Patent ID: 8406547
Filing Date: 2013-03-26
Classification: G06T,H04N

Abstract:
1. A visual processing device, comprising: a surrounding image information extraction portion operable to extract, from a pixel group of a pixel area surrounding a target pixel of an input image, surrounding image information including luminance information of the pixel group; and a visual processing portion including a processor operable to (i) receive a pixel value of the target pixel, (ii) receive the surrounding image information, (iii) obtain a converted pixel value by converting the pixel value of the target pixel, and (iv) output an output image including a group of converted target pixels, such that each target pixel, of the group of converted target pixels, has the converted pixel value, wherein the visual processing portion enhances a local contrast in a predetermined area included in the input image, and wherein, when a ratio of part regions of the predetermined area in which a gradation changes when compared to other part regions in the predetermined area is decreasing, or when a ratio of part regions of the predetermined area in which the gradation does not change when compared to other part regions in the predetermined area is increasing, the visual processing portion weakens a degree for enhancing the local contrast in the predetermined area.