Title :
MPEG encoding algorithm with scene adaptive dynamic GOP structure
Author :
Yoneyama, Akio ; Nakajima, Yasuyuki ; Yanagihara, Hiromasa ; Sugano, Masaru
Author_Institution :
Internet Applications Lab., KDD Kamifukuoka R&D Labs., Saitama, Japan
Abstract :
Although a GOP (group of picture) length is often fixed in MPEG, this may not guarantee the best picture quality from the point of view of coding efficiency. Furthermore, it is also well known that P-picture interval M=3 does not provide the best quality for all sequences. We propose an MPEG encoding algorithm with scene adaptive dynamic GOP structure to enhance the picture quality in the cases mentioned above. Using macroblock characteristics such as luminance activity and simple motion compensation on the activity domain, N and M values are dynamically determined
Keywords :
adaptive signal processing; brightness; code standards; data compression; image sequences; motion compensation; telecommunication standards; video coding; GOP length; MPEG encoding algorithm; activity domain; coding efficiency; group of picture; luminance activity; macroblock characteristics; motion compensation; picture quality; scene adaptive dynamic GOP structure; video coding; video compression; video sequences; Change detection algorithms; Encoding; Internet; Laboratories; Layout; Motion compensation; Motion detection; Motion estimation; Transform coding; Video compression;
Conference_Titel :
Multimedia Signal Processing, 1999 IEEE 3rd Workshop on
Conference_Location :
Copenhagen
Print_ISBN :
0-7803-5610-1
DOI :
10.1109/MMSP.1999.793851
