Abstract
In wavelet-based L-infinity-constrained embedded coding, the bit-stream is truncated at the bit-rate that corresponds to a guaranteed, user-defined distortion bound. The letter analyzes the optimality of embedded deadzone scalar-quantizers for high-rate L-infinity-constrained scalable wavelet-based image coding. A rate-distortion model applicable to the family of embedded deadzone scalar-quantizers is derived and experimentally validated. Conclusions are drawn regarding the optimal subband-quantizer instantiations. The optimal quantizers are employed in a coding algorithm that retains the coding performance and the flexibility options of wavelet-based codecs while allowing for a fully embedded L-infinity-oriented bit-stream.
| Original language | English |
|---|---|
| Pages (from-to) | 367-371 |
| Number of pages | 5 |
| Journal | IEEE Signal Processing Letters |
| Volume | 11 |
| Issue number | 3 |
| Publication status | Published - Mar 2004 |
Bibliographical note
IEEE Signal Processing Letters, Vol. 11, Nr. 3, pp. 367-371, , IEEE.Keywords
- embedded scalar-quantizers
- L-infinite norm
- wavelet