Title :
Adaptive rate control scheme for very low bit rate video coding
Author :
Oh, Hwang-Seok ; Lee, Heung-Kyu
Author_Institution :
Dept. of Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
fDate :
11/1/1996 12:00:00 AM
Abstract :
In video coding systems, an effective rate control method is one of the most important issues for a good video quality. This paper presents an adaptive rate control scheme based on buffer fullness, quantization, and buffer utilization for very low bit rate communication lines, such as 16 kbit/s, 32 kbit/s, and so on. The strategy is implemented by the H.263, which is a video coding algorithm for narrow band telecommunication channels up to 64 kbit/s recommended by the ITU-T SG15, to show the effectiveness. The simulation result shows that the suggested rate control scheme has better SNR performance and buffer utilization of the source coder than those of linear and non-linear buffer control strategies
Keywords :
adaptive control; buffer storage; channel capacity; quantisation (signal); telecommunication channels; telecommunication transmission lines; video coding; 16 kbit/s; 32 kbit/s; 64 kbit/s; H.263; ITU-T SG15; SNR performance; adaptive rate control; buffer utilization; linear buffer control; narrow band telecommunication channels; nonlinear buffer control; quantization; simulation results; source coder; very low bit rate communication lines; very low bit rate video coding; video coding algorithm; video coding systems; video quality; Adaptive control; Bit rate; Communication channels; Communication system control; Control systems; Narrowband; Programmable control; Quantization; Telecommunication control; Video coding;
Journal_Title :
Consumer Electronics, IEEE Transactions on
