Linear digital image correlation with SOBEL or SCHARR operators

【Author】

Wei Tong;Hang Yao;Yue Xuan;

【Abstract】

<正>We study the bias and variability in displacement measurements by a linear digital image correlation algorithm which is widely used for optical flow computation.It is shown that a backward version of the algorithm has no noise-induced bias using a noisefree reference image.The bias due to subpixel approximation

【Keywords】

Linear digital image correlation with SOBEL or SCHARR operators;high;

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