A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC
碩士 === 國立高雄科技大學 === 電腦與通訊工程系 === 107 === Compared to its predecessor, H.264/AVC, the high efficiency video coding (HEVC) standard provides the improved compression performance using the high-flexible coding-unit partitioning represented as a quad-tree. However, in order to obtain the optimal coding...
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ndltd-TW-107NKUS06500162019-07-06T05:58:51Z http://ndltd.ncl.edu.tw/handle/gytx7f A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC HEVC畫面內預測之快速模式決策及基於紋理的編碼單元分割提早終止 LI, YEH-HAO 李曄豪 碩士 國立高雄科技大學 電腦與通訊工程系 107 Compared to its predecessor, H.264/AVC, the high efficiency video coding (HEVC) standard provides the improved compression performance using the high-flexible coding-unit partitioning represented as a quad-tree. However, in order to obtain the optimal coding tree unit (CTU), it is necessary to traverse each coding unit of all sizes in the quad-tree. Compared to 9 intra-prediction modes in H.264/AVC, HEVC has increased to 35 intra-prediction modes resulting in improving intra-frame coding performance with the penalty of higher computational complexity of encoding. This paper proposes an algorithm of improving intra-prediction mode decision using a two-stage rough mode decision (RMD) and early terminating coding-unit partition based on the texture in the coding units. The experimental results show that compared with the HEVC reference software HM16.20, the proposed method can save an average of 32.24% of encoding time with only 2.476% Bjontegaard delta bit-rate (BD-BR) increasing and 0.303dB Bjontegaard delta peak-signal-to-noise ratio (BD-PSNR) loss of reconstructed video. WEI, CHING-HUANG 魏清煌 2019 學位論文 ; thesis 55 zh-TW |
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碩士 === 國立高雄科技大學 === 電腦與通訊工程系 === 107 === Compared to its predecessor, H.264/AVC, the high efficiency video coding (HEVC) standard provides the improved compression performance using the high-flexible coding-unit partitioning represented as a quad-tree. However, in order to obtain the optimal coding tree unit (CTU), it is necessary to traverse each coding unit of all sizes in the quad-tree. Compared to 9 intra-prediction modes in H.264/AVC, HEVC has increased to 35 intra-prediction modes resulting in improving intra-frame coding performance with the penalty of higher computational complexity of encoding.
This paper proposes an algorithm of improving intra-prediction mode decision using a two-stage rough mode decision (RMD) and early terminating coding-unit partition based on the texture in the coding units. The experimental results show that compared with the HEVC reference software HM16.20, the proposed method can save an average of 32.24% of encoding time with only 2.476% Bjontegaard delta bit-rate (BD-BR) increasing and 0.303dB Bjontegaard delta peak-signal-to-noise ratio (BD-PSNR) loss of reconstructed video.
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WEI, CHING-HUANG |
author_facet |
WEI, CHING-HUANG LI, YEH-HAO 李曄豪 |
author |
LI, YEH-HAO 李曄豪 |
spellingShingle |
LI, YEH-HAO 李曄豪 A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
author_sort |
LI, YEH-HAO |
title |
A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
title_short |
A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
title_full |
A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
title_fullStr |
A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
title_full_unstemmed |
A Fast Mode Decision and Texture-based Early Termination of Coding Unit Partition for Intra-prediction in HEVC |
title_sort |
fast mode decision and texture-based early termination of coding unit partition for intra-prediction in hevc |
publishDate |
2019 |
url |
http://ndltd.ncl.edu.tw/handle/gytx7f |
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