Code is intended to just explain the principle of SPIHT, Arithmetic Coding not Used in this Code, please refer the famous paper of Dr. Said and Dr. Perlman.

Insructions:


Works only for 128 x 128 images, u have to generalize :)

1. Run lookup_128.m this will generate indices.mat / name the file generated by it as indices.mat
2. Use a image lena.mat, .. get it from net i guess lot of people give it .. else use any image from matlab and name it as lena.mat or change name in code .....
3. Run Spiht_main_encode.m
4. Decode using spiht_main_decode.m


Have patience, code runs a bit slow vector processing applied in most f the places but can still be optimized.

Output data is written on screen (Matlab) details like psnr, mse etc are given go through the code ... comments are not much written, please go through the paper for details. Some customizations have been performed.

Thanks,

Please feel free to contact.

Ravi Lakkundi

Code Implementation This is copyrighted, by me