An avoidance-behavior detection device (100) having: an estimation unit (101) for estimating the level of congestion of people in a plurality of sectional areas in a target image; and a detection unit (102) for detecting the avoidance behavior of a person by using the state of distribution of the congestion levels estimated by the estimation unit (101), and the changes over time thereof.
AVOIDANCE-BEHAVIOR DETECTION DEVICE, AVOIDANCE-REASON PROCESSING DEVICE, AND METHODS FOR SAME