it performs hybrid median filtering of the matrix A using a NxN box. Hybrid median filtering preserves edges better than a NxN square kernel-based median filter because data from different spatial directions are ranked separately. Three median values are calculated int he NxN box: MR is the median of horizontal and vertical R pixels, and MD is the median of diagonal D pixels. The filtered value is the median of the two median values and the central pixel C: median([MR,MD,C]). For N = 5:
SARATH JV (2021). hmf1(A,n) (https://www.mathworks.com/matlabcentral/fileexchange/65981-hmf1-a-n), MATLAB Central File Exchange. Retrieved .
Inspired by: Hybrid median filtering
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