Jointly optimal inter-mode shape coding and VLC selection

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


This paper investigates how the between frame correlation of shape information can be exploited within the framework of an operationally rate-distortion (ORD) optimized coder. Contours are approximated either by connected second-order spline segments, each defined by three consecutive control points, or by segments of the motion-compensated reference contours. Consecutive control points are then encoded predictively using angle and run temporal contexts or by tracking the reference contour. We employ a novel criterion for selecting global object motion vectors, which further improves efficiency. The problem is formulated as Lagrangian minimization and solved using Dynamic Programming (DP). Furthermore, we employ an iterative technique to remove dependency on a particular VLC and jointly arrive at the ORD globally optimal solution and an optimized conditional parameter distribution.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Image Processing
Number of pages5
StatePublished - Dec 1 1999
EventInternational Conference on Image Processing (ICIP'99) - Kobe, Jpn
Duration: Oct 24 1999Oct 28 1999


OtherInternational Conference on Image Processing (ICIP'99)
CityKobe, Jpn

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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