Title :
Quantization adjusting algorithm using difference rate value
Author :
Huo, Yan ; Jing, Tao ; Zhang, Yu ; Niu, Renfei
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing
Abstract :
This paper presents a quantization parameter (QP) adjusting algorithm. In this work, final QP can be obtained by difference value of rate and distortion. In order to obtain the adjusted quantization, the method adopts quadratic relationship between DeltaR and DeltaQ, and uses the iteration processing. This adjusting process can be used in adaptive quantization algorithm in video compression coding such as MPEG standard. Simulation results demonstrate that this algorithm can adjust QP automatically and obtain the better performance in PSNR.
Keywords :
data compression; iterative methods; quantisation (signal); rate distortion theory; video coding; difference distortion value; difference rate value; iteration processing; quantization parameter adjusting algorithm; video compression coding; Bit rate; Code standards; IP networks; MPEG standards; Quadratic programming; Quantization; Rate distortion theory; Rate-distortion; Video compression; Wireless networks;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697360
