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2014/10/15 ¤U¤È 10:11:53
iphone Programming Glossary: m_widthhttp://stackoverflow.com/questions/1298867/convert-image-to-grayscale UIImage convertToGreyscale UIImage i int kRed 1 int kGreen 2 int kBlue 4 int colors kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t.. kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context.. colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate rgbImage m_width m_height 8 m_width 4 colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGContextSetInterpolationQuality..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale it correctly This is the method I use to convert to greyscale. UIImage convertToGreyscale UIImage i int kRed 1 int kGreen 2 int kBlue 4 int colors kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB.. UIImage i int kRed 1 int kGreen 2 int kBlue 4 int colors kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate rgbImage m_width m_height 8 m_width 4.. uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate rgbImage m_width m_height 8 m_width 4 colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGContextSetInterpolationQuality context kCGInterpolationHigh CGContextSetShouldAntialias..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale convert to greyscale. UIImage convertToGreyscale UIImage i int kRed 1 int kGreen 2 int kBlue 4 int colors kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef.. 2 int kBlue 4 int colors kGreen int m_width i.size.width int m_height i.size.height uint32_t rgbImage uint32_t malloc m_width m_height sizeof uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate.. uint32_t CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate rgbImage m_width m_height 8 m_width 4 colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGContextSetInterpolationQuality context..
IOSurfaces - Artefacts in video and unable to grab video surfaces http://stackoverflow.com/questions/14135215/iosurfaces-artefacts-in-video-and-unable-to-grab-video-surfaces aseed uint32_t width IOSurfaceGetWidth screenSurface uint32_t height IOSurfaceGetHeight screenSurface m_width width m_height height CFMutableDictionaryRef dict int pitch width 4 size width height 4 int bPE 4 char pixelFormat 4 'A'..
How to crop the image in iPhone http://stackoverflow.com/questions/7950719/how-to-crop-the-image-in-iphone you can just copy from any range of pixels of old image you need to new one UIImage Color UIImage img int R float m_width img.size.width float m_height img.size.height if m_width m_height R m_height 0.9 else R m_width 0.9 int m_wint int m_width.. you need to new one UIImage Color UIImage img int R float m_width img.size.width float m_height img.size.height if m_width m_height R m_height 0.9 else R m_width 0.9 int m_wint int m_width later we will need this parameters in float and int. you.. img int R float m_width img.size.width float m_height img.size.height if m_width m_height R m_height 0.9 else R m_width 0.9 int m_wint int m_width later we will need this parameters in float and int. you may just use int and float before variables..
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