Intra Line Copying for H.265/HEVC Screen Content Coding
碩士 === 國立交通大學 === 多媒體工程研究所 === 103 === In this thesis, we present an intra line copying mode, which introduces a finer-granularity block partitioning structure for the intra copying technique, to further improve the compression efficiency for HEVC Screen Content Coding. This mode first divides a pre...
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ndltd-TW-103NCTU56410142016-12-19T04:14:35Z http://ndltd.ncl.edu.tw/handle/50801072532618131947 Intra Line Copying for H.265/HEVC Screen Content Coding 應用於H.265/HEVC視窗視訊編碼之畫面內線型區塊複製預估模式 Chang, Tsui-Shan 張翠姍 碩士 國立交通大學 多媒體工程研究所 103 In this thesis, we present an intra line copying mode, which introduces a finer-granularity block partitioning structure for the intra copying technique, to further improve the compression efficiency for HEVC Screen Content Coding. This mode first divides a prediction block horizontally or vertically into 1-pixel-wide lines and then operates intra copying line-by-line from the reconstructed pixels in the current frame. It shares some parallels with the notion of string matching widely used for lossless data compression. It, however, is more compliant to the current HEVC design and is parallel-friendly. This thesis shall detail its various design issues, including the design of a fast block vector searching algorithm based on hashing techniques, and the impact on the memory access bandwidth and CABAC throughput. Experimental results show that the proposed mode can offer 2.0-7.5% of BD-rate reductions, with only 10% increase of encoding runtime and negligible impact on decoding runtime, when integrated into the SCM-1.0 test model. Peng, Wen-Hsiao 彭文孝 2014 學位論文 ; thesis 40 en_US |
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碩士 === 國立交通大學 === 多媒體工程研究所 === 103 === In this thesis, we present an intra line copying mode, which introduces a finer-granularity block partitioning structure for the intra copying technique, to further improve the compression efficiency for HEVC Screen Content Coding. This mode first divides a prediction block horizontally or vertically into 1-pixel-wide lines and then operates intra copying line-by-line from the reconstructed pixels in the current frame. It shares some parallels with the notion of string matching widely used for lossless data compression. It, however, is more compliant to the current HEVC design and is parallel-friendly. This thesis shall detail its various design issues, including the design of a fast block vector searching algorithm based on hashing techniques, and the impact on the memory access bandwidth and CABAC throughput. Experimental results show that the proposed mode can offer 2.0-7.5% of BD-rate reductions, with only 10% increase of encoding runtime and negligible impact on decoding runtime, when integrated into the SCM-1.0 test model.
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Peng, Wen-Hsiao |
author_facet |
Peng, Wen-Hsiao Chang, Tsui-Shan 張翠姍 |
author |
Chang, Tsui-Shan 張翠姍 |
spellingShingle |
Chang, Tsui-Shan 張翠姍 Intra Line Copying for H.265/HEVC Screen Content Coding |
author_sort |
Chang, Tsui-Shan |
title |
Intra Line Copying for H.265/HEVC Screen Content Coding |
title_short |
Intra Line Copying for H.265/HEVC Screen Content Coding |
title_full |
Intra Line Copying for H.265/HEVC Screen Content Coding |
title_fullStr |
Intra Line Copying for H.265/HEVC Screen Content Coding |
title_full_unstemmed |
Intra Line Copying for H.265/HEVC Screen Content Coding |
title_sort |
intra line copying for h.265/hevc screen content coding |
publishDate |
2014 |
url |
http://ndltd.ncl.edu.tw/handle/50801072532618131947 |
work_keys_str_mv |
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