IMAGE PROCESSOR, IMAGE PROCESSING METHOD, AND PROCESSOR USED FOR IMAGE PROCESSING

摘要

PROBLEM TO BE SOLVED: To obtain a further clear image by automatically adjusting the contrast or color balance of a digital image obtained by a digital camera or the like.

SOLUTION: In this image processor, a contrast improvement means 12 performs contrast improvement using a human visual model to an input image 1 obtained in an image input means 10. Namely, a contrast improvement quantity VRPij of an object pixel Pij is calculated by relatively comparing a pixel value VPij of the pixel Pij with a weighted average pixel value of pixel values in its peripheral visual field, and a value considered to be valid is extracted therefrom to generate a contrast emphasized image 3. The contrast improvement is performed while solving the density of a highlight part and a shadow part and reducing the influence of illuminating light by adaptively changing the coupling coefficient of the emphasized image 3 and the input image 1 based on edge information of the input image obtained by an edge information detection means 11 and the luminance of the object pixel.

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