NORMAL INFORMATION GENERATION DEVICE, IMAGE-CAPTURING DEVICE, NORMAL INFORMATION GENERATION METHOD, AND NORMAL INFORMATION GENERATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To robustly acquire plane-normal information for a general subject.SOLUTION: A normal information generation device 104 generates normal information regarding a normal line on the surface of a subject using a captured image acquired by image-capturing the subject. The device has: image acquisition means for acquiring a plurality of first images mutually differing in a light source position relative to the subject and three or more second images mutually different in a polarization state; dividing means 104c for dividing the surface of the subject into areas in accordance with luminance information that changes depending on the light source position that is acquired from the plurality of first images and/or polarization information acquired from the second images; and generation means 104d for selecting, for each divided area divided by the dividing means, information concerning a change in luminance information that corresponds to the light source position and information used to generate normal information among polarization information, and generating the normal information.SELECTED DRAWING: Figure 2