A method of detecting sky in a digital color image having pixels is disclosed. The method includes identifying pixels from the digital color image representing an initial sky region; developing a model based on the identified sky pixels, wherein such model is a mathematical function that has inputs of pixel position and outputs of color; and using the model to operate on the digital color image to classify additional pixels not included in the initial sky region as sky.

 
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< Processing raw and pre-processed digital images

> Processor and processing method for an image signal, image display apparatus, generation apparatus and generation method for coefficient data used therein, program for executing each of these methods, and computer-readable medium recording the program

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