A Pattern-Search Method for H.264/AVC CAVLC Decoding

In this paper, a new implementation method is proposed for Context-Adaptive Variable Length Coding (CAVLC) used in H.264 Baseline Profile. We analyze the correlation between bit patterns and 4x4 (or 2x2) blocks and have an idea of a pattern-search method before CAVLC decoding. If a pattern is matched in our look-up table, we can skip the standard CAVLD procedure and reconstruct a block directly. However, if there is not any pattern matched in the table, we have to reconstruct a block by CAVLD. Our lookup tables are built up according to our statistics and analysis. The experimental results show that the performance can be improved 10% compared with the standard CAVLD procedure.

• Type: Conference
• Year: 2006
• Where: ICMCS
• Authors: Shau-Yin Tseng, Tien-Wei Hsieh
• Keywords: Bit Patterns, Context-Adaptive Variable Length, ICMCS 2006, Standard Cavld Procedure