Tiptoe position estimating device and fingertip position estimating device

A tiptoe position estimating device, comprising:

• a camera configured to capture an image of an interior of a vehicle;
• and
• a human body information acquisition unit configured to acquire, from a captured image obtained by capturing an image of a person seated on a seat in the interior by the camera, position information of skeleton points at a plurality of positions of a body of the person, the position information including coordinates of a plurality of joint positions of the body as the skeleton points by image processing wherein
• the human body information acquisition unit is configured to acquire thigh information which is position information of a skeleton point of a thigh of the person from the captured image, and lower leg information which is position information of a skeleton point of a lower leg of the person from the captured image, and
• the human body information acquisition unit includes a tiptoe position estimating part configured to estimate a tiptoe position of a foot of the person based on the acquired thigh information and the acquired lower leg information, the tiptoe position being coordinates separated by a foot length from coordinates of a skeleton point at an ankle joint position.