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2014/10/15 ¤U¤È 10:05:04

iphone Programming Glossary: cgimagecreate

How to change thin image to fat image in iPhone SDK?

http://stackoverflow.com/questions/10186200/how-to-change-thin-image-to-fat-image-in-iphone-sdk

imageRef CGDataProviderRef provider CGDataProviderCreateWithData NULL pixels data length NULL CGImageRef newImageRef CGImageCreate width height bitsPerComponent bitsPerPixel bytesPerRow colorspace bitmapInfo provider NULL false kCGRenderingIntentDefault..

OpenCV install in xcode

http://stackoverflow.com/questions/12214273/opencv-install-in-xcode

CGDataProviderRef provider CGDataProviderCreateWithCFData __bridge CFDataRef data CGImageRef imageRef CGImageCreate cvMat.cols cvMat.rows 8 8 cvMat.elemSize cvMat.step 0 colorSpace kCGImageAlphaNone kCGBitmapByteOrderDefault provider NULL..

Can I edit the pixels of the UIImage's property CGImage

http://stackoverflow.com/questions/1281210/can-i-edit-the-pixels-of-the-uiimages-property-cgimage

fastest way to draw a screen buffer on the iphone

http://stackoverflow.com/questions/2395650/fastest-way-to-draw-a-screen-buffer-on-the-iphone

dataProvider CGDataProviderCreateDirect imageData imageDataSize providerCallbacks currently global cgIm CGImageCreate 320 480 8 32 320 4 colorSpace kCGImageAlphaNone kCGBitmapByteOrder32Little dataProvider 0 false kCGRenderingIntentDefault.. is to create a new image and bind it to the layer... CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB cgIm CGImageCreate 320 480 8 32 320 4 colorSpace kCGImageAlphaNone kCGBitmapByteOrder32Little dataProvider 0 false kCGRenderingIntentDefault..

Extracting images from a PDF

http://stackoverflow.com/questions/2475450/extracting-images-from-a-pdf

if rowBits 8 0 rowBytes maskImage SMaskImageFromImageDictionary dict if format CGPDFDataFormatRaw sourceImage CGImageCreate width height bps bps spp rowBytes cgColorSpace 0 dataProvider decodeValues interpolation renderingIntent CGDataProviderRelease.. interpolation renderingIntent CGDataProviderRelease dataProvider cgImage sourceImage if maskImage NULL cgImage CGImageCreateWithMask sourceImage maskImage CGImageRelease sourceImage CGImageRelease maskImage else cgImage sourceImage else if format.. sourceImage else if format CGPDFDataFormatJPEGEncoded JPEG data requires a CGImage AppKit can't decode it sourceImage CGImageCreateWithJPEGDataProvider dataProvider decodeValues interpolation renderingIntent CGDataProviderRelease dataProvider cgImage sourceImage..

How to erase part of an image as the user touches it

http://stackoverflow.com/questions/2978382/how-to-erase-part-of-an-image-as-the-user-touches-it

length image imageSize CGDataProviderRef provider CGDataProviderCreateWithCFData CFDataRef data CGImageRef imageRef CGImageCreate image width image height image depth image depth image nChannels image widthStep colorSpace kCGImageAlphaPremultipliedLast..

UIImage - implementing an auto levels algorithm

http://stackoverflow.com/questions/3278560/uiimage-implementing-an-auto-levels-algorithm

no gamma etc. const CGFloat decode 6 blackPoint whitePoint blackPoint whitePoint blackPoint whitePoint decodedImage CGImageCreate CGImageGetWidth origImage CGImageGetHeight origImage CGImageGetBitsPerComponent origImage CGImageGetBitsPerPixel origImage..

Image processing Glamour filter in iphone

http://stackoverflow.com/questions/3549396/image-processing-glamour-filter-in-iphone

kCGBitmapByteOrderDefault CGColorRenderingIntent renderingIntent kCGRenderingIntentDefault CGImageRef imageRef CGImageCreate width height bitsPerComponent bitsPerPixel bytesPerRow colorSpaceRef bitmapInfo provider2 NULL NO renderingIntent CGColorSpaceRelease..

Creating UIImage from raw RGBA data

http://stackoverflow.com/questions/4545237/creating-uiimage-from-raw-rgba-data

kCGBitmapByteOrderDefault CGColorRenderingIntent renderingIntent kCGRenderingIntentDefault CGImageRef imageRef CGImageCreate width height 8 32 4 width colorSpaceRef bitmapInfo provider NULL NO renderingIntent I get the current dimensions..

How do I perform a fast pixellation filter on an image?

http://stackoverflow.com/questions/5049041/how-do-i-perform-a-fast-pixellation-filter-on-an-image

too long. This is how I am doing it CGDataProviderRef dataProvider CGProviderCrateWithData ..... CGImageRef cgImage CGImageCreate .... imageView setImage UIImage imageWithCGImage cgImage Everything is working but it's very slow to process a large image...

How to draw a color wheel in objective-c

http://stackoverflow.com/questions/5108921/how-to-draw-a-color-wheel-in-objective-c

CGDataProviderCreateWithCFData data CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGImageRef imageRef CGImageCreate width height 8 32 width 4 colorSpace kCGImageAlphaLast dataProvider NULL 0 kCGRenderingIntentDefault UIImage image UIImage..

How to implement alpha gradient on a image?

http://stackoverflow.com/questions/5908731/how-to-implement-alpha-gradient-on-a-image

Any advice tutorial link is welcome. iphone ios gradient alpha quartz 2d share improve this question You can use CGImageCreateWithMask to apply a masking image to it. You could generate an appropriate mask simply enough by drawing to a greyscale or.. is again your friend. Then of course get the image out of the CGContext using CGBitmapContextCreateImage or CGImageCreate on the underlying data buffer. Or of course if you control the original image and never need a version without the alpha..

How to make one color transparent on a UIImage?

http://stackoverflow.com/questions/633722/how-to-make-one-color-transparent-on-a-uiimage

@ leaf.png CGImageRef ref1 self createMask temp23 const float colorMasking 6 1.0 2.0 1.0 1.0 1.0 1.0 CGImageRef New CGImageCreateWithMaskingColors ref1 colorMasking UIImage resultedimage UIImage imageWithCGImage New CGImageRef createMask UIImage temp.. CGDataProviderRef provider CGDataProviderCreateWithData NULL bufferdata mWidth mHeight 4 NULL CGImageRef savedimageref CGImageCreate mWidth mHeight 8 32 mWidth 4 colorSpaceRef bitmapInfo provider NULL NO renderingIntent CFRelease colorSpaceRef return savedimageref..

Create image from RGB data?

http://stackoverflow.com/questions/7235991/create-image-from-rgb-data

to display it as an image on the iphone but can't find out how to do it. Can anyone help I think i might need to use CGImageCreate but just don't get it. Tried looking at the class reference and am feeling quite stuck. All I want is a 10x10 greyscale..

iPhone take augmented reality screenshot with AVCaptureVideoPreviewLayer

http://stackoverflow.com/questions/8980847/iphone-take-augmented-reality-screenshot-with-avcapturevideopreviewlayer

CGFloat 0.0 CGFloat 0.0 glImage.size.width glImage.scale glImage.size.height glImage.scale CGImageRef overlayCopy CGImageCreateCopy overlayImage.CGImage CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate.. 0.0 CGFloat 0.0 viewImage.size.width viewImage.scale viewImage.size.height viewImage.scale CGImageRef overlayCopy CGImageCreateCopy overlayImage.CGImage CGColorSpaceRef colorSpace CGColorSpaceCreateDeviceRGB CGContextRef context CGBitmapContextCreate.. NULL data dataLength NULL CGColorSpaceRef colorspace CGColorSpaceCreateDeviceRGB CGImageRef iref CGImageCreate width height 8 32 width 4 colorspace kCGBitmapByteOrder32Big kCGImageAlphaPremultipliedLast ref NULL true kCGRenderingIntentDefault..

Dispelling the UIImage imageNamed: FUD

http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud

CGDataProviderRef imageDataProvider CGDataProviderCreateWithCFData imageData CFRelease imageData CGImageRef image CGImageCreate CGImageGetWidth originalImage CGImageGetHeight originalImage CGImageGetBitsPerComponent originalImage CGImageGetBitsPerPixel..

Capturing EAGLview content WITH alpha channel on iPhone

http://stackoverflow.com/questions/962390/capturing-eaglview-content-with-alpha-channel-on-iphone

GL_UNSIGNED_BYTE buffer CGDataProviderRef ref CGDataProviderCreateWithData NULL buffer 320 480 4 NULL CGImageRef iref CGImageCreate 320 480 8 32 320 4 CGColorSpaceCreateDeviceRGB kCGBitmapByteOrderDefault ref NULL true kCGRenderingIntentDefault size_t..

Saving imageRef from GLPaint creates completely black image

http://stackoverflow.com/questions/9857912/saving-imageref-from-glpaint-creates-completely-black-image

CGColorRenderingIntent renderingIntent kCGRenderingIntentDefault make the cgimage CGImageRef imageRef CGImageCreate w s h s bitsPerComponent bitsPerPixel bytesPerRow colorSpaceRef bitmapInfo provider NULL NO renderingIntent then make the..