Display control device, display control method, and computer-readable storage medium

1 . A display control device for performing control to display states of a vicinity of a vehicle at a display device that is provided in a cabin of the vehicle and is viewable by a driver, the display control device comprising a processor configured to:

acquire, from an autonomous driving electronic control unit, an operation state of each of a plurality of driving assistance functions;

determine a display mode of a state of the vicinity of the vehicle including an image of a road surface and an image of a boundary line based on a change in the acquired operation state of each of the plurality of driving assistance functions such that the display mode changes in accordance with the change in the acquired operation states of each of the plurality of driving assistance functions; and

change a display mode of the image of the road surface in accordance with an operation state of a first driving assistance function of the plurality of driving assistance functions, and change a display mode of the image of the boundary line in accordance with an operation state of a second driving assistance function of the plurality of driving assistance functions different from the first driving assistance function.

2 . The display control device according to claim 1 , wherein the state of the vicinity of the vehicle whose display mode is caused to change by the processor includes at least one of the image of the road surface of a traffic lane along which the vehicle is running and the image of the boundary line of the traffic lane.

3 . The display control device according to claim 2 , wherein the processor is further configured to cause the display mode of the image of the road surface to change in accordance with an operation state of a vehicle following distance control function that maintains an inter-vehicle distance between the vehicle and a preceding vehicle running in front of the vehicle.

4 . The display control device according to claim 3 , further comprising a sensor that is configured to detect an accelerator operation by an occupant of the vehicle,

wherein the processor is further configured to change the display mode of the image of the road surface when an accelerator operation is detected by the sensor during operation of the vehicle following distance control function.

5 . The display control device according to claim 2 , wherein, when a condition designated as a condition causing a warning is satisfied, the processor is further configured to perform control to set a color of the image of the road surface to a specific color.

6 . The display control device according to claim 2 , wherein the display mode of the image of the boundary line is caused to change in accordance with an operation state of a lane centering assist function that assists the vehicle to run along a middle of the traffic lane.

7 . The display control device according to claim 2 , wherein

a vehicle following distance control function maintains an inter-vehicle distance between the vehicle and a preceding vehicle running in front of the vehicle,

a lane centering assist function assists the vehicle to run along a middle of a traffic lane and,

when the vehicle following distance control function and the lane centering assist function are operating normally and a condition designated as a condition representing the vehicle being in traffic congestion is satisfied, the processor is further configured to change display modes of the image of the road surface and the image of the boundary line.

8 . A display control method in which a computer performs control to display states of a vicinity of a vehicle at a display device that is provided in a cabin of the vehicle and is viewable by a driver, the display control method comprising:

acquiring, from an autonomous driving electronic control unit, an operation state of each of a plurality of driving assistance functions;

determining a display mode of a state of the vicinity of the vehicle including an image of a road surface and an image of a boundary line based on a change in the acquired operation state of each of the plurality of driving assistance functions such that the display mode changes in accordance with the change in the acquired operation states of each of the plurality of driving assistance functions; and

changing a display mode of the image of the road surface in accordance with an operation state of a first driving assistance function of the plurality of driving assistance functions, and changing a display mode of the image of the boundary line in accordance with an operation state of a second driving assistance function of the plurality of driving assistance functions different from the first driving assistance function.

9 . A non-transitory computer-readable storage medium storing a display control program for causing a computer that performs control to display states of a vicinity of a vehicle at a display device that is provided in a cabin of the vehicle and is viewable by a driver to:

acquire, from an autonomous driving electronic control unit, an operation state of each of a plurality of driving assistance functions;

determine a display mode of a state of the vicinity of the vehicle including an image of a road surface and an image of a boundary line based on a change in the acquired operation state of each of the plurality of driving assistance functions such that the display mode changes in accordance with the change in the acquired operation states of each of the plurality of driving assistance functions; and

change a display mode of the image of the road surface in accordance with an operation state of a first driving assistance function of the plurality of driving assistance functions, and change a display mode of the image of the boundary line in accordance with an operation state of a second driving assistance function of the plurality of driving assistance functions different from the first driving assistance function.

10 . The display control device according to claim 2 , wherein the operation state includes an off state in which a driving assistance function is turned off by a button and on states in which the driving assistance function is turned on by a button, and the on states include at least one of (i) a first operation state in which the driving assistance function is operating normally, (ii) a second operation state in which the driving assistance function is not operating normally, and (iii) a third operation state in which the driving assistance function is operating normally but an alert is being given to an occupant of the vehicle.

11 . The display control device according to claim 10 , wherein the processor is further configured to perform control to recognize whether the operation state is the off state, the first operation state, the second operation state, or the third operation state, by changing display modes of the image of the road surface and images of boundary lines based on a change in the recognized operation state.

12 . The display control device according to claim 1 , wherein the plurality of driving assistance functions include two or more of a vehicle following distance control function that maintains an inter-vehicle distance between the vehicle and a preceding vehicle, a lane centering assist function that assists the vehicle to run along a middle of a traffic lane, and a traffic jam assist function that assists running of the vehicle under a traffic congestion condition.

13 . The display control device according to claim 1 , wherein the display mode of the state of the vicinity of the vehicle includes at least one of a color, a brightness, a pattern, a line type, or a thickness of a displayed image.