How do I get the value of C and ws in adaptive thresholding?

Hello everyone, I need help on how to get the value of C and ws in adaptive thresholidng by Guanglei Xiong

Answer 1

[DGM]

You have to select them based on the image content and your own intent. Refer to the documentation:

https://homepages.inf.ed.ac.uk/rbf/HIPR2/adpthrsh.htm

https://www.mathworks.com/matlabcentral/fileexchange/8647-local-adaptive-thresholding?s_tid=prof_contriblnk

ws is the filter window size (pixels). It's just a scalar. The window size is square.

C is an offset parameter used to avoid thresholding noise in uniform regions where there is no object content within the filter window. It's a scalar in the range [0 1]. It's generally going to be a small value. Note that the examples in the documentation seem to describe numbers on a uint8 [0 255] scale instead of [0 1], as the given implementation uses.