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2014/10/15 ¤U¤È 10:13:29
iphone Programming Glossary: rgbpixelhttp://stackoverflow.com/questions/1298867/convert-image-to-grayscale uint8_t m_imageData uint8_t malloc m_width m_height for int y 0 y m_height y for int x 0 x m_width x uint32_t rgbPixel rgbImage y m_width x uint32_t sum 0 count 0 if colors kRed sum rgbPixel 24 255 count if colors kGreen sum rgbPixel 16 255.. y m_height y for int x 0 x m_width x uint32_t rgbPixel rgbImage y m_width x uint32_t sum 0 count 0 if colors kRed sum rgbPixel 24 255 count if colors kGreen sum rgbPixel 16 255 count if colors kBlue sum rgbPixel 8 255 count m_imageData y m_width.. rgbPixel rgbImage y m_width x uint32_t sum 0 count 0 if colors kRed sum rgbPixel 24 255 count if colors kGreen sum rgbPixel 16 255 count if colors kBlue sum rgbPixel 8 255 count m_imageData y m_width x sum count free rgbImage convert from a..
How to crop the image in iPhone http://stackoverflow.com/questions/7950719/how-to-crop-the-image-in-iphone x new m_wint here float fx x double xx m_width asin m_width 2 R asin m_width 2 fx R 2 asin m_width 2 R uint32_t rgbPixel rgbImage int yy m_wint int xx int intRedSource rgbPixel 24 255 int intGreenSource rgbPixel 16 255 int intBlueSource rgbPixel.. m_width 2 R asin m_width 2 fx R 2 asin m_width 2 R uint32_t rgbPixel rgbImage int yy m_wint int xx int intRedSource rgbPixel 24 255 int intGreenSource rgbPixel 16 255 int intBlueSource rgbPixel 8 255 result y int m_wint x 4 0 result y int m_wint.. asin m_width 2 R uint32_t rgbPixel rgbImage int yy m_wint int xx int intRedSource rgbPixel 24 255 int intGreenSource rgbPixel 16 255 int intBlueSource rgbPixel 8 255 result y int m_wint x 4 0 result y int m_wint x 4 1 intBlueSource result y int m_wint..
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