Drive assist device and drive assist method

A drive assist device of a vehicle comprising:

• a vehicle speed acquirer configured to acquire a vehicle speed;
• a fatigue degree estimator configured to estimate a fatigue degree of a driver of the vehicle based on information detected by one or more sensors associated with the vehicle;
• a display controller configured to change a movement speed or a display range of an optical flow to be presented to the driver via a display of the vehicle, in a case where the vehicle speed falls outside a predetermined range;
• and
• an environmental information acquirer configured to acquire an environmental information around the vehicle based on information detected by the one or more sensors,
• wherein the display controller changes the display range of the optical flow to be presented to the driver on a basis of the environmental information or a fatigue degree, and
• wherein in a case where there is no need to secure a view of the driver in accordance with the environmental information and the driver is not in a fatigue state associated with the fatigue degree, the display controller makes the movement speed of the optical flow faster without changing the display range of the optical flow.

A drive assist method comprising:

• estimating, by a fatigue degree estimator of a vehicle, a fatigue degree of a driver of the vehicle based on information detected by one or more sensors associate with the vehicle;
• acquiring, by an environmental information acquirer of the vehicle, an environmental information around the vehicle based on information detected by the one or more sensors;
• changing, by a display controller of the vehicle, a display range of an optical flow to be presented to the driver via a display of the vehicle, on a basis of the environmental information or the fatigue degree,
• wherein in a case where there is no need to secure a view of the driver in accordance with the environmental information and the driver is not in a fatigue state associated with the fatigue degree, making, by the display controller, a movement speed of the optical flow faster without changing the display range of the optical flow.

A drive assist method comprising:

• acquiring, by a vehicle speed acquirer associated with a vehicle, a vehicle speed;
• estimating, by a fatigue degree estimator of the vehicle, a fatigue degree of a driver of the vehicle based on information detected by one or more sensors associate with the vehicle;
• changing, by a display controller of the vehicle, a movement speed or a display range of an optical flow to be presented to a driver via a display of the vehicle, in a case where the vehicle speed falls outside a predetermined range;
• acquiring, by the one or more sensors, an environmental information around the vehicle,
• wherein changing, by the display controller, the display range of the optical flow to be presented to the driver comprises changing the display range of the optical flow on a basis of the environmental information or the fatigue degree;
• and
• wherein in a case where there is no need to secure a view of the driver in accordance with the environmental information and the driver is not in a fatigue state associated with the fatigue degree, making, by the display controller, the movement speed of the optical flow faster without changing the display range of the optical flow.

A drive assist device comprising circuitry configured to

• estimate, by a fatigue degree estimator of a vehicle, a fatigue degree of a driver of the vehicle based on information detected by one or more sensors associate with the vehicle,
• acquire, by an environmental information acquirer of the vehicle, an environmental information around the vehicle based on information detected by the one or more sensors;
• and
• change, by a display controller of the vehicle, a display range of an optical flow to be presented to the driver via a display of the vehicle, on a basis of the environmental information or the fatigue degree,
• wherein in a case where there is no need to secure a view of the driver in accordance with the environmental information and the driver is not in a fatigue state associated with the fatigue degree, the circuitry makes a movement speed of the optical flow faster without changing the display range of the optical flow.

A drive assist device comprising:

• circuitry configured to
• acquire, by a vehicle speed acquirer associated with a vehicle, a vehicle speed;
• estimating, by a fatigue degree estimator of the vehicle, a fatigue degree of a driver of the vehicle based on information detected by one or more sensors associate with the vehicle;
• change, by a display controller of the vehicle, a movement speed or a display range of an optical flow to be presented to a driver via a display of the vehicle, in a case where the vehicle speed falls outside a predetermined range;
• and
• acquire, by the one or more sensors, an environmental information around the vehicle, wherein the circuitry changes the display range of the optical flow to be presented to the driver on a basis of the environmental information or a fatigue degree, and
• wherein in a case where there is no need to secure a view of the driver in accordance with the environmental information and the driver is not in a fatigue state associated with the fatigue degree, the circuitry makes the movement speed of the optical flow faster without changing the display range of the optical flow.