IMAGE PROCESSING APPARATUS

摘要

An image processing apparatus comprises: a separation unit configured to separate image data into a luminance signal and a color difference signal; a decision unit configured to decide a reference pixel, which is referenced for a pixel of interest included in the image data; a luminance noise reduction unit configured to reduce luminance noise in the luminance signal of the image data; a weight calculation unit configured to calculate a weight of the reference pixel based on similarity of luminance included in the luminance signal having been subjected to noise reduction by the luminance noise reduction unit between a first area containing the pixel of interest and a second area containing the reference pixel; and a color noise reduction unit configured to reduce color noise in the color difference signal for the pixel of interest by using the weight of the reference pixel.

主权项

1. An image processing apparatus comprising:
a separation unit configured to separate image data into a luminance signal and a color difference signal; a decision unit configured to decide a reference pixel, which is referenced for a pixel of interest included in the image data; a luminance noise reduction unit configured to reduce luminance noise in the luminance signal of the image data; weight calculation unit configured to calculate a weight of the reference pixel based on similarity of luminance included in the luminance signal having been subjected to noise reduction in the luminance noise reduction unit between a first area containing the pixel of interest and a second area containing the reference pixel; and a color noise reduction unit configured to reduce color noise in the color difference signal for the pixel of interest by using the weight of the reference pixel.