Method of and apparatus for removing color noise based on correlation between color channels

摘要

A method of and apparatus for removing color noise are provided. The apparatus includes a first filtering unit, a subtracting unit, a second filtering unit, and an adding unit. The first filtering unit removes color noise from color data of a first channel among input interpolated color data and outputs filtered color data of the first channel. The subtracting unit calculates a difference between each of input color data of a second channel and a third channel among the input interpolated color data and the filtered color data of the first channel and outputs differential images. The second filtering unit selects an intermediate differential image among the output differential images and previously filtered differential images and outputs filtered differential images. The adding unit adds the filtered color data of the first channel and the filtered differential images and outputs filtered color data of the second channel and the third channel.