histogram and histogram equalization of an image without using built-in functions

dear friends and community i need a program to generate histogram and histogram equalization of an image without using built-in functions such as imhist() and histeq()....... I hope you will help

[Muhammad Ghani]

Have you found the code of histo equalization ??

[Mohga Emam]

hey Muhammad, here's my code for histogram equalization without built in function!

https://github.com/MohgaSolimanEmam/Image-Processing/blob/master/histogram_equalization_without_histeq

Answer 1

[Image Analyst]

You can find my implementation of exact histogram equalization and specification here:

http://www.mathworks.com/matlabcentral/fileexchange/28972-custom-shaped-histogram

Though my uploaded screenshot doesn't show it, you can do a perfectly flat histogram also, or any other shape you desire.

Answer 2

[Jurgen]

I gave an example here: http://www.mathworks.com/matlabcentral/answers/23228-i-want-to-know-if-we-can-implement-histogram-equalization-without-the-histeq-function

Hope it helps.

Answer 3

[Mohga Emam]

hey polana, here's my answer

https://github.com/MohgaSolimanEmam/Image-Processing/blob/master/histogram_equalization_without_histeq