摘要
提出了一种基于机器视觉和 CAD三维模型的零件自动定位方案 ,利用虚拟图像匹配的方法确定零件在工作台上的位置和方向。在 CAD三维模型中 ,针对零件的可能放置方式通过透视成像的方法形成多幅虚拟图像。CCD产生的实际图像与各幅虚拟图像进行匹配。确定零件坐标系与机器坐标系的关系 ,达到定位目的。最后在三坐标测量机平台上实现了该方法 。
A method for automatic recognition of the position and orientation of parts based on machine vision and CAD 3D model is proposed Virtual image matching is used to confirm the position and orientation of the part By perspective imagery,virtual images of the CAD 3D model are produced according to each pose of the part Real image generated by CCD camera is matched with virtual images of the part The result of matching is used to confirm the relation of the part coordinates and the machine coordinates This method is implemented on 3D coordinate measuring machines Experiments are given to verify the method and its precision is analyzed
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2003年第2期165-170,共6页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金 ( 5 9675 0 83
5 0 0 75 0 64 )资助项目
