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Image Compression

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Image Compression

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16 Apr 2004 (Updated )

Demo source code for image compression.

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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 luigi.rosa@tiscali.it

------------------------------------------------------------------
   Luigi Rosa
   Via Centrale 27
   67042 Civita di Bagno
   L'Aquila --- ITALY
   email luigi.rosa@tiscali.it
   mobile +39 340 3463208
   http://utenti.lycos.it/matlab
------------------------------------------------------------------

Acknowledgements

Jpeg Compression and Lossy Image Compression inspired this file.

This file inspired Manchester.

Required Products Image Processing Toolbox
Signal Processing Toolbox
Wavelet Toolbox
MATLAB release MATLAB 6.5 (R13)
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Comments and Ratings (21)
09 May 2014 Fatma Amer

good job

24 Apr 2011 anoop

how to view the code

25 Dec 2010 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 kishanksit@gmail.com

28 Aug 2010 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
dilpreet2@gmail.com

07 Oct 2008 subhash chandra

good

17 Apr 2008 eman nasaar

thanks

17 Apr 2008 subathra suba  
07 Apr 2008 sure geo  
12 Nov 2007 Berat Dogan

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

03 Aug 2007 Ganesh AS

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

14 Jun 2007 dwi pramestya

good

21 May 2007 abebe gemeda

I will be very happy

28 Feb 2007 Alvise Sommariva

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

06 Feb 2007 sivaji m

very good

27 Nov 2006 ABDESLAM BOUHOUIA

very good code source

15 May 2006 kanaga valli  
19 Dec 2005 jhhtgf bvggbv  
27 Oct 2005 venkateswararao arvapalli  
16 Aug 2005 Rod Smith

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

23 Oct 2004 RAGAD ASADI

please, if you work in SPIHT send me

20 Apr 2004 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

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