| Paper: | IMDSP-P5.1 | ||
| Session: | Motion Estimation | ||
| Time: | Wednesday, May 19, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Image and Multidimensional Signal Processing: Image and Video Coding | ||
| Title: | SELECTION OF THE LAGRANGE MULTIPLIER FOR BLOCK-BASED MOTION ESTIMATION CRITERIA | ||
| Authors: | Pekka Sangi; University of Oulu | ||
| Janne Heikkilä; University of Oulu | |||
| Olli Silvén; University of Oulu | |||
| Abstract: | In hybrid video coding, motion vectors used for motion compensation constitute an important set of decisions.Cost functions for block motion estimation that take smoothness of resulting motion vector field into account, in addition to the motion compensated prediction error, have been proposed. Computationally simple derivatives of SAD- and SSD-based criteria are studied in this paper. Cost functions are based on Lagrangian rate-distortion formulation, and the basic question is how the Lagrangian multiplier involved should be selected. Assumptions behind these cost functions are discussed, and a new method is derived for determining the multiplier.Comparisons to other strategies are made with experiments. Results show that selection of the multiplier is not critical. | ||
| Back | |||
Home -||-
Organizing Committee -||-
Technical Committee -||-
Technical Program -||-
Plenaries
Paper Submission -||-
Special Sessions -||-
ITT -||-
Paper Review -||-
Exhibits -||-
Tutorials
Information -||-
Registration -||-
Travel Insurance -||-
Housing -||-
Workshops