Pose estimation apparatus, pose estimation method, and non-transitory computer-readable storage medium

A pose estimation method performed by one or more computers comprising:

• acquiring a target image in which one or more persons are captured;
• detect key-points from the target image;
• computing one or more selection factors based on the key-points, the one or more selection factors including density, resolution, or both of persons in the target image;
• selecting an algorithm for key-point association from predefined algorithms for key-point association based on the one or more selection factors;
• performing key-point association on the key-points using the selected algorithm to divide the key-points into one or more key-point groups each of which includes the key-points of a same person as each other;
• and
• for each of the key-point groups, estimating a pose of the person corresponding to the key-point group based on the key-points included in the key-point group.

A non-transitory computer-readable storage medium storing a program that causes one or more computers to execute:

• acquiring a target image in which one or more persons are captured;
• detect key-points from the target image;
• computing one or more selection factors based on the key-points, the one or more selection factors including density, resolution, or both of persons in the target image;
• selecting an algorithm for key-point association from predefined algorithms for key-point association based on the one or more selection factors;
• performing key-point association on the key-points using the selected algorithm to divide the key-points into one or more key-point groups each of which includes the key-points of a same person as each other;
• and
• for each of the key-point groups, estimating a pose of the person corresponding to the key-point group based on the key-points included in the key-point group.