METHOD OF REDUCING NOISE IN IMAGE AND IMAGE PROCESSING APPARATUS USING THE SAME

摘要

Provided are methods and apparatuses for reducing noise in an image, in which a kernel that gives a weight to a pixel value with respect to determination of a similarity between patches is adaptively changed according to a reference patch, a non-transitory computer-readable storage medium for recording the same, and an image processing apparatus using the same, in which noise in an image is removed according to a noise removal algorithm based on non-local means.

主权项

1. A method of reducing noise in an image, the method comprising:
setting a plurality of pixels in the image as a reference patch, and setting target patches in the image corresponding to the reference patch, the reference patch having a center pixel; determining a similarity between the reference patch and the target patches; and removing noise from the center pixel in the reference patch based on pixel values of center pixels in the target patches by applying, via a kernel, a weight to the center pixels of the target patches based on the similarity between the reference patch and the target patches, the kernel being adaptively changed according to the reference patch.