Histogram Equalization with HSV

clear all;
close all;
clc;
A=imread('yourimage.type');%fill here

% Convert to HSV

Ahsv=rgb2hsv(A);

% Since hsv include information about brightness
%in the third channel, we will take the third channel and perform
%equalization and we will see how this affect the image itself

Abright=Ahsv(:,:,3);

    Aeqbright=histeq(Abright);
    Ahsv(:,:,3)=Aeqbright;
    Anew=hsv2rgb(Ahsv);
    figure(3);
    subplot(121)
    imshow(A) ,title('original image');
    subplot(122)
    imshow(Anew),title('After Equalization');