Noise reduction apparatus, noise reduction method and computer program

Abstract

According to an aspect of the present invention, there is provided a noise reducing device including: a provisional image reconstructing unit that generates a provisional image by reconstructing an encoded image obtained through compressed spectral imaging; a similar patch search unit that acquires a plurality of similar provisional patches that are small regions including images similar to each other in the provisional image; a group generating unit that acquires a plurality of similar encoded patches that are small regions including images similar to each other in the encoded image based on information on positions where the similar provisional patches have been acquired; a low-rank approximation unit that performs low-rank approximation based on the plurality of similar encoded patches to acquire a patch in which noise on an image has been reduced in a region included in the similar encoded patches; and a patch integrating unit that generates an encoded image by integrating a plurality of patches in which noise has been reduced, depending on information on positions of the patches.

Dependencies are inferred from the claim text.