Patent ID: 7372580

Claim:
A three-dimensional shape detecting system comprising a three-dimensional shape detecting device and an external calculating device, wherein: the three-dimensional shape detecting device includes: a projector which projects pattern light onto a subject; an image data obtaining unit which captures a pattern light projection image of the subject on which the pattern light is projected by the projector and thereby obtains image data of the pattern light projection image, while capturing a pattern light non-projection image of the subject on which the pattern light is not projected and thereby obtaining image data of the pattern light non-projection image; a pattern light position extraction unit which extracts a position of the pattern light projected on the subject based on the obtained image data; and a three-dimensional shape calculation unit which figures out three-dimensional shape data of the subject based on the position of the pattern light extracted by the pattern light position extraction unit, and the external calculating device includes an image correction unit which corrects the pattern light non-projection image into a plane image in which the subject is observed from a direction substantially orthogonal to a prescribed surface of the subject based on the image data of the pattern light non-projection image and the three-dimensional shape data obtained by the three-dimensional shape detecting device.