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《Journal of Xi'an University of Technology》 2001-01
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A Method of Tuning Focus for Image Measurement Technology

GUO Yan zhen, QIU Zong ming, LI Xin, WANG Ji hui (Xi’an University of Technology,Xi’an 710048,China)  
Based on Newton Optical Formula, this paper suggests a distinction method to distinguish tuning focus in image measurement technology, and introduces the discrimination basis for tuning focus. This discrimination basis is used to obtain the clear image so as to make size measurement more accurate. The method disposed with automatic tuning focus system can make the TV camera track the surface of object realize the non contact measurement of surface shape. The experiment results lndicate that this method can achieve tuning focus fast so that the error of tuning focus repetion is about 6.5 μm.
【CateGory Index】: TH74
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