Patent Document ID: 9639915
Application ID: 13961973
Patent Status: 1

Claim One:
1. An image processing method comprising, using one or more processors: configuring a noise reduction filter for each pixel in an image based on a linear noise model of the image, wherein the linear noise model of the image is based on a predetermined distance range of pixels surrounding a target pixel and on a weighted intensity of each of the pixels surrounding the target pixel, and wherein the weighted intensity of each of the pixels surrounding the target pixel is based on a distance between each of the pixels and the target pixel; and applying the noise reduction filter on each pixel in an image to obtain a noise reduced image, wherein the noise reduction filter is proportional to multiplication of an intensity of the target pixel and a first coefficient calculated based on the pixel set comprising pixels in a region of a predetermined size around the target pixel and based on a difference of squares between an intensity of one of the pixels and an average of intensities of the pixels summed over the pixels, divided by a number of the pixels in the pixel set, and divided by a sum of a dispersion of the intensities of the pixels and a normalized variable.