Image denoising using a library of functions

摘要

A method denoises a noisy image by, for each pixel in the noisy image, first constructing a key from a patch, wherein the patch includes locally neighboring pixels around the pixel. A function is selected from a function library using the key. Then, the function is applied to the patch to generate a corresponding noise free pixel for the pixel.

主权项

1. A method for denoising a noisy image, comprising for each pixel in the noisy image steps of:
constructing, for each pixel, a key from a patch, wherein the patch includes locally neighboring pixels around the pixel; selecting a function from a function library using the key, wherein the function is a linear function of intensities of the pixels in the patch, and wherein the key maps the pixel to the function selected from the function library; and applying the function to the patch to generate a corresponding noise free pixel, wherein the steps are performed in a processor.