Method and system for processing an input image based on a guidance image and weights determined thereform

A system for processing an input image, the input image comprising a plurality of pixels, the system comprising:

• a linear transformation module configured to carry out a linear transformation of pixels of a guidance image in generating a base layer portion and a detail layer portion from the input image;
• a variance determination module configured to determine, for each of the pixels of the guidance image, a variance of the pixel in a surrounding window of pixels;
• and
• a weightage module configured to determine, for each of the pixels of the guidance image, a weight value of the pixel based on the determined variance;
• an input image determination module configured to determine the input image as an initial transmission map of a haze image using the luminance channel of the haze image;
• an atmospheric light module configured to estimate an atmospheric light value in a dark intensity channel of the haze image;
• and
• a haze removal module configured to carry out a haze removal processing of the haze image based on the initial transmission map,
• wherein the pixels are weighted in the linear transformation according to the determined weight value;
• and
• wherein the initial transmission map is determined based on the atmospheric light value.

A non-transitory computer program readable medium having a program recorded thereon, wherein the program is executed to make a computer process an input image, the input image comprising a plurality of pixels, the computer readable medium comprising:

• instructions for generating a base layer portion and a detail layer portion from the input image by carrying out a linear transformation of pixels of a guidance image;
• instructions for determining, for each of the pixels of the guidance image, a variance of the pixel in a surrounding window of pixels;
• and
• instructions for determining, for each of the pixels of the guidance image, a weight value of the pixel based on the determined variance;
• instructions for determining the input image as an initial transmission map of a haze image using the luminance channel of the haze image;
• instructions for estimating an atmospheric light value in a dark intensity channel of the haze image;
• and
• instructions for carrying out a haze removal processing of the haze image based on the initial transmission map;
• wherein the pixels are weighted in the linear transformation according to the determined weight value, and
• wherein the initial transmission map is determined based on the atmospheric light value.