Vehicle drive assist system, vehicle drive assist method, and vehicle drive assist program
Vehicle drive assist systems, methods, and programs display an alert image superimposed on a real view on a display. The systems, methods and programs determine a blind spot area, the blind spot area being an area that becomes a blind spot of a driver of a vehicle due to a front obstacle present on a front side in a traveling direction of the vehicle. The alert image is displayed such that the alert image is superimposed on a target point, the target point being a point where traveling of the vehicle is likely to be influenced when there is a moving obstacle jumping out of the blind spot area.
1. A vehicle drive assist system comprising:
a processor programmed to:
capture an image of an area on a front side in a traveling direction of a vehicle;
determine a blind spot area, the blind spot area being an area that becomes a blind spot of a driver of the vehicle due to a front obstacle present on the front side in the traveling direction of the vehicle, the blind spot area being determined by:
setting a determination area, which is a predetermined area of a surface of a road intersecting a road on which the vehicle is traveling, a corner of the predetermined area being defined by a point on a surface of the road on which the vehicle is traveling and an edge portion of the front obstacle;
obtaining information of a first area, which is a road surface area of the road intersecting the road on that the vehicle is traveling within the determination area;
determining a second area, which is a road surface area of only a part of the road intersecting the road on which the vehicle is traveling that is visible within the captured image; and
calculating the blind spot area by subtracting the second area from the first area; and
display an alert image superimposed on a real view on a display by:
setting a size of the alert image based on the calculated blind spot area;
setting a target point at a point where traveling of the vehicle is likely to be influenced when there is a moving obstacle jumping out of the blind spot area; and
superimpose the alert image on the target point.
2. The vehicle drive assist system according to claim 1 , wherein the target point is a point obtained with reference to a point of intersection of a jump-out route of the moving obstacle and a traveling route of the vehicle on a travel lane of the vehicle.
3. The vehicle drive assist system according to claim 1 , wherein the alert image is an image having an area including the target point, and is displayed at least within a travel lane of the vehicle in front in the traveling direction of the vehicle.
4. The vehicle drive assist system according to claim 1 , wherein a display area of the alert image on the real view decreases as the blind spot area decreases.
5. The vehicle drive assist system according to claim 1 , wherein a display area of the alert image on the real view decreases as the vehicle approaches the blind spot area.
6. The vehicle drive assist system according to claim 1 , wherein the alert image changes based on the size of the determined blind spot area.
7. The vehicle drive assist system according to claim 1 , wherein the alert image has a display area spreading around from a base point of creation of the blind spot area.
8. The vehicle drive assist system according to claim 1 , wherein the alert image is displayed in a mode in which an attention call level is shown in a stepwise manner, the attention call level representing a level of a call for vehicle's attention.
9. The vehicle drive assist system according to claim 1 , wherein a display mode of the alert image varies depending on a road environment in which the vehicle travels.
10. The vehicle drive assist system according to claim 1 , wherein when a size of the front obstacle is less than or equal to a preset threshold value, the alert image is not displayed.
11. The vehicle drive assist system according to claim 1 , wherein
the processor is programmed to display a recommended route image superimposed on the real view, the recommended route image representing a recommended route, the recommended route being a traveling route recommended for the vehicle; and
the recommended route image is displayed so as to go around the target point.
12. A vehicle drive assist method comprising:
capturing an image of an area on a front side in a traveling direction of a vehicle;
determining a blind spot area, the blind spot area being an area that becomes a blind spot of a driver of the vehicle due to a front obstacle present on the front side in a traveling direction of the vehicle, the blind spot area being determined by:
setting a determination area, which is a predetermined area of a surface of a road intersecting a road on which the vehicle is traveling, a corner of the predetermined area being defined by a point on a surface of the road on which the vehicle is traveling and an edge portion of the front obstacle;
obtaining information of a first area, which is a road surface area of the road intersecting the road on that the vehicle is traveling within the determination area;
determining a second area, which is a road surface area of only a part of the road intersecting the road on which the vehicle is traveling that is visible within the captured image; and
calculating the blind spot area by subtracting the second area from the first area; and
displaying an alert image superimposed on a real view on a display by:
setting a size of the alert image based on the calculated blind spot area;
setting a target point at a point where traveling of the vehicle is likely to be influenced when there is a moving obstacle jumping out of the blind spot area; and
superimposed superimposing the alert image on the target point.
13. A computer-readable storage medium storing a computer-executable vehicle drive assist program that causes a computer to perform functions, comprising:
capturing an image of an area on a front side in a traveling direction of a vehicle;
determining a blind spot area, the blind spot area being an area that becomes a blind spot of a driver of the vehicle due to a front obstacle present on the front side in the traveling direction of the vehicle, the blind spot area being determined by:
setting a determination area, which is a predetermined area of a surface of a road intersecting a road on which the vehicle is traveling, a corner of the predetermined area being defined by a point on a surface of the road on which the vehicle is traveling and an edge portion of the front obstacle;
obtaining information of a first area, which is a road surface area of the road intersecting the road on that the vehicle is traveling within the determination area;
determining a second area, which is a road surface area of only a part of the road intersecting the road on which the vehicle is traveling that is visible within the captured image; and
calculating the blind spot area by subtracting the second area from the first area; and
displaying an alert image superimposed on a real view on a display by:
setting a size of the alert image based on the calculated blind spot area;
setting a target point at a point where traveling of the vehicle is likely to be influenced when there is a moving obstacle jumping out of the blind spot area; and
superimposing the alert image on the target point.