Patent ID: 8274646

Claim:
A measurement system comprising: an irradiation unit configured to irradiate a measurement target with predetermined pattern light at a predetermined incident angle; a reception unit configured to receive, at a reflection angle substantially equal to the incident angle, reflected light of the pattern light irradiating the measurement target; a first extraction unit configured to extract information about a surface shape of the measurement target in a region irradiated with the pattern light, based on a shift amount between a light receiving position of the reflected light received by said reception unit, and a predetermined reference position; a second extraction unit configured to extract, as information about a scattering characteristic of the measurement target in the region irradiated with the pattern light, information about a luminance value of the reflected light received by said reception unit, and information indicating a spread of the pattern light upon reflection by the measurement target; and a control unit configured to control the pattern light emitted by said irradiation unit to have an interval at which outer edges of adjacent patterns are in contact with each other in an image obtained by receiving the reflected light by said reception unit on the basis of the information about the scattering characteristic of the measurement target that is extracted by said second extraction unit.