Use openCV library in visual studio 2012 in the pair of 3-channel RGB image is converted to grayscale images.

cvtcolor\cvtcolor\cvtcolor.cpp
........\........\cvtcolor.vcxproj
........\........\cvtcolor.vcxproj.filters
........\........\Debug\CL.read.1.tlog
........\........\.....\CL.write.1.tlog
........\........\.....\cvtcolor.Build.CppClean.log
........\........\.....\cvtcolor.lastbuildstate
........\........\.....\cvtcolor.log
........\........\.....\cvtcolor.obj
........\........\.....\link-cvtres.read.1.tlog
........\........\.....\link-cvtres.write.1.tlog
........\........\.....\link-rc.read.1.tlog
........\........\.....\link-rc.write.1.tlog
........\........\.....\link.read.1.tlog
........\........\.....\link.write.1.tlog
........\........\.....\vc110.idb
........\........\.....\vc110.pdb
........\........\Gray_Image.jpg
........\........\Lena.jpg
........\cvtcolor.sdf
........\cvtcolor.sln
........\cvtcolor.v11.suo
........\Debug\cvtcolor.exe
........\.....\cvtcolor.ilk
........\.....\cvtcolor.pdb
........\.....\imgEnhancement.exe
........\.....\imgEnhancement.ilk
........\.....\imgEnhancement.pdb
........\imgEnhancement\Debug\CL.read.1.tlog
........\..............\.....\CL.write.1.tlog
........\..............\.....\enhancement.obj
........\..............\.....\imgEnhancement.Build.CppClean.log
........\..............\.....\imgEnhancement.lastbuildstate
........\..............\.....\imgEnhancement.log
........\..............\.....\link-cvtres.read.1.tlog
........\..............\.....\link-cvtres.write.1.tlog
........\..............\.....\link-rc.read.1.tlog
........\..............\.....\link-rc.write.1.tlog
........\..............\.....\link.read.1.tlog
........\..............\.....\link.write.1.tlog
........\..............\.....\vc110.idb
........\..............\.....\vc110.pdb
........\..............\enhancement.cpp
........\..............\imgEnhancement.vcxproj
........\..............\imgEnhancement.vcxproj.filters
........\cvtcolor\Debug
........\imgEnhancement\Debug
........\cvtcolor
........\Debug
........\imgEnhancement
cvtcolor

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