Title :
Symbol re-mapping method for improvement of TML-1 VLC coder
Author :
Yoo, Kook-yeol ; Choi, Hyung Sun
Author_Institution :
Inf. Media Lab., Samsung Electron. Co. Ltd., South Korea
fDate :
11/25/1999 12:00:00 AM
Abstract :
To improve the efficiency of variable length codeword (VLC) encoding in TML-1 for H.26L, the authors propose to adaptively change the mapping relationship between a symbol and its bit pattern in the VLC table, based on a local measurement of the symbol probability. Simulation results show that the proposed method gives a ~30 and 37% reduction in the average bit rate for macro block type and coded block pattern information, respectively
Keywords :
entropy codes; probability; symbol manipulation; video codecs; H.26L; Symbol re-mapping method; TML-1 VLC coder; VLC table; average bit rate; bit pattern; coded block pattern; efficiency; macro block type; mapping relationship; symbol probability; variable length codeword;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991452
