An information processing apparatus includes at least one projection unit configured to project a light pattern on a measuring target object, at least one imaging unit configured to capture an image of the measuring target object with the light pattern projected thereon, a measurement unit configured to measure a distance from the at least one projection unit or imaging unit to the measuring target object based on the image captured by the at least one imaging unit, a determination unit configured to determine whether a measured distance is valid, and a control unit configured to reduce luminance of a light pattern, included in a projected light pattern, which is projected on an area with respect to which the measured distance is determined by the determination unit to be valid.