The Research on Autofocus System of Miniature Five-coordinate Image Measuring Machine
In order to meet the high-precision measurement requirement of tested objects with tiny dimension and complex shape,a miniature five-coordinate image measuring machine,which contains three translational axes and two rotational axes,is designed and built.This machine can inspect the objects from multi-orientation and multi-posture in non-contact way.As an indispensable step of image measurement,the autofocus effect has a direct influence on the following image quality and measurement accuracy.In this paper,the composition and working principle of autofocus system are presented and discussed.Meanwhile,the path planning method for autofocus system is introduced and an autofocus method based on evaluation function of mean square deviation is proposed and discussed in detail.Finally,the experiments demonstrate the effectiveness of the method and the accuracy of autofocus system.
Five-coordinate measuring machine Autofocus Algorithm Image measurement Path planning
Gang Luo Zhiyuan Chen Zhigen Fei
Henan Technical College of Construction, Zhengzhou,Henan,450064, China Mechanical & Electrical Engineering Department Zhengzhou University of LightIndustry, Zhengzhou, Hen
国际会议
台湾
英文
1286-1290
2011-12-11（万方平台首次上网日期，不代表论文的发表时间）