Title :
Sequence-based rate control for constant quality video
Author :
Xie, Bo ; Zeng, Wenjun
Author_Institution :
PacketVideo Corp., San Diego, CA, USA
Abstract :
Most model based rate control solutions have the generally questionable assumption that video sequence is stationary, and also suffer from the fundamental problems of model parameter mis-estimation. In this paper, we propose a sequence based bit allocation solution with the capability of tracking the nonstationary characteristics in the video source without look-ahead encoding and thus the stationarity assumption is no longer needed. In addition, a new model parameter estimation approach is provided to solve the problems in the existing model parameter estimation schemes. Moreover, a general concept of bit allocation guarantee is presented to achieve the allocated bits in a deterministic way. The proposed rate control solution can achieve constant quality video with less quality flicker and motion jerkiness.
Keywords :
image sequences; parameter estimation; telecommunication control; video coding; bit allocation guarantee; flicker; model parameter estimation approach; motion jerkiness; nonstationary characteristics; parameter mis-estimation; quality; rate control solution; sequence based bit allocation solution; video sequence; video source; Bit rate; Centralized control; Code standards; Layout; MPEG 4 Standard; Parameter estimation; Quadratic programming; Statistics; Video codecs; Video sequences;
Conference_Titel :
Image Processing. 2002. Proceedings. 2002 International Conference on
Print_ISBN :
0-7803-7622-6
DOI :
10.1109/ICIP.2002.1037963