'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.
Solution 1:[1]
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 .
Solution 2:[2]
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.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Gareth McCaughan |
| Solution 2 | Tim |