The Opencv select the area of ​ interest is not in the specified rectangle can be any graphic! Selected and then the mask placed into goodfeaturetotrack corner detection of any area.

GrayImageTest\Debug\GrayImageTest.exe
.............\.....\GrayImageTest.ilk
.............\.....\GrayImageTest.pdb
.............\GrayImageTest\AfterExam.jpg
.............\.............\Debug\BuildLog.htm
.............\.............\.....\GrayImageTest.exe.embed.manifest
.............\.............\.....\GrayImageTest.exe.embed.manifest.res
.............\.............\.....\GrayImageTest.exe.intermediate.manifest
.............\.............\.....\GrayImageTest.obj
.............\.............\.....\GrayImageTest.pch
.............\.............\.....\mt.dep
.............\.............\.....\stdafx.obj
.............\.............\.....\vc90.idb
.............\.............\.....\vc90.pdb
.............\.............\GrayImageTest.cpp
.............\.............\GrayImageTest.vcproj
.............\.............\GrayImageTest.vcproj.KJFQ7KMHK5TR2QS.Administrator.user
.............\.............\left03.jpg
.............\.............\ReadMe.txt
.............\.............\sample1.jpg
.............\.............\stdafx.cpp
.............\.............\stdafx.h
.............\.............\targetver.h
.............\GrayImageTest.ncb
.............\GrayImageTest.sln
.............\GrayImageTest.suo
.............\.............\Debug
.............\Debug
.............\GrayImageTest
GrayImageTest

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