Exploiting temporal correlation in shape coding

Gerry Melnikov*, Guido M. Schuster, Aggelos K Katsaggelos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This paper investigates ways to explore the between frame correlation of shape information within the framework of an operationally rate-distortion (ORD) optimal coder. Contours are approximated both by connected second-order spline segments, each defined by three consecutive control points, and by segments of the motion-compensated reference contours. Consecutive control points are then encoded predictively using angle and run temporal contexts. We utilize a novel criterion for selecting global object motion vectors, which further improves efficiency. Formulating this problem as Lagrangian minimization, we employ an iterative technique to remove dependency on a particular VLC and jointly arrive at the ORD optimal solution and its underlying conditional parameter distribution.

Original languageEnglish (US)
Pages (from-to)1601-1605
Number of pages5
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
Volume2
StatePublished - Dec 1 1998

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

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