Context-adaptive coded block pattern coding for H.264/AVC

Yangsoo Kim, Sungjei Kim, Jinwoo Jeong, Yoonsik Choe

Research output: Contribution to journalArticlepeer-review


For coding of quantized transform coefficients, a coded block pattern (CBP) is a key syntax element to represent the existence of coefficients in a macroblock efficiently. In H.264/AVC, the CBP is coded by using a fixed variable length coding table, called Exp-Golomb codes. However, since the CBP is highly affected by the change of quantization parameter (QP), in this paper, we show the CBP distributions according to the change of QP and propose an context-adaptive CBP coding method. The proposed scheme selects the coding table adap-tively based on the context of neighbors' CBP. Experimental results show that the proposed scheme reduces average 1.15% in total bit rate and 12.54% in CBP bit rate compared to the anchor, H.264/AVC.

Original languageEnglish
Pages (from-to)1777-1782
Number of pages6
Journalieice electronics express
Issue number21
Publication statusPublished - 2011 Nov 10

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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