Patent ID: 7625088

Claim:
An image processing apparatus for stereographically photographing an ocular fundus of a subject's eye with a prescribed parallax via an ocular fundus photographic optical system and performing a three-dimensional shape measurement process using the resulting parallax image, the apparatus comprising: means for stereographically photographing a photographic target having a prescribed shape with a prescribed parallax via the ocular fundus photographic optical system; means for measuring the three-dimensional shape of a prescribed location of said target on the basis of image data derived from the parallax image thereof; and means for producing calibration data for correcting shape distortions caused by the ocular fundus photographic optical system, the calibration data corresponding to a difference between an actual three-dimensional shape of the prescribed location of said target and a three-dimensional shape of the prescribed location thereof that has been measured based on the image data; wherein the calibration data is used in the three-dimensional shape measurement process for shape distortion correction for a three-dimensional shape data obtained by stereo photography of the ocular fundus of the subject's eye.