Patent ID: 9554104
Date: 2017-01-24
CPC Classifications: G01B,G03B,H04N

Claim:
1. A projection system comprising: a projection apparatus that projects image light indicating image content and pattern light including a pattern image corresponding to information in which projection coordinates in a projection coordinate system are coded; at least one image capture apparatus; and an arithmetic apparatus, wherein the at least one image capture apparatus generates a captured image in an image capture coordinate system by capturing reflection pattern light based on the pattern light projected onto an object from the projection apparatus, wherein the arithmetic apparatus decodes the captured image into projection coordinate information indicating the projection coordinates corresponding to image capture coordinates in the image capture coordinate system, converts the projection coordinate information into information regarding a distance to the object in the projection coordinate system, and determines contents of the image in accordance with the distance information, wherein the pattern light includes first pattern light projected in a first period and second pattern light projected in a second period, wherein the image light includes first image light projected in a third period and second image light projected in a fourth period, wherein the third period is continuous with the first period, the second period is continuous with the third period, and the fourth period is continuous with the second period, wherein the distance information includes first distance information determined on the basis of the first pattern light, wherein the contents of the image include first image content determined on the basis of the first distance information over the third period and the second period, and wherein the second image light indicates the first image content.