A stereo camera device according to one embodiment of the present invention comprises: a light pattern projection unit for projecting a predetermined pattern; a first camera unit for photographing the pattern; a second camera for photographing the pattern; and a control unit for controlling the light pattern projection of the light pattern projection unit, and determining whether to perform rectification between a first image and a second image by analyzing the first image photographed by the first camera unit and the second image photographed by the second camera unit.