Safe driving determination apparatus

1 . A safe driving determination apparatus for acquiring an angle value indicating a face direction angle of a driver by using a traveling direction of a vehicle as a reference after capturing an image of the driver of the vehicle with an imaging device to determine whether or not the driver is in a state of being inattentive to a road ahead on a basis of the acquired angle value, the apparatus comprising:

a processor coupled to a memory storing instructions for the processor to execute:

an angle value calculation part that calculates an angle value indicating a face direction angle of at least one of i) a face direction angle of the driver in a yaw direction with respect to the traveling direction or ii) a face direction angle of the driver in a pitch direction with respect to the traveling direction, based on a captured image of the driver generated by the imaging device;

a determination part that determines whether or not the driver is in a state of being inattentive to the road ahead on the basis of whether or not an integrated value of angle values that the angle value calculation part calculates during a past predetermined determination period is equal to or greater than a threshold value;

a road state identification part that identifies a state of a road on which the vehicle is traveling, based on at least one of i) a captured image of a road generated by another imaging device different from the imaging device or ii) road state information which is acquired from an external device; and

an alarm part that notifies an alarm device that includes a speaker for issuing an alarm, a display part for displaying a warning screen, and a vibration generation part for generating vibration, when the alarm part receives a notification that the driver is in the state of being inattentive to the road ahead from the determination part, such that the alarm device activates the speaker for issuing the alarm or the vibration generation part for generating the vibration,

wherein the road state identification part:

i) acquires, from an external device storing road state information that associates a time of day, a location of a road, and a density of people or vehicles within a predetermined range from the vehicle on the road on which the vehicle is traveling as the state of the road, the road state information corresponding to a time at which the vehicle is traveling; and

ii) identifies, as the state of the road, the density associated with a position at which the vehicle is traveling in the acquired road state information, and

wherein the determination part makes a determination period shorter, if the density is equal to or greater than a threshold value, than the determination period in a case where the density is less than the threshold value.

2 . A safe driving determination apparatus for acquiring an angle value indicating a face direction angle of a driver by using a traveling direction of a vehicle as a reference after capturing an image of the driver of the vehicle with an imaging device to determine whether or not the driver is in a state of being inattentive to a road ahead on a basis of the acquired angle value, the apparatus comprising:

a processor coupled to a memory storing instructions for the processor to execute:

an angle value calculation part that calculates an angle value indicating a face direction angle of at least one of i) a face direction angle of the driver in a yaw direction with respect to the traveling direction or ii) a face direction angle of the driver in a pitch direction with respect to the traveling direction, based on a captured image of the driver generated by the imaging device;

a determination part that determines whether or not the driver is in a state of being inattentive to the road ahead on the basis of whether or not an integrated value of angle values that the angle value calculation part calculates during a past predetermined determination period is equal to or greater than a threshold value;

a road state identification part that identifies a state of a road on which the vehicle is traveling, based on at least one of i) a captured image of a road generated by another imaging device different from the imaging device or ii) road state information which is acquired from an external device;

an operation receiving part that receives, from the driver of the vehicle, a setting operation for setting a length of a determination period for each state of the road includes a width of a lane on which the vehicle is traveling, a type of a road, and a density of vehicles or people on the road, which is set by the driver, via an operation screen of an external device; and

an alarm part that notifies an alarm device that includes a speaker for issuing an alarm, a display part for displaying a warning screen, and a vibration generation part for generating vibration, when the alarm part receives a notification that the driver is in the state of being inattentive to the road ahead from the determination part, such that the alarm device activates the speaker for issuing the alarm or the vibration generation part for generating the vibration,

wherein the determination part determines the determination period to be a length indicated by the setting operation received by the operation receiving part associated with the state of the road identified by the road state identification part associated with the state of the road identified by the road state identification part.