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image processing + matlab + wavelet transforms..good combi ?

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combi matlab

hi pals ...

i m trying to compress the bmp image to jpeg standards using wavelet transforms .. can anyone suggest me how to proceed ??

i also wanted to find " in which portion of the image i have the maximum information .. "

thanks in advance
 

Re: image processing + matlab + wavelet transforms..good com

I am also a beginer at wavelet but as far as i know jpeg is done with the furier transform not wavelet. However jpeg2000 standard is done with wavelet so you can check its standart.

you can check this book:
 

Re: image processing + matlab + wavelet transforms..good com

oh yeah ... its jpeg2000

thanks for the link ....
 

Re: image processing + matlab + wavelet transforms..good com

Hi

I have recently found this site

hxxp://bigwww.epfl.ch/publications/all.html

There are some papers about wavelet (jpeg2000) and image processing. Good for theory.
 

Re: image processing + matlab + wavelet transforms..good com

Dear amer,
JPEG 2000 cover the wavelet transform to compress the Digital Image.
previous JPEG was based on DCT and it uses the assumption that more the correlated image more energy will be packed in the bins and as per the theory the correlated data has the power spectrum peaked near low frequency region.
The similar type of concept is exploited in the Wavelets where you design a filter bank consisting of several filters and the seperate filter is used to get the required frequency component.

I will recommend you to read the standard carefully before jumping on to the implementation.
Try to get the reference software of JPEG 2000 I think it's called JASPER.

-Regards
 

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