1. An information processing apparatus, comprising: circuitry configured to: obtain, using an imaging device, an image of at least a part of a human subject; estimate a position of a joint of the human subject based on the obtained image, the joint being a place at which two parts of the human subject are joined; output, using a plurality of points and lines indicative of the estimated position of the joint, data indicative of the estimated position of the joint of the human subject as an estimation result; and estimate a posture of the human subject based on the output data.