Image Compression

Demo source code for image compression.

Description

Image Compression

A collection of simple routines for image compression using different techniques.

BTCODE:
Image compression Using Block Truncation Coding.

PYRAMID:
Image compression based on Gaussian Pyramids.

DCTCOMPR:
Image compression based on Discrete Cosine Transform.

IMCOMPR:
Image compression based on Singular Value Decomposition.

The given codes can be also used in 2D noise suppression.

Notes:
       The function "conv2fft" performs a 2D FFT-based convolution.
       Type "help conv2fft" on MATLAB command window for more informations.

For a more detailed description see:

Ohad Gal's file submission
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=4328&objectType=file

Vallabha Hampiholi's file submission
http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=4718&objectType=file

Type "helpwin functionname" on MATLAB command window to see the references and how to use these functions.

Please contribute if you find this software useful.
Report bugs to [e-mail]

------------------------------------------------------------------
   Luigi Rosa
   Via Centrale 27
   67042 Civita di Bagno
   L'Aquila --- ITALY
   email [e-mail]
   mobile [phone]
   http://utenti.lycos.it/matlab
------------------------------------------------------------------

Acknowledgements

The author wishes to acknowledge the following in the creation of this submission:
JPEG Compression, Lossy Image Compression
This submission has inspired the following:
Manchester

• Required Products: Image Processing Toolbox; Signal Processing Toolbox; Wavelet Toolbox
• MATLAB release: MATLAB 6.5 (R13)

[Luigi Rosa]

Download here the functions used to perform FFT-based 2D and 1D convolution:

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=4334&objectType=FILE

[RAGAD ASADI]

please, if you work in SPIHT send me

[Rod Smith]

i prefer optimize Image compression tool at http://www.optimizehosting.com

[venkateswararao arvapalli]

 

[jhhtgf bvggbv]

 

[kanaga valli]

 

[ABDESLAM BOUHOUIA]

very good code source

[sivaji m]

very good

[Alvise Sommariva]

A good implementation. Highly suggested for a good lesson on SVD.

[abebe gemeda]

I will be very happy

[dwi pramestya]

good

[Ganesh AS]

why haveu messed up the ct based compression? why have u squared the array? its completely unnecessary..

[Berat Dogan]

final image "im" is a floating point image...I am not sure if it is a real compression..

[sure geo]

 

[subathra suba]

 

[eman nasaar]

thanks

[subhash chandra]

good

[dilpreet]

i want to do thesis in image compression....i dnt have much knowledge od image compression can any 1 guide me..my id is
[e-mail]

[kishan]

hello i am doing a project on microarray image compression using svd can you please help me with the code
thank u
my email id is [e-mail]

[anoop]

how to view the code