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Can you give me a starter point for creating an iphone app that recognises colour. I have seen this app http://www.windowsphone.com/en-US/apps/2f83a363-2fce-4107-8394-27feb3645fff and it would be excellent to be able to find out the technique used for the colour recognition part. Thanks.
Probably the easiest way would be to display a
UIImagePickerControllerwith it’s source type set toUIImagePickerControllerSourceTypeCamera. Once the user snaps a photo, you can then get aCGImageof the photo taken, and look for the color info that way. This question might help you with figuring out the color info you want.