Patent ID: 8489252

Claim:
A speed control apparatus comprising: a gaze point setter that sets a gaze point of a driver of a mobile object; a motion detector that detects motion of an environmental field around the mobile object with respect to the driver of the mobile object; a divergent component calculator that: projects the motion of the environmental field in a coordinate system, the coordinate system being formed by modeling a retina sphere of the driver of the mobile object, and calculates each of divergent components of the projected motion of the environmental field radially expanding from the gaze point; a total calculator that calculates a total of a number of the divergent components of the projected motion of the environmental field, the number of the divergent components being included in a predetermined area containing the gaze point; and a speed controller that controls the speed of the mobile object such that the total of the number of the divergent components of the projected motion of the environmental field is substantially kept constant.