A pointing position detection device is provided which, along with
enabling a human being to perform pointing operation in a natural manner,
can perform detection at high accuracy. The device detects the presence
of a human being from an image photographed by cameras and a position at
which the human being is pointing, and which includes: a section which,
based upon the image, detects a head position of the human being,
including at least distance information; a section which, based upon tile
image, detects a hand position of the human being, including at least
distance information; a section which, based upon the hand position,
calculates a hand tip position and a main axis of the hand; and a section
which detects a pointing direction, based upon the head position, the
hand tip position, and the main axis, wherein the pointing position is
detected based upon the pointing direction.