A helpful collection of image processing routines. Some convert between colour spaces and others process the image. Such as converting from RGB to HLS, converting hex colour strings to RGB arrays, colourising an image or producing a threshold limited version of an image, sepia tone an image, return a ranges of colours from one colour to another... and much more besides!Visit publisher site: Image Functions
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I was looking for a way to make sepia images in PHP and stumbled across this site and class... Having downloade it, it does exactl what it says on the tin, quite efficiently. The only drawback I've found is a lack of documentation, although there is a forum dedicated to helping people with this class. On there, I found examples and hints. Overall, an excellent class to have to hand.