 1. FIG. 1 is a configuration diagram showing a route guidance device according to a first embodiment of the present invention. In the figure, 1 is a destination setting unit for setting a destination, and 2 is a GPS for detecting the current location of a vehicle. Position detection unit such as, 3 is a route search unit (search means) that searches the route from the current location to the destination, 4 is a 3D image of the intersection existing on the route searched by the route search unit 3 on the display 5. The display control unit to display, 5 is a display. The display means is composed of the display control unit 4 and the display 5. FIG. 2 is a flowchart showing a route guidance method according to the first embodiment of the present invention.
【0023】
Next, the operation will be described. After the user operates the destination setting unit 1 to set the destination (step ST1), when the position detection unit 2 detects the current location of the vehicle (step ST2), the route search unit 3 refers to the map database and the current location. Search for a route from to the destination (step ST3).
【0024】
The display control unit 4 displays the navigation screen on the display 5 until the vehicle reaches the destination. However, the navigation screen is a three-dimensional image of landscapes such as roads and buildings, and an arrow indicating the own vehicle mark and the course direction is added to the image. Further, when the display control unit 4 approaches the intersection to be guided (for example, the intersection that turns left or right) among the intersections existing on the route searched by the route search unit 3, as shown in FIG. 3A. Then, the three-dimensional image of the intersection is displayed on the display 5 (steps ST4 to ST6). Fig. 3 (a) shows an example in which a vehicle exists at a point where the distance to the intersection is 300 m.
【0025】
The image of the intersection changes as the vehicle moves. For example, when the set distance is set to 50 m, up to the point where the distance to the intersection reaches 50 m is three-dimensional based on the principle shown in Fig. 4. Adjust at least one of the coordinates of the viewpoint, the direction of the viewpoint, and the viewing angle in the three-dimensional space for generating the image (see Figures 3 (a) to (d)). That is, a viewpoint (in FIG. 4, a camera mark is marked at the position of the viewpoint) is placed on the extension line connecting the intersection and the vehicle, and a three-dimensional image of the intersection viewed from that viewpoint is displayed. The traffic light at the intersection is placed in the center of the intersection and always rotates so as to face the front of the screen.
【0026】
Then, when the distance from the vehicle to the intersection is shorter than 50 m, at least one of the coordinates of the viewpoint, the direction of the viewpoint, and the viewing angle in the three-dimensional space for generating a three-dimensional image based on the principle shown in FIG. Adjust (see Figures 3 (e)-(g)). That is, the viewpoint is moved with reference to the vehicle position. In the examples of FIGS. 3 (e) to 3 (g), the viewpoint is rotated to the right with respect to the vehicle position so that the arrow indicating the course direction points upward (the Z axis is rotated to the right). ).
【0027】
As is clear from the above, according to the first embodiment, the coordinates and the line of sight of the viewpoint in the three-dimensional space for generating the three-dimensional image based on the shape of the intersection and / or the positional relationship of the vehicle with respect to the intersection. Since it is configured to adjust at least one of the direction and the viewing angle, even if the shape of the intersection is complicated, the user can easily grasp the course direction in the intersection.
【0028】
Embodiment 2. Although not particularly mentioned in the above-described first embodiment, the display control unit 4 may adjust the elevation angle of the viewpoint according to the inclination angle of the road. That is, as shown in FIGS. 6 (a) and 6 (b), when the inclination angle of the road is less than 9 degrees, the three-dimensional image of the intersection is displayed without changing the elevation angle of the viewpoint. To. On the other hand, as shown in FIGS. 6 (c) and 6 (d), when the inclination angle of the road is 9 degrees or more, a three-dimensional image of the intersection is displayed while changing the elevation angle of the viewpoint together with the own vehicle mark. To do so. As a result, even if the inclination angle of the road becomes large, the own vehicle mark and the intersection can be displayed on the three-dimensional image at the same time.
【0029】
Embodiment 3. Although not particularly mentioned in the above-described first embodiment, when there is a step in front of the intersection and the intersection is hidden by the step, or the approach path of the intersection is in the step. If it is hidden, the display control unit 4 may move the position of the viewpoint.
【0030】
For example, as shown in Fig. 7, when a vehicle is at a point 300 m before the intersection, the steps overlap on the straight line from the intersection to the viewpoint, or the steps are on the straight line from the point 50 m before the intersection to the viewpoint. If they overlap, move the viewpoint in the Z-axis direction so that the position of the viewpoint is higher. Alternatively, the viewpoint may be rotated on the X-axis to change the tilt, or the elevation angle, field of view, or the like of the viewpoint may be changed. As a result, even if there is a large step in front of the intersection, the intersection can be displayed on the three-dimensional image.
【0031】
Embodiment 4. In the above-described third embodiment, when there is a large step in front of the intersection, the display control unit 4 moves the position of the viewpoint. However, when the point of the intersection is a downhill, the viewpoint The position of may be moved.
【0032】
For example, if the difference between the altitude of the intersection and the altitude of a point 30 m past the intersection is 2 m or more (see Fig. 8), the viewpoint is moved in the Z-axis direction so that the position of the viewpoint is higher. Alternatively, the viewpoint may be rotated on the X-axis to change the tilt, or the elevation angle, field of view, or the like of the viewpoint may be changed. This has the effect of being able to display the tip of the intersection on a three-dimensional image even when the tip of the intersection is downhill.
【0033】
Embodiment 5. In the above-described first embodiment, the viewpoint is placed on the extension line connecting the intersection and the vehicle up to the point where the distance to the intersection reaches 50 m. However, as shown in FIGS. 9 and 10. , If the intersections to be guided are continuous (for example, if the distance between the two intersections is within 200 m), the viewpoint should be on the extension line connecting the vehicle and the midpoint between the first and second intersections. You may also display a three-dimensional image of the intersection as seen from that viewpoint. As a result, even when the intersections to be guided are continuous, the user can easily grasp the course direction in the intersections.
【0034】
Embodiment 6. Although not particularly mentioned in the above-described first embodiment, for an intersection whose shape is difficult to grasp, a height map of the road surface may be displayed in addition to the three-dimensional image of the intersection. .. Further, the viewpoint of the three-dimensional image at the intersection may be set higher than the reference position to display the three-dimensional image as shown in the top view.
【0035】
Here, in the example of FIG. 11, the height map of the road surface is displayed on the right side of the figure, and the three-dimensional image like the top view is displayed on the left side of the figure. In addition, in order to linearly limit the movement of the viewpoint and facilitate the creation of the elevation map, as shown in Fig. 12, the viewpoint is placed in the tangential direction with respect to the approach path of the intersection, and the three dimensions of the intersection viewed from that viewpoint. Display the image.
【0036】
Embodiment 7. Although not particularly mentioned in the above-described first embodiment, a three-dimensional moving image that guides the route at the intersection may be preview-displayed before the vehicle enters the intersection. That is, before the vehicle actually enters the intersection under conditions that do not interfere with safety, such as when the vehicle speed is lower than the reference speed (for example, when the vehicle is stopped due to waiting for a traffic light or the like). In order to simulate the situation, the display direction of the intersection is adjusted sequentially, and a preview display of a three-dimensional moving image in which the arrow indicating the course direction of the vehicle is constantly extended is displayed.
【0037】
Here, in the example of FIG. 13, the three-dimensional moving image is displayed on the right side of the figure, and the two-dimensional map showing the intersection and the current location is displayed on the left side of the figure. However, in order to distinguish the three-dimensional moving image from the three-dimensional image of the intersection in the first embodiment, the arrow is animated without the own vehicle mark appearing. In addition, the differences in appearance are clarified by darkening the areas other than the arrows, roads, and traffic lights. In addition, a black arrow is displayed in advance to facilitate understanding.
【0038】
The display control unit 4 previews and displays a three-dimensional moving image of an intersection whose difficulty level is higher than the set value among the intersections of the guidance target existing on the route. That is, it is possible to preview the three-dimensional moving images of all the intersections to be guided, but since the difficulty level of the shape of the intersections is not uniform and the user's drive technique is not uniform, the display control unit 4 Accept changes to the set value, and preview the 3D moving image only at intersections that are more difficult than the set value.
【0039】
This allows users such as beginners and the elderly to preview 3D moving images of more intersections, while users with high driving techniques omit simple intersections and make 3D videos of fairly difficult intersections. Only the image can be previewed.
【0040】
[Effect of the invention]
As described above, according to the present invention, the coordinates of the viewpoint and the direction of the line of sight in the three-dimensional space for the display means to generate a three-dimensional image based on the shape of the intersection and / or the positional relationship of the vehicle with respect to the intersection. Since it is configured to adjust at least one of the viewing angles, there is an effect that the user can easily grasp the course direction in the intersection even if the shape of the intersection is complicated.
【0041】
According to the present invention, a viewpoint is placed on an extension line connecting the intersection and the vehicle, and a three-dimensional image of the intersection viewed from that viewpoint is displayed. Therefore, even if the approach road of the intersection is curved, the own vehicle The intersection can be displayed on the three-dimensional image together with the mark, and as a result, there is an effect that the user can be notified of the existence of the intersection with a margin.
【0042】
According to the present invention, when the distance from the vehicle to the intersection is shorter than the set distance, the viewpoint is moved based on the vehicle position. Therefore, before actually entering the intersection, the scenery in the course direction and the like can be seen. As a result of being displayed, there is an effect that the user can easily grasp the course direction in the intersection.
【0043】
According to the present invention, since the elevation angle of the viewpoint is adjusted according to the inclination angle of the road, the own vehicle mark and the intersection can be displayed on the three-dimensional image at the same time even if the inclination angle of the road becomes large. Has the effect of being able to.
【0044】
According to the present invention, when a step exists in front of an intersection and the intersection is hidden by the step, or when the approach path of the intersection is hidden by the step, the position of the viewpoint is moved. Since it is configured, there is an effect that the intersection can be displayed on the three-dimensional image even if there is a large step in front of the intersection.
【0045】
According to the present invention, when the tip of the intersection is a downhill, the position of the viewpoint is moved. Therefore, even if the tip of the intersection is a downhill, the tip of the intersection can be displayed on the three-dimensional image. There is an effect that can be done.
【0046】
According to the present invention, when the intersections to be guided are continuous, a viewpoint is placed on an extension line connecting the intermediate point between the first intersection and the second intersection and the vehicle, and the three-dimensional intersection viewed from that viewpoint. Since the image is configured to be displayed, there is an effect that the user can easily grasp the course direction in the intersection even when the intersections to be guided are continuous.
【0047】
According to the present invention, since the height map of the road surface is displayed in addition to the three-dimensional image of the intersection, the user can easily grasp the course direction in the intersection even at the intersection where the shape is difficult to grasp. Has the effect of being able to.
【0048】
According to the present invention, since the viewpoint of the three-dimensional image of the intersection is set to be higher than the reference position, the user can easily grasp the course direction in the intersection even at the intersection where the shape is difficult to grasp. There is.
【0049】
According to the present invention, since the viewpoint is set in the tangential direction with respect to the approach path of the intersection and the three-dimensional image of the intersection viewed from the viewpoint is displayed, the effect of facilitating the creation of the elevation map can be achieved. is there.
【0050】
According to the present invention, before the vehicle enters the intersection, a three-dimensional moving image that guides the route at the intersection is preview-displayed, so that the simulation can be performed before the vehicle actually enters the intersection. There is an effect that can be done.
【0051】
According to the present invention, since the stereoscopic moving image is preview-displayed only when the vehicle speed is lower than the reference speed, there is an effect that the safety of the vehicle can be ensured.
【0052】
According to the present invention, when the 3D moving image is preview-displayed, a map showing the positional relationship between the intersection to be previewed and the current location is displayed, so that the difference between the current location and the preview point can be clearly communicated. Has the effect of being able to.
【0053】
According to the present invention, since the display form of the three-dimensional image of the intersection and the three-dimensional moving image to be previewed is distinguished, it is possible to easily confirm what kind of screen is being displayed on the display. There is an effect that can be done.
【0054】
According to the present invention, among the intersections to be guided, the three-dimensional moving image of the intersection whose difficulty level is higher than the set value is preview-displayed. Therefore, only the three-dimensional moving image of the intersection having a high difficulty level is preview-displayed. There is an effect that can be done.
【0055】
According to the present invention, since it is configured to accept the change of the set value , there is an effect that the user can customize the three-dimensional moving image of the intersection displayed in the preview.
【0056】
According to the present invention, the display direction of the three-dimensional image is adjusted in consideration of the positional relationship of the vehicle with respect to the intersection. Therefore, even if the shape of the intersection is complicated, the user can change the course direction in the intersection. It has the effect of being easily grasped.
[Simple explanation of drawings]
[Figure 1]
It is a block diagram which shows the route guidance apparatus by Embodiment 1 of this invention.
[Figure 2]
It is a flowchart which shows the route guidance method by Embodiment 1 of this invention.
[Fig. 3]
It is explanatory drawing which shows the change of the display direction of a 3D image.
[Fig. 4]
It is explanatory drawing which shows the adjustment principle of the display direction of a 3D image.
[Fig. 5]
It is explanatory drawing which shows the adjustment principle of the display direction of a 3D image.
[Fig. 6]
It is explanatory drawing which shows the change of the elevation angle of a viewpoint.
[Fig. 7]
It is explanatory drawing which shows the example which the step exists in front of an intersection.
[Fig. 8]
It is explanatory drawing which shows the example which the tip of an intersection is a downhill.
[Fig. 9]
It is explanatory drawing which shows the case where the intersection of the guidance target is continuous.
[Fig. 10]
It is explanatory drawing which shows the adjustment principle of the display direction of a 3D image.
[Fig. 11]
It is explanatory drawing which shows the 3D image which added the elevation figure to the right side.
[Fig. 12]
It is explanatory drawing which shows the adjustment principle of the display direction of a 3D image.
[Fig. 13]
It is explanatory drawing which shows the 3D moving image of an intersection.
[Explanation of symbols]
1 Destination setting unit, 2 Position detection unit, 3 Route search unit (search means), 4 Display control unit (display means), 5 Display (display means).
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Numbers
- Publication
- 2002-257576
- Publication, DOCDB
- 2002257576
- Publication, EPODOC
- JP2002257576
- Application
- 58897
- Application, DOCDB
- 2001058897
- Application, EPODOC
- JP20010058897
Titles2
- Japanese
- 【発明の名称】経路案内装置及び経路案内方法
- English
- INDUSTRIAL APPLICABILITY: Route guidance device and route guidance method.
Classification
- IPC, 4
- G09B29 00
- G01C21 00
- G06T17 05
- G08G1 0969