Variable bit rate video coding method

Hideo Kuroda, Makoto Fujimura, Yukihiro Nataochi, Masaaki Ikehara

Research output: Contribution to journalArticle

Abstract

The NUCLEI (Nagasaki University codec using large interframe prediction errors as important parts) method is proposed in this paper as a new interframe coding method for the asynchronous transfer model (ATM). Characteristics of this method are as follows: 1) interframe predictions are done using a full band, considering the high coding efficiency during the normal state; 2) interframe predictions are done even after cell loss, considering the high coding efficiency after cell loss; and 3) utilizing the fact that the small moving areas are less important than the large moving areas in dynamic images (motion pictures), large moving areas or blocks with large interframe differences are allocated to priority (higher priority) cells as priority blocks and comparatively small blocks are allocated to nonpriority (lower priority) cells as nonpriority blocks. These characteristics are realized by assigning frame memories for storing priority block signals in addition to frame memories storing all images. It is shown by computer simulations that good interframe coding characteristics can be realized in both during the normal state and after a cell loss.

Original languageEnglish
Pages (from-to)35-46
Number of pages12
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume76
Issue number4
DOIs
Publication statusPublished - 1993
Externally publishedYes

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Keywords

  • ATM
  • cell loss
  • frame memory refreshing
  • interframe coding

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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