Image denoising method and device

The embodiment of the invention discloses an image denoising method and device. The method comprises the steps of determining a denoising adjacent region and a reference adjacent region from a Bayer template image; on the basis of color components of a center pixel point, obtaining a first RGB color component value in the denoising adjacent region and a second RGB color component value in the reference adjacent region; on the basis of the color components of the center pixel point, conducting zooming processing on the first RGB color component value to obtain a first set of RGB color vectors, and conducting zooming processing on the second RGB color component value to obtain a second set of RGB color vectors; on the basis of the first set of RGB color vectors and the second set of RGB color vectors, obtaining a smoothing weight of the reference adjacent region relative to the denoising adjacent region; on the basis of the smoothing weight, conducting denoising processing on the denoising adjacent region.