??VC++6.0 MFC??????

???????AppWizard?????????MFC??????????ImageProcessing?

????????????File????Open??????BMP???

????????ImageProcessingView.cpp???ShowBitmap?????LoadImage??????????StretchBlt???????????

??????????OnFileOpen??????FileDialog?????????????ShowBitmap???????

??????OnDraw??????????????.bmp??????ShowBitmap???????

???????????ImageProcessingView.h?????????????????????????????????????ReadBmp?SaveBmp???

????????ReadBmp??????fread????BMP?????????????????????????????????????

????????SaveBmp??????fwrite?????????????????????????????

????????OnDraw??????ReadBmp????????????ShowBitmap???????

??????????ImageProcessingView.h?????????ConvertGray???OnDraw?????????

????????ConvertGray???????????????????????????????

• ????????Gray = 0.299 * R + 0.587 * G + 0.144 * B
• ????????Gray = (R + G + B) / 3
• ?????Gray = (R * 28 + G * 151 + B * 77) >> 8

????????OnDraw????????????????????????????????

??????????????????????Level 2?Level 4?Level 8????????????????

??????????OnLh2?OnLh4?????????????????????????Level 2????????????Level 4???????

????????OnDraw???????????????????????????????????

?????????????????????????????????

????????OnCy????????????????????????????????

• ????????????
• ??????????

????????OnDraw???????????????????????????????????