Title :
Scalable rate control for very low bit rate (VLBR) video
Author :
Lee, Hung-Ju ; Chiang, Tihao ; Zhang, Ya-Qin
Author_Institution :
Sarnoff Corp., Princeton, NJ, USA
Abstract :
This paper presents a scalable rate control scheme (SRC) based on three new concepts: (1) a more accurate rate distortion model, (2) a sliding window method, and (3) an adaptive selection criterion of data points. The SRC scheme achieves a more accurate target bit allocation under the constraints of low latency and limited buffer size. In addition to the picture-level rate control, the SRC scheme is also applicable to the macroblock-level rate control for finer bit allocation and buffer control, and multiple video objects (VOs) rate control for better video object presentation in different applications. The proposed SRC scheme has been adopted in verification model (VM) 5.0 and VM 8.0 of the emerging ISO MPEG-Q standard
Keywords :
ISO standards; buffer storage; rate distortion theory; telecommunication control; telecommunication standards; variable rate codes; video coding; ISO MPEG-Q standard; R-D model; VLBR; VM 5.0; VM 8.0; adaptive selection criterion; bit allocation; buffer control; buffer size; data points; latency; macroblock-level rate control; multiple video objects rate control; picture-level rate control; rate distortion model; scalable rate control; sliding window method; target bit allocation; verification model; very low bit rate video; video object presentation; Adaptive control; Bit rate; Delay; Encoding; ISO standards; Layout; Programmable control; Quantization; Rate-distortion; Sliding mode control; Spatial resolution; Virtual manufacturing;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.638609
