THREE-DIMENSIONAL IMAGE PROCESSING DEVICE AND THREE-DIMENSIONAL IMAGE PROCESSING METHOD

A three-dimensional image processing device includes: an input unit configured to acquire a first taken image and a second taken image respectively from a first imaging unit and a second imaging unit; and a stereo processing unit configured to execute stereo processing and then outputs a range image, for a common part where an imaging region of the first taken image and an imaging region of the second taken image have an overlap with each other, an imaging direction of the first imaging unit and an imaging direction of the second imaging unit are set toward a horizontal direction, and both side parts of the imaging region of the first imaging unit and both side parts of the imaging region of the second imaging unit are set as common parts.