Hi all, I'm developing an image editing application for iphone. I've seen many questions similar to mine, but couldn't find a relevent answer. I have generated the pixel data as,
NSData* pixelData = (NSData*)CGDataProviderCopyData(CGImageGetDataProvider(originalImage.CGImage));
Now, i need to get the component values (alpha,R,G,B) from this. How can i do that? Also i need to modify these components and write it to the image. What is the method to implement that?? pls help...