active vision system for micro assembly is equipped with a top view camera and a side view camera with a rotational mirror system, such that the viewing direction can be changed freely. The rotational side view helps minimize an occlusion by chan

As PTZ (Pan–Tilt–Zoom) cam-eras are able to obtain multi-view-angle and multi-resolution information, they have received more and more concern in both research and real application. Stereo vision using dual-PTZ-camera system, com-pared with using d