Rate-distortion optimization for mode decision with sequence statistics in H.264/AVC

Sungjei Kim, Yoonsik Choe

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

1 Citation (Scopus)

Abstract

There are 21 possible candidate macroblock modes in H.264/AVC to encode a macroblock of any sequences using Rate-Distortion Optimization (RDO) mode decision method. RDO is one of the tools in H.264 to choose the best macroblock mode having minimum cost function which is consisted of transformed, quantized macroblock coefficients and Lagrange multiplier. Lagrange multiplier for macroblock mode decision was derived from the assumption of high-rate model approach, and it's a function of constant value 0.85 and QP. Since the use of constant value 0.85 cannot be suitable to any kinds of sequences, especially, in a low-rate environment, it can be degraded the performance of encoder. In these reason, our paper proposed to improve the coding efficiency by controlling Lagrange multiplier adaptively according to sequence statistics, or variance of residual image, in RDO mode decision.

Original languageEnglish
Title of host publicationProceedings of the 4th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2007
Pages140-145
Number of pages6
Publication statusPublished - 2007
Event4th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2007 - Innsbruck, Austria
Duration: 2007 Feb 142007 Feb 16

Publication series

NameProceedings of the 4th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2007

Other

Other4th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2007
CountryAustria
CityInnsbruck
Period07/2/1407/2/16

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Vision and Pattern Recognition
  • Signal Processing

Fingerprint Dive into the research topics of 'Rate-distortion optimization for mode decision with sequence statistics in H.264/AVC'. Together they form a unique fingerprint.

Cite this