THREE-DIMENSIONAL SHAPE MEASURING APPARATUS AND ROBOT SYSTEM

A three-dimensional shape measuring apparatus according to the embodiment includes an irradiating unit, an imaging unit, a position detector, a changing unit. The irradiating unit applies a slit light beam while changing an irradiation position in an area under measurement. The imaging unit images reflected light of the light beam. The position detector scans an image taken by the imaging unit to detect a position of the light beam on the image. The changing unit changes a position of an imaging area of the imaging unit in accordance with the irradiation position of the light beam.