Description: This code uses OpenCV for image filtering, only need to modify the mask template, you can use Gaussian, PREWITT operator and two-dimensional filtering.
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File list (Check if you may need any files):
cvFilter2D\cvFilter2D.cpp
..........\cvFilter2D.dsp
..........\cvFilter2D.dsw
..........\cvFilter2D.ncb
..........\cvFilter2D.opt
..........\cvFilter2D.plg
..........\Debug\cvFilter2D.exe
..........\.....\cvFilter2D.ilk
..........\.....\cvFilter2D.obj
..........\.....\cvFilter2D.pch
..........\.....\cvFilter2D.pdb
..........\.....\vc60.idb
..........\.....\vc60.pdb
..........\lena.BMP
..........\Debug
cvFilter2D