In order to improve the intelligence of CMM for part detection,it was necessary to recognize positions and orientations of parts.A new visual recognition method for positions and orientations of parts was proposed.The new method firstly extracted actual 3D feature informations of parts more comprehensively,and then matched combinations of the 3D features were found in virtual space.Rotation matrix and translation matrix were computed by matched combinations.Finally,the positions and orientations were determ...