NL-means algorithm is a good way for grey image denoising on AWN, but it has high cost on the computation. The program here may cost beyond 30s for 256*256 image. Please enter main to launch the code.

NL-MEANS
........\Cameraman256.png
........\example.tif
........\main.m
__MACOSX
........\NL-MEANS
........\........\._main.m
NL-MEANS\NLmeans.m
__MACOSX\NL-MEANS\._NLmeans.m

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