Importance

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Abstract

In a body direction estimation device, measured distance values of the upper body of the target, acquired from a ranging sensor, are grouped into one or multiple groups. If the relative angle between the approximate ellipse of the group of the right arm or left arm and the approximate ellipse of the group of the torso is 60-120°, then these are grouped. Further, the approximate ellipse of the upper body is calculated from the measured distance values corresponding to the group that includes the torso, and the minor axis direction of the approximate ellipse of the upper body is set as the direction that the target is facing. Therefore, because arms moving too far away from the torso are differentiated from the group that includes the torso, influence of the arm position of the target is suppressed, enabling estimating the direction that the target is facing.

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First Claim