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Optical Engineering

Improved rate control via dynamic frame-rate controlling and Kalman filtering for low-delay video coding
Author(s): Din-Yuan Chan; Chih-Hsueh Lin; Wen-Shyong Hsieh
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Paper Abstract

This study proposes a rapid rate-control framework for low-delay video coding. The proposed framework includes a fast frame-rate controller, a frame-level bit-allocation operator, and an adaptive rate-quantization (R-Q) model. The frame-rate controller and the frame-level bit-allocation operator determine the encoding frame rate per time slot and the bit target per frame, which specify motion continuity and consistency of quality, respectively. When a cluster of macroblocks (MBs) in an encoding frame is set by a progressive union process, the adaptive R-Q model is modified by the Kalman filter. The newest R-Q characteristic linear curves of the adaptive R-Q model can be used to obtain the MB-level quantization parameters in a new cluster of MBs (COB). The proposed new framework exhibits higher objective and perceptual qualities than the TMN8 rate control, using a TMN11 frame-rate control module, with a lower computational load.

Paper Details

Date Published: 1 December 2005
PDF: 9 pages
Opt. Eng. 44(12) 127002 doi: 10.1117/1.2148441
Published in: Optical Engineering Volume 44, Issue 12
Show Author Affiliations
Din-Yuan Chan, National Chiayi Univ. (Taiwan)
Chih-Hsueh Lin, National Sun Yat-Sen Univ. (Taiwan)
Wen-Shyong Hsieh, Shu-Te Univ. (Taiwan)


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