The study of mutually compensable dual rate-estimation parameters for the rate control in H.264/AVC video coding

• Main Authors: Wei-Cheng Wang, 王偉丞
• Other Authors: Din-Yuen Chan
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/46840677368800880125

碩士 === 國立嘉義大學 === 資訊工程學系研究所 === 99 === The thesis proposes novel rate-estimation metric denoted as quantized HT-coefficient dominant count (QHDC) metric and the subband-weighted energy (SWE) to improve the bit-allocation and the quantization-parameter (QP) decision in the H.264/AVC. In order to meet the one-pass processing constraint in video-coding, the rate controller uses the predicted value of QHDC from the stored frame rather than the actual one. Hence, an efficient matching method using the standardized motion vector prediction (MVP) is addressed to find the predictive macroblock (MB) of current MB for proper QHDC estimation. For estimating the source abundance of Intra-coded MBs and compensating the inadequacy of predicting the Intra-coded MB, another metric SWE is addressed. The experimental results show that the proposed rate controlling outperforms the rate controlling suggested by JVT-G012 in terms of PSNR stabilization with negligible increase of rate controlling complexity.