DocumentCode :
379897
Title :
Open-loop design of predictive vector quantizers for video coding
Author :
Rose, Kenneth ; Khalil, Hosam ; Regunathan, S.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fYear :
1998
fDate :
4-7 Oct 1998
Firstpage :
953
Abstract :
The basic vector quantization (VQ) technique employed in video coding belongs to the category of predictive vector quantization (PVQ), as it involves quantization of the (motion compensated) frame prediction error. It is well known that the design of PVQ suffers from fundamental difficulties, due to the prediction loop, which have an impact on the convergence and the stability of the design procedure. We propose an approach to PVQ design that enjoys the stability of open-loop design while it ensures ultimate optimization of the closed-loop system. The method is derived for general predictive quantization, and we demonstrate it on video compression at low bit rates, where it provides substantial improvement over standard open and closed loop design techniques
Keywords :
coding errors; convergence of numerical methods; image sequences; motion compensation; prediction theory; vector quantisation; video coding; PVQ; closed-loop system optimisation; convergence; low bit rates; motion compensated frame prediction error; open-loop design; prediction loop; predictive vector quantizers; stability; training; video coding; video compression; video sequences; Bit rate; Computer errors; Digital signal processing; Discrete cosine transforms; Image coding; Stability; Statistics; Vector quantization; Video coding; Video compression;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
Type :
conf
DOI :
10.1109/ICIP.1998.999081
Filename :
999081
Link To Document :
بازگشت