I\'ve looked around everywhere to no avail. I\'m doing some image loading in a thread and since UIKit i开发者_运维百科s not thread safe I\'m going to have to store the images as CGImageRefs but I can\
So I have an app that gets pixel data from a picture and then manipulates to change brightness levels via R开发者_StackOverflowGB values of each pixel.
I\'m creating a CGImageRef out of, in one case, a TIFF file, through a CGImageSource, in another case raw bitmap data via a CGDataProvider and in another case, from a PDFPage via an NSImage. I need to
I am having an issue using CGBitmapContextCreateImage in my iPhone app. I am using AV Foundation Framework to grab camera frames using this method:
I\'m writing application that operates on black&white images. I\'m doing it by passing a NSImage object into my method and then making NSBitmapImageRep from NSImage. All works but quite slow. Here
In specs, iPhone 4 screen resolution & pixel density * iPhone 4 has a screen resolution of 960×640 pixels, which is twice that of
What I am trying to do (under 10.6).... I have an image (jpeg) that includes an icon in the image file (that is you see an icon based on the image in the file, as opposed to a generic jpeg icon in fi
I\'m loading a grayscale png image and I want to access the underlying pixel data. However after I load get the pixel data via CGImageGetDa开发者_StackOverflow中文版taProvider, the length of the data
I want to create a CGImage with the color information I already have Here is the code for converting the CGImage to CML, CML_color is a matrix structure
I have two image views, one on top of the another, with two different images. As the user t开发者_高级运维ouches the image and moves his/her finger, the top image should become transparent along the t
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