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Subpixel measurement of correlation algorithms based on a Gaussian spot

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A theoretical study of the general interpolation method is given, and different correlation algorithms based on a Gaussian spot are compared. By using a correlation algorithm combined with general interpolation, we can achieve the best interpolation method for different correlation algorithms. Meanwhile, we find that the best interpolation method is related to the equivalent Gauss width of a Gaussian spot under ideal conditions.

© 2019 Optical Society of America

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