Using the current frame image and the background image corresponding to the difference between the pixel gray vehicle is detected. If the current pixel and the background image pixel gray value difference image is large, the pixel is considered by car contrary, if the current pixel and the background image pixel gray value image the difference is small, in a certain threshold range, we believe that this pixel background pixel.

Opencv运动目标检测--背景相减法
..............................\CBitmapEx.cpp
..............................\CBitmapEx.h
..............................\Debug
..............................\.....\StdAfx.obj
..............................\.....\StdAfx.sbr
..............................\.....\aa.bsc
..............................\.....\aa.exe
..............................\.....\aa.ilk
..............................\.....\aa.obj
..............................\.....\aa.pch
..............................\.....\aa.pdb
..............................\.....\aa.res
..............................\.....\aa.sbr
..............................\.....\aaDlg.obj
..............................\.....\aaDlg.sbr
..............................\.....\cvapp.obj
..............................\.....\cvapp.sbr
..............................\.....\vc60.idb
..............................\.....\vc60.pdb
..............................\.....\vision.obj
..............................\.....\vision.sbr
..............................\Ipl2DIB.cpp
..............................\Ipl2DIB.h
..............................\ReadMe.txt
..............................\StdAfx.cpp
..............................\StdAfx.h
..............................\aa.aps
..............................\aa.clw
..............................\aa.cpp
..............................\aa.dsp
..............................\aa.dsw
..............................\aa.h
..............................\aa.ncb
..............................\aa.opt
..............................\aa.plg
..............................\aa.rc
..............................\cdib.cpp
..............................\cdib.h
..............................\cvapp.cpp
..............................\cvapp.h
..............................\res
..............................\...\aa.ico
..............................\...\aa.rc2
..............................\resource.h
..............................\vision.cpp
..............................\vision.h

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