Patent ID: 8355597
Filing Date: 2013-01-15
Classification: H04N

Abstract:
1. An image processing device comprising: a gradation conversion processor that performs gradation conversion processing on image data from an image acquisition system based on a gradation conversion characteristic; a noise reduction processor that performs noise reduction processing on the image data; a combining-ratio calculator that calculates a combining ratio between the image data before the noise reduction processing performed by the noise reduction processor and the image data after the noise reduction processing based on of the gradation conversion characteristic; and a combiner that combines the image data before the noise reduction processing performed by the noise reduction processor and the image data after the noise reduction processing based on the combining ratio, wherein the combining-ratio calculator calculates the combining ratio based on image characteristics and the gradation conversion characteristic, wherein the image characteristics include brightness information, edge information, and color information of an image, and wherein the gradation conversion characteristic includes an amplification factor for gradation conversion.