Otsu method is a globally-oriented dynamic binary method, also known Otsu is a gray image binarization commonly used algorithms. The basic idea of the algorithm is: set a threshold value using a grayscale image based on the size of the gray, and the background section is divided into two types of target portion, between these two classes in the minimum variance and the variance of the largest class, I get the threshold is optimal binary threshold value.

Otsu算法(大律法或最大类间方差法).doc

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