Generally corresponds to the edge of gray areas have mutations, that is, high frequency components. Gray-scale mutations can be detected through the derivation. Common gray-scale mutations include: ladder-like, pulse shape, the roof-shaped

ImageTest
.........\Bmp.cpp
.........\Bmp.h
.........\ChildFrm.cpp
.........\ChildFrm.h
.........\data




.........\filter
.........\......\Filter.cpp
.........\......\Filter.h
.........\......\FilterAverage.cpp
.........\......\FilterAverage.h
.........\......\FilterDFT.cpp
.........\......\FilterDFT.h
.........\......\FilterFFT.cpp
.........\......\FilterFFT.h
.........\......\FilterHistoEqualize.cpp
.........\......\FilterHistoEqualize.h
.........\......\filterlaplacian.cpp
.........\......\FilterLaplacian.h
.........\......\FilterMedian.cpp
.........\......\FilterMedian.h
.........\......\filterprewitt.cpp
.........\......\filterprewitt.h
.........\......\filterroberts.cpp
.........\......\filterroberts.h
.........\......\FilterSobel.cpp
.........\......\FilterSobel.h
.........\FilterInclude.h
.........\ImageTest.aps
.........\ImageTest.clw
.........\ImageTest.cpp
.........\ImageTest.dsp
.........\ImageTest.dsw
.........\ImageTest.h
.........\ImageTest.ncb
.........\ImageTest.opt
.........\ImageTest.plg
.........\ImageTest.rc
.........\ImageTestDoc.cpp
.........\ImageTestDoc.h
.........\ImageTestView.cpp
.........\ImageTestView.h
.........\log.txt
.........\MainFrm.cpp
.........\MainFrm.h
.........\ReadMe.txt
.........\res

.........\...\ImageTest.rc2


.........\Resource.h
.........\StdAfx.cpp
.........\StdAfx.h

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