MPEG-4 and rate-distortion-based shape-coding techniques

Aggelos K. Katsaggelos*, Lisimachos P. Kondi, Fabian W. Meier, Jörn Ostermann, Guido M. Schuster

*Corresponding author for this work

Research output: Contribution to journalArticle

151 Scopus citations


In this paper, we address the problem of the efficient encoding of object boundaries. This problem is becoming increasingly important in applications such (is content-based storage and retrieval, studio and television postproduction, and mobile multimedia applications. The MPEG-4 visual standard will allow the transmission of arbitrarily shaped video objects. The techniques developed for shape coding within the MPEG-4 standardization effort arc described and compared first. A framework for the representation of shapes using their contours is presented next. Such representations are achieved using cun'es of various orders, and they are optimal in the rate-distortion sense. Last, conclusions are drawn.

Original languageEnglish (US)
Pages (from-to)1126-1153
Number of pages28
JournalProceedings of the IEEE
Issue number6
StatePublished - Jan 1 1998


  • Boundary coding
  • MPEG-4
  • Rate-distortion theory
  • Shape coding
  • Video coding

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Katsaggelos, A. K., Kondi, L. P., Meier, F. W., Ostermann, J., & Schuster, G. M. (1998). MPEG-4 and rate-distortion-based shape-coding techniques. Proceedings of the IEEE, 86(6), 1126-1153.