Finding transmission map of an image.

How to calculate transmission map of an image using standard deviation.

I used the following equation but I didn't get the correct output.

A is airlight.

Answer 1

[Subhadeep Koley]

Hi, it seems that you are trying to calculate transmission map from air-light to perform some kind of haze reduction.

A function named imreducehaze() comes inbuilt starting from MATLAB 2017b. This function returns the Global atmospheric light value value and Transmission Map of an image. The following code might help.

A = imread('yourImage.jpg'); % Read your image

[J,T,L] = imreducehaze(A); % T = Transmission map, L = Global atmospheric light value