Binary code for intensity levels in gray image using huffmann Algorithm

I want to obtain binary code for each intensity level in a gray image using huffmann algorithm without using inbuilt funtions and hence calculate compression efficiency for the coding. Can someone please help. Thanks in Advance!

[Walter Roberson]

When you Unaccept an answer saying that it did not work for you, then you should describe the difficulty you ran into.

Answer 1

[Walter Roberson]

https://www.google.com/search?q=huffman+file+exchange+site%3Amathworks.com

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/38787-what-can-be-programmed-without-any-built-in-functions?s_tid=srchtitle