Adaptive entropy-coded subband coding of image sequences

Yong Han Kim, James W. Modestino

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We describe a new approach to image sequence coding based upon variable-rate entropy-constrained subband coding (ECSBC) and, furthermore, develop the corresponding practical implementation of the ECSBC scheme for fixed-rate channels by extending recently developed adaptive entropy-coded quantization (AEC) techniques. Although the entropy-constrained design of subband coding systems provides improved coding efficiency compared to level-constrained design approaches, the resulting coding system generates variable-rate outputs which must be buffered before fixed-rate transmission. In this case, the finite buffer, however large, that interfaces the encoder and the channel will eventually overflow or underflow resulting in a catastrophic loss of encoder-decoder synchronism with an associated large amount of distortion. A buffer-adaptive arithmetic-coded implementation of the ECSBC scheme, called adaptive entropy-coded subband coding (ECSBC/AEC), is described to completely eliminate the associated encoder buffer overflow/underflow problems, even with a very small encoder buffer. We demonstrate that the ECSBC/AEC scheme operating on real-world image sequences performs very close to the original ECSBC scheme whose performance is achievable only with an encoder buffer of infinite size. Moreover, promising results on the low-rate interframe coding of real-world monochrome and color image sequences are presented using the ECSBC/AEC scheme combined with a hierarchical motion-compensated prediction method.

Original languageEnglish
Pages (from-to)975-987
Number of pages13
JournalIEEE Transactions on Communications
Volume41
Issue number6
DOIs
StatePublished - Jun 1 1993

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Entropy
Synchronization
Color

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Adaptive entropy-coded subband coding of image sequences. / Kim, Yong Han; Modestino, James W.

In: IEEE Transactions on Communications, Vol. 41, No. 6, 01.06.1993, p. 975-987.

Research output: Contribution to journalArticle

Kim, Yong Han ; Modestino, James W. / Adaptive entropy-coded subband coding of image sequences. In: IEEE Transactions on Communications. 1993 ; Vol. 41, No. 6. pp. 975-987.
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