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I'm just wondering that is there any similar method for separate signal and signal+noise in signal processing like otsu's method set threshold to valley of image histogram? And if there is how can I implement it in Matlab.

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  • $\begingroup$ you are basically looking for a 2 class classifier? Yes, lots of ways to do that. How about Fisher discriminant analysis? or linear discriminant analysis? $\endgroup$ – Atul Ingle Nov 7 '17 at 22:16

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