CODEWITHSUNDEEP
image-processingimage-compressionjpeg2000wavelet
Sufiyan Ghori
Sufiyan Ghori

Reputation: 18753

which Wavelet is used for Jpeg2000 Image Compression?

which Wavelet is used for Jpeg2000 Image Compression ?

I was reading the Book on Wavelet Transform to find out how wavelet works for image compression but there are so many types of Wavelets mentioned in the book and i am confused which one is used for Jpeg2000 compression ?

These are the types i've found in the book.

Biorthogonal wavelet, Shannon or “Sinc” wavelets , Haar wavelets (the shortest), Coiflets wavelets.

P.S: I've no knowledge of image compression , just starting it with this project.

Upvotes: 1

Views: 2100

Answers (2)

Tim
Tim

Reputation: 86

Gareth is correct that CDF 9/7 wavelets are used for lossy compression, but LGT (not CDF) 5/3 wavelets are used for lossless compression. See this Wikipedia article for more information on JPEG 2000 and this blog for more background on LGT 5/3 wavelets.

Upvotes: 0

Gareth McCaughan
Gareth McCaughan

Reputation: 19971

According to the Wikipedia article on JPEG 2000, two different varieties of Cohen-Daubechies-Feauveau wavelet are used: the CDF 5/3 wavelet for lossless compression, and a CDF 9/7 wavelet for lossy compression. (Both sorts are biorthogonal.) See here: http://en.wikipedia.org/wiki/Cohen-Daubechies-Feauveau_wavelet .

Upvotes: 5

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