Spatio-temporal correlation based fast inter mode decision for HEVC
The new generation high efficiency video coding (HEVC) standard adopts coding tree unit (CTU) quadtree partition technology and ten inter prediction unit (PU) modes to improve compression efficiency significantly, but it brings in an enormous encoding computational complexit . A spatio-temporal corr...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2016-04-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016073/ |
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| author | Wei ZHU Xun-hua ZHANG Cai-sheng WANG Hua2 ZHANG |
| author_facet | Wei ZHU Xun-hua ZHANG Cai-sheng WANG Hua2 ZHANG |
| author_sort | Wei ZHU |
| collection | DOAJ |
| description | The new generation high efficiency video coding (HEVC) standard adopts coding tree unit (CTU) quadtree partition technology and ten inter prediction unit (PU) modes to improve compression efficiency significantly, but it brings in an enormous encoding computational complexit . A spatio-temporal correlation based fast inter mode decision algorithm for HEVC was proposed to reduce partition times of coding unit (CU) and inter PU mode candidates. First, the spatio-temporal correlation of depth information among the current CTU, the same located CTU in the reference frame and the spatial neighbor CTU in the current frame are utilized to predict depth range of the current CTU. Then, the spatial correlation of optimal PU modes between the current CU and its parent-CU was analyzed. And the rate-distortion (RD) costs of the estimated PU modes of the current CU were also used. Based on these, the redundant inter PU modes of current CU are skipped. The experiment results demonstrate that as compared to the HEVC test model (HM), the proposed algorithm saves about 52% encoding time under different encoding configurations, and it maintains a good RD performance. When compared to HM with fast mode decision algorithms enabled, the proposed algorithm further saves about 30% encoding time. |
| format | Article |
| id | doaj-art-bed8ff4d3fab4f39a16470d2cebd37e8 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2016-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-bed8ff4d3fab4f39a16470d2cebd37e82025-01-14T06:55:12ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2016-04-0137647359700386Spatio-temporal correlation based fast inter mode decision for HEVCWei ZHUXun-hua ZHANGCai-sheng WANGHua2 ZHANGThe new generation high efficiency video coding (HEVC) standard adopts coding tree unit (CTU) quadtree partition technology and ten inter prediction unit (PU) modes to improve compression efficiency significantly, but it brings in an enormous encoding computational complexit . A spatio-temporal correlation based fast inter mode decision algorithm for HEVC was proposed to reduce partition times of coding unit (CU) and inter PU mode candidates. First, the spatio-temporal correlation of depth information among the current CTU, the same located CTU in the reference frame and the spatial neighbor CTU in the current frame are utilized to predict depth range of the current CTU. Then, the spatial correlation of optimal PU modes between the current CU and its parent-CU was analyzed. And the rate-distortion (RD) costs of the estimated PU modes of the current CU were also used. Based on these, the redundant inter PU modes of current CU are skipped. The experiment results demonstrate that as compared to the HEVC test model (HM), the proposed algorithm saves about 52% encoding time under different encoding configurations, and it maintains a good RD performance. When compared to HM with fast mode decision algorithms enabled, the proposed algorithm further saves about 30% encoding time.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016073/high efficiency video codingcoding tree unitprediction unitspatio-temporal correlation |
| spellingShingle | Wei ZHU Xun-hua ZHANG Cai-sheng WANG Hua2 ZHANG Spatio-temporal correlation based fast inter mode decision for HEVC Tongxin xuebao high efficiency video coding coding tree unit prediction unit spatio-temporal correlation |
| title | Spatio-temporal correlation based fast inter mode decision for HEVC |
| title_full | Spatio-temporal correlation based fast inter mode decision for HEVC |
| title_fullStr | Spatio-temporal correlation based fast inter mode decision for HEVC |
| title_full_unstemmed | Spatio-temporal correlation based fast inter mode decision for HEVC |
| title_short | Spatio-temporal correlation based fast inter mode decision for HEVC |
| title_sort | spatio temporal correlation based fast inter mode decision for hevc |
| topic | high efficiency video coding coding tree unit prediction unit spatio-temporal correlation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2016073/ |
| work_keys_str_mv | AT weizhu spatiotemporalcorrelationbasedfastintermodedecisionforhevc AT xunhuazhang spatiotemporalcorrelationbasedfastintermodedecisionforhevc AT caishengwang spatiotemporalcorrelationbasedfastintermodedecisionforhevc AT hua2zhang spatiotemporalcorrelationbasedfastintermodedecisionforhevc |