Resolution adjustable 3D scanner based on using stereo cameras

This paper addresses a stereo-based 3D scanner system, which is able to acquire various resolution range data. The system consists of stereo cameras and one slit laser. In each stereo image pair, we cast one laser stripe on the surface of object, and analyze their disparities for determining their depth values. Utilizing a super-sampling filter, the sub-pixel features are generated for enhancing the native resolution of CCD component. In this system, we use one slit laser for sweeping the surface of objects and generating correspondences under the epipolar constrain. Since the correspondences are generated by the positions of the cast stripes, their resolution is controllable.