Apparatus and method for measuring three-dimensional shape and non-transitory computer-readable storage medium

A first image of an area is detected, to a polymer formed from light and dark areas first light pattern, and an image projected on each region of the light split by the first pattern space coordinate detection patterns have been projected. A second image of the space is detected on the second light pattern having a boundary position between light and dark areas, which is different from that of the first pattern, and an image projected on each region of the light split by the second pattern space coordinate detection patterns have been projected , One of the first image and the second image is selected to perform measuring a three-dimensional shape of an object in space based on the selection screen.