Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding
碩士 === 國立嘉義大學 === 資訊工程學系研究所 === 97 === The paper proposes a new rate-estimation metric instead of the mean of absolute difference (MAD) in the H.264/AVC to improve the bandwidth utilization. It is called DCT-spectral bit-amount abundance (DBA) that to compute DBA costs no heavy burden in the rate co...
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ndltd-TW-097NCYU53920212019-05-15T19:27:43Z http://ndltd.ncl.edu.tw/handle/asv8nq Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding 強化H.264/AVC視訊編碼位元率控制之具良好預估性的資料量參數 Ling-Yu Liao 廖令鈺 碩士 國立嘉義大學 資訊工程學系研究所 97 The paper proposes a new rate-estimation metric instead of the mean of absolute difference (MAD) in the H.264/AVC to improve the bandwidth utilization. It is called DCT-spectral bit-amount abundance (DBA) that to compute DBA costs no heavy burden in the rate controlling. The DBA of macroblock (MB) can not only have a good mapping of coding bit count and, particularly, but also be well-predicted from a predictive MB found in the decoded reference frame. The QP decision by the rate-quantization-complexity R-Q-C equation constructed by DBA is quite effective. For complying with a one-pass type of video-coding, the rate controller uses the predicted value of DBA from the stored frame rather than the actual one under one-pass constraint in rate-controlling. So, we also address an efficient matching method using a circle-contrast mean vector (CCMV) to find the highest-correlation predictive MB of coding MB (CMB) for proper DBA estimation. Experiment results show that the proposed rate controlling applying DBA searched by DCMV to H.264/AVC can quite outperform the rate controlling suggested by JM15.1 in terms of PSNR and buffer fullness stabilization with negligible extra computational load. Din-Yuen Chan 章定遠 2009 學位論文 ; thesis 0 zh-TW |
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碩士 === 國立嘉義大學 === 資訊工程學系研究所 === 97 === The paper proposes a new rate-estimation metric instead of the mean of absolute
difference (MAD) in the H.264/AVC to improve the bandwidth utilization. It is called
DCT-spectral bit-amount abundance (DBA) that to compute DBA costs no heavy
burden in the rate controlling. The DBA of macroblock (MB) can not only have a good
mapping of coding bit count and, particularly, but also be well-predicted from a
predictive MB found in the decoded reference frame. The QP decision by the
rate-quantization-complexity R-Q-C equation constructed by DBA is quite effective.
For complying with a one-pass type of video-coding, the rate controller uses the
predicted value of DBA from the stored frame rather than the actual one under
one-pass constraint in rate-controlling. So, we also address an efficient matching
method using a circle-contrast mean vector (CCMV) to find the highest-correlation
predictive MB of coding MB (CMB) for proper DBA estimation. Experiment results
show that the proposed rate controlling applying DBA searched by DCMV to
H.264/AVC can quite outperform the rate controlling suggested by JM15.1 in terms of
PSNR and buffer fullness stabilization with negligible extra computational load.
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Din-Yuen Chan |
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Din-Yuen Chan Ling-Yu Liao 廖令鈺 |
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Ling-Yu Liao 廖令鈺 |
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Ling-Yu Liao 廖令鈺 Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
author_sort |
Ling-Yu Liao |
title |
Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
title_short |
Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
title_full |
Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
title_fullStr |
Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
title_full_unstemmed |
Rate Controlling Enhancement by High-Predictability Source-Abundance Metric in H.264/AVC Video Coding |
title_sort |
rate controlling enhancement by high-predictability source-abundance metric in h.264/avc video coding |
publishDate |
2009 |
url |
http://ndltd.ncl.edu.tw/handle/asv8nq |
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