Otsu method is a clustering based image thresholding.It works when the histogram is bimodal.The method basically tries to minimize the within class variance and at the same time it maximizes the between class variance.
Total variance=Within class variance +Between Class Variance.
AliArshad Kothawala (2022). Image Segmentation using Otsu Method (https://www.mathworks.com/matlabcentral/fileexchange/51297-image-segmentation-using-otsu-method), MATLAB Central File Exchange. Retrieved .
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