Patent ID: 9007494
Filing Date: 2015-04-14
Classification: H04N

Abstract:
1. An image processing apparatus comprising: a noise suppression unit configured to perform noise suppression processing to a plurality of color signals obtained by band dividing an image signal by color; a one-plane conversion unit configured to generate a one-plane image having one signal per pixel, from the plurality of color signals to which the noise suppression processing has been done by said noise suppression unit; a processing unit configured to perform image processing in which a frequency characteristic changes, with respect to the one-plane image; a noise extraction unit configured to extract a noise component from the image signal; and an adding unit configured to add the noise component extracted by said noise extraction unit to a signal obtained by said processing unit, wherein said noise suppression unit comprising: a first noise suppression unit configured to perform the noise suppression processing to the color signal of each color in the plurality of color signals; a first reduction unit configured to reduce a size of the plurality of color signals; a second noise suppression unit configured to perform the noise suppression processing to the plurality of color signals of which the size has been reduced; an enlargement unit configured to enlarge the size of the plurality of color signals to which the noise suppression processing by said second noise suppression unit has been done, to the size before being reduced; and a mixing unit configured to mix, separately for each color, the plurality of color signals output from said first noise suppression unit and the plurality of color signals output from said enlargement unit.