Title :
A new bit-rate control scheme in Basic Unit layer on H.264
Author :
Su, Shuguang ; Su, Yueming
Author_Institution :
Huazhong Univ. of Sci. &Tech., Wuhan, China
Abstract :
The paper focuses on rate-control scheme for H.264 and proposes an improved scheme on Basic-Unit layer, which consists of two steps. Firstly, the new scheme takes account of the relative MAD-complexity of Basic-Unit (BU) and modifies the original scheme of average-allocating-bits in BUs. Secondly, considering the scene-change, it modifies the liner prediction model of MAD. The tests prove that the improved scheme on Basic-Unit layer can predict MAD more accurately and get better subjective quality with PSNR slight raise by about 0.4db.
Keywords :
data compression; prediction theory; video coding; BU layer; H.264; MAD-complexity; PSNR; average-allocating-bit; basic unit layer; bit-rate control scheme; linear prediction model; subjective quality; Accuracy; Complexity theory; Computational modeling; Encoding; PSNR; Predictive models; Streaming media; Basic-Unit; H.264; MAD; Rate Control;
Conference_Titel :
Multimedia Technology (ICMT), 2011 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-61284-771-9
DOI :
10.1109/ICMT.2011.6002118
