Three dimensional information measurement method and apparatus

摘要

Method and apparatus for measuring three dimensional information of a target placed in an interior space of a rotator type mirror by using the rotator type mirror in combination with an imaging apparatus disposed with its light receiving axis aligned with a center axis of the rotator type mirror. The invention includes projecting reference light toward the rotator type mirror from a position on the center axis, and scanning the target with mirror reflected reference light that is produced by reflecting the reference light on the rotator type mirror. The invention further includes obtaining the three dimensional information of the target, based on a physical quantity corresponding to the projection angle of the reference light and on a physical quantity corresponding to the position of a projected image obtained when the mirror reflected reference light that scanned the target is captured by the imaging apparatus via the rotator type mirror.