Abstract: A skeletal information threshold setting apparatus includes: a joint information input unit that accepts an input of important joints among joints of a subject and a confidence threshold for the important joints; and a threshold setting unit that acquires a confidence threshold for each of multiple joints of the subject, including the important joints, based on the important joints and the confidence threshold for the important joints that were input, and sets the acquired confidence thresholds for the joints as thresholds to be used in making a determination regarding a skeletal estimation result for the subject.

Abstract: A behavior classifier includes a coordinate estimation unit that receives a plurality of frames in chronological order as an input to estimate a keypoint coordinate group for each of the plurality of frames and to generate a chronological keypoint coordinate group for the plurality of input frames; a matrix generation unit that generates a trajectory matrix and generates a trajectory matrix group in which trajectory matrices are collected for all of keypoints defined for the object; and a behavior classification unit that classifies a behavior of the object based on the trajectory matrix group. Each of the plurality of frames captures an object as a moving image. The keypoint coordinate group is a set of two-dimensional coordinates of a keypoint defined for the object. The chronological keypoint coordinate group is a set of the keypoint coordinate groups arranged in chronological order.

Abstract: A skeletal information threshold setting apparatus includes: a joint information input unit that accepts an input of important joints among joints of a subject and a confidence threshold for the important joints; and a threshold setting unit that acquires a confidence threshold for each of multiple joints of the subject, including the important joints, based on the important joints and the confidence threshold for the important joints that were input, and sets the acquired confidence thresholds for the joints as thresholds to be used in making a determination regarding a skeletal estimation result for the subject.