OS2002 画像相関法にルックアップテーブルを用いた3次元変位計測

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  • OS2002 Three Dimensional Displacement Measurement Using Image Correlation Method with LUT

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Three dimensional measurement of displacement with Digital Image Correlation (DIC) method was investigated. Stereo camera method using two CCD cameras was applied for three dimensional measurement. In this method, movement of the images of two cameras was measured for parallel translation of the base plate in the preliminary test and Look-Up Table showing the relation between image movement and three dimensional movement of the base plate was obtained from the preliminary test. Linear equations were also considered to express the LUT between the movement of the images and the actual translation of the base plate and three dimensional displacement of the base plate was obtained by solving the equations inversely. In this method, we used the equations from the preliminary calibration test, we can estimate three dimensional displacement of the object accurately.

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