A Macroblock-Layer Rate Control with Adaptive Quantization Parameter Decision and Header Bits Length Estimation 


Vol. 34,  No. 2, pp. 200-208, Feb.  2009


PDF
  Abstract

A macroblock layer rate control for H.264/AVC has the problem that allocated target bits for current frame occasionally are exhausted too fast due to inadequate quantization parameter assignment. In this case, the maximum permissible quantization parameter is used to encode for remaining macroblocks and it leads to degradation of the visual quality. In addition, the header bits length estimation algorithm used for quantization parameter assignment takes the average header bits length for the encoded macroblocks of the previous frame and the current frame. Therefore, it generates a big mismatch between the actually generated header bits length and the estimated header bits length. In this paper, we propose adaptive quantization parameter decision method to prevent early exhausting target bits during encoding the current frame by considering the number of macroblocks that have negative targets bits in previous frame and the improved header bits length estimation scheme for accurate quantization parameter decision.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

S. Kim and J. Suh, "A Macroblock-Layer Rate Control with Adaptive Quantization Parameter Decision and Header Bits Length Estimation," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 2, pp. 200-208, 2009. DOI: .

[ACM Style]

Se-ho Kim and Jae-won Suh. 2009. A Macroblock-Layer Rate Control with Adaptive Quantization Parameter Decision and Header Bits Length Estimation. The Journal of Korean Institute of Communications and Information Sciences, 34, 2, (2009), 200-208. DOI: .

[KICS Style]

Se-ho Kim and Jae-won Suh, "A Macroblock-Layer Rate Control with Adaptive Quantization Parameter Decision and Header Bits Length Estimation," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 2, pp. 200-208, 2. 2009.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880