Advanced Real-Time Rate Control for Low Bit Rate Video Communication

Y. Kim, I.B. Jung, D.M. Seo, J.Y. Pyun, S.H. Park “Advanced Real-Time Rate Control for Low Bit Rate Video Communication”, International Conference on Intelligent Computing, pp. 275-284, Aug. 2005.

Advanced Real-Time Rate Control for Low Bit Rate Video Communication

Yoon Kim1, Inbum Jung1, Dong-Mahn Seo1, Jae-Young Pyun2, and Sang-Hyun Park3

1 Department of Electrical and Computer Engineering, Kangwon National University, Chunchon, 200-701, Korea. {yooni, ibjung, sarum}@kangwon.ac.kr

2 Department of Information Communication Engineering, Chosun University, 375 Susuk-dong, Dong-gu, Gwangju, 501-759, Korea. jypyun@chosun.ac.kr

3 Department of Multimedia Engineering, Sunchon National University, Sunchon, 540-742, Korea
shark@sunchon.ac.kr

Abstract. In this paper, we propose a novel real-time frame-layer rate
control algorithm using sliding window method for low bit rate video
coding. The proposed rate control method performs bit allocation at the
frame level to minimize the average distortion over an entire sequence as
well as variations in distortion between frames. A new frame-layer rate-
distortion model is derived, and a non-iterative optimization method is
used for low computational complexity. In order to reduce the quality

uctuation, we use a sliding window scheme which does not require the
pre-analysis process. Therefore, the proposed algorithm does not produce
time delay from encoding, and is suitable for real-time low-complexity
video encoder. Experimental results indicate that the proposed control
method provides better visual and PSNR performance than the existing
TMN8 rate control method.