An image noise reduction method, apparatus, chip, and module device

Abstract

This application discloses an image denoising method, apparatus, chip, and module device. The method includes: acquiring an image to be processed; determining the number N of pyramid layers corresponding to the image to be processed; decomposing the image to be processed into N sub-images of a pyramid structure; performing reconstruction and denoising processing on the M sub-images to obtain an M-layer target image, where M is N-1, the M-layer sub-images are all images in the N sub-images except for the highest layer image, and the lowest layer target image in the M-layer target image is the denoised image of the image to be processed; during the reconstruction of the i-th sub-image, if the width of the (i+1)-th layer target image is greater than a preset threshold, then the i-th layer target image is obtained by reconstruction processing based on the image after slicing the i-th sub-image and the image after slicing the (i+1)-th layer target image, where the i-th layer sub-image is any layer in the M sub-images. Based on the method described in this application, image denoising performance can be guaranteed and image quality can be improved.

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