driectshow亮度控制

在directshow的基础上实现对视频源亮度的调解，以更好的适应不同的环境，经过测试有一定的效果。特别是在光线叫暗淡的环境下能够获取较高亮度的图片。

camerads
_UpgradeReport_Files
ipch
DirectShow
Debug
CameraDS.cpp
camerads.dsp
camerads.dsw
CameraDS.h
camerads.ncb
camerads.opt
camerads.plg
camerads.sln
camerads.sln.old
camerads.suo
camerads.suo.old
camerads.vcproj
camerads.vcproj.PC0669.Administrator.user
camerads.vcxproj
camerads.vcxproj.filters
camerads.vcxproj.user
cv.lib
cv100.dll
cv200.dll
cxcore.lib
cxcore100.dll
highgui.lib
highgui100.dll
libguide40.dll
main.cpp
opencv_core243d.dll
opencv_highgui243d.dll
UpgradeLog.XML
xEyeEngine.dll
xEyeMsgEngine.dll