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Ways to Refine the Indication Error of Video-Measurement System

Yao Jingjing Miao Huaqing Zhan Na(Shenzhen Academy of Metrology and Quality Inspection, Shenzhen 518055)  
In the paper, the author discussed the reasons and category of the indication error of Video-MeasurementSystem, and introduced two simple methods to refine the linear error: linking-both-ends method and least-squaresmethod simultaneously. The author demonstrated to prejudge the adjust ability of the instrument with two methods andtheir odds in detail.
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