Patent ID: 9542730
Date: 2017-01-10
CPC Classifications: G06T,H04N

Claim:
1. An image processing device comprising: an image obtaining unit configured to obtain a Bayer image in a Bayer array constituted by first rows in each of which red and green pixels are alternately arranged in a horizontal direction and second rows in each of which green and blue pixels are alternately arranged in the horizontal direction, the first rows and the second rows being alternately arranged in a vertical direction; a first frequency decomposing unit configured to decompose the Bayer image, with respect to each of the vertical direction and the horizontal direction, into a low frequency component representing brightness information and a high frequency component representing color information, thereby to generate a plurality of subimages; a second frequency decomposing unit configured to perform one-level or multiple-level frequency decomposition on each of the subimages generated by the first frequency decomposing unit with respect to each of the vertical direction and the horizontal direction and thereby further decomposing each of the subimages into subimages having different frequency bands; an image processing unit configured to perform at least one of the following processes for image processing of (i) a characteristic amount computation process of computing the amount of characteristic of the Bayer image based on the subimages obtained through frequency decomposition by the second frequency decomposing unit, (ii) a correcting process on one or more of the subimages obtained through the frequency decomposition, and (iii) a set of information compression and information decompression processes on one or more of the subimages obtained through the frequency decomposition, in such a manner that processing details of the at least one of the processes for the high frequency component are different from those for the low frequency component; and first and second decomposed image combining units configured to combine the subimages having been generated by the first and second frequency decomposing units and processed by the image processing unit, to regenerate a single Bayer image.