Abstract
This paper extends the group testing for wavelets (IEEE Trans. Image Process. 11 (2002) 901) algorithm to code coefficients from the wavelet packet transform, the discrete cosine transform, and various lapped transforms. Group testing offers a noticeable improvement over zerotree coding techniques on these transforms; is inherently flexible; and can be adapted to different transforms with relative ease. The new algorithms are competitive with many recent state-of-the-art image coders that use the same transforms.
Original language | English |
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Pages (from-to) | 561-574 |
Number of pages | 14 |
Journal | Signal Processing: Image Communication |
Volume | 18 |
Issue number | 7 |
DOIs | |
State | Published - Aug 2003 |
Keywords
- Block transform coding
- Embedded coding
- Group testing
- Image compression
- Lapped transforms
- Wavelet packets