Quadtree Based Nonsquare Block Structure for Inter Frame Coding in High Efficiency Video Coding
A concept of a quadtree based nonsquare block coding structure is presented in this paper for the emerging High Efficiency Video Coding standard, which includes a quadtree based asymmetric motion partitioning scheme and a nonsquare quadtree transform (NSQT) algorithm. Nonsquare motion partitioning i...
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| Veröffentlicht in: | IEEE transactions on circuits and systems for video technology 2012-12, Vol.22 (12), p.1707-1719 |
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| container_issue | 12 |
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| container_title | IEEE transactions on circuits and systems for video technology |
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| creator | Yuan Yuan Il-Koo Kim Xiaozhen Zheng Lingzhi Liu Xiaoran Cao Lee, Sunil Min-Su Cheon Lee, T. Yun He Jeong-Hoon Park |
| description | A concept of a quadtree based nonsquare block coding structure is presented in this paper for the emerging High Efficiency Video Coding standard, which includes a quadtree based asymmetric motion partitioning scheme and a nonsquare quadtree transform (NSQT) algorithm. Nonsquare motion partitioning in inter frame coding provides the possibility of getting more accurate prediction results by splitting one coding block into two nonsquare prediction blocks. Contrary to the traditional symmetric motion partitions (SMP), asymmetric motion partitions (AMP) are proposed to improve the coding efficiency, especially for the coding blocks with irregular object boundaries. NSQT is designed for nonsquare prediction blocks (SMP and AMP), which combines square and nonsquare transform blocks in a unified transform structure. It exploits the directional characteristic of an image block to improve the transform efficiency. The combination of nonsquare partitions and NSQT provides high coding flexibility and low implementation cost for both encoder and decoder design. Simulation results show that about 0.9%-2.8% bit-rate saving can be achieved in terms of different configurations, and subjective quality can also be improved. |
| doi_str_mv | 10.1109/TCSVT.2012.2223037 |
| format | Article |
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Nonsquare motion partitioning in inter frame coding provides the possibility of getting more accurate prediction results by splitting one coding block into two nonsquare prediction blocks. Contrary to the traditional symmetric motion partitions (SMP), asymmetric motion partitions (AMP) are proposed to improve the coding efficiency, especially for the coding blocks with irregular object boundaries. NSQT is designed for nonsquare prediction blocks (SMP and AMP), which combines square and nonsquare transform blocks in a unified transform structure. It exploits the directional characteristic of an image block to improve the transform efficiency. The combination of nonsquare partitions and NSQT provides high coding flexibility and low implementation cost for both encoder and decoder design. Simulation results show that about 0.9%-2.8% bit-rate saving can be achieved in terms of different configurations, and subjective quality can also be improved.</description><identifier>ISSN: 1051-8215</identifier><identifier>EISSN: 1558-2205</identifier><identifier>DOI: 10.1109/TCSVT.2012.2223037</identifier><identifier>CODEN: ITCTEM</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Asymmetric motion partitions ; Asymmetry ; Blocking ; Coding ; Coding standards ; Efficiency ; Encoding ; high efficiency video coding (HEVC) ; nonsquare quadtree transform (NSQT) ; Partitioning ; Partitions ; quadtree structure ; Quadtrees ; Studies ; Transforms ; Video coding</subject><ispartof>IEEE transactions on circuits and systems for video technology, 2012-12, Vol.22 (12), p.1707-1719</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Dec 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c394t-39a57471cc0cb2f51b0af488de1f3cd6b1ff8775e7316f6bee91094c0fbedc73</citedby><cites>FETCH-LOGICAL-c394t-39a57471cc0cb2f51b0af488de1f3cd6b1ff8775e7316f6bee91094c0fbedc73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6324422$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,777,781,793,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6324422$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Yuan Yuan</creatorcontrib><creatorcontrib>Il-Koo Kim</creatorcontrib><creatorcontrib>Xiaozhen Zheng</creatorcontrib><creatorcontrib>Lingzhi Liu</creatorcontrib><creatorcontrib>Xiaoran Cao</creatorcontrib><creatorcontrib>Lee, Sunil</creatorcontrib><creatorcontrib>Min-Su Cheon</creatorcontrib><creatorcontrib>Lee, T.</creatorcontrib><creatorcontrib>Yun He</creatorcontrib><creatorcontrib>Jeong-Hoon Park</creatorcontrib><title>Quadtree Based Nonsquare Block Structure for Inter Frame Coding in High Efficiency Video Coding</title><title>IEEE transactions on circuits and systems for video technology</title><addtitle>TCSVT</addtitle><description>A concept of a quadtree based nonsquare block coding structure is presented in this paper for the emerging High Efficiency Video Coding standard, which includes a quadtree based asymmetric motion partitioning scheme and a nonsquare quadtree transform (NSQT) algorithm. Nonsquare motion partitioning in inter frame coding provides the possibility of getting more accurate prediction results by splitting one coding block into two nonsquare prediction blocks. Contrary to the traditional symmetric motion partitions (SMP), asymmetric motion partitions (AMP) are proposed to improve the coding efficiency, especially for the coding blocks with irregular object boundaries. NSQT is designed for nonsquare prediction blocks (SMP and AMP), which combines square and nonsquare transform blocks in a unified transform structure. It exploits the directional characteristic of an image block to improve the transform efficiency. The combination of nonsquare partitions and NSQT provides high coding flexibility and low implementation cost for both encoder and decoder design. Simulation results show that about 0.9%-2.8% bit-rate saving can be achieved in terms of different configurations, and subjective quality can also be improved.</description><subject>Asymmetric motion partitions</subject><subject>Asymmetry</subject><subject>Blocking</subject><subject>Coding</subject><subject>Coding standards</subject><subject>Efficiency</subject><subject>Encoding</subject><subject>high efficiency video coding (HEVC)</subject><subject>nonsquare quadtree transform (NSQT)</subject><subject>Partitioning</subject><subject>Partitions</subject><subject>quadtree structure</subject><subject>Quadtrees</subject><subject>Studies</subject><subject>Transforms</subject><subject>Video coding</subject><issn>1051-8215</issn><issn>1558-2205</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkMtOwzAQRSMEEuXxA7CxxIZNisdx4mQJVXlIFQg16tZynDG4pDG1kwV_j6EVC1YzV3PuaOYmyQXQKQCtburZclVPGQU2ZYxlNBMHyQTyvEwZo_lh7GkOackgP05OQlhTCrzkYpLI11G1g0ckdypgS55dH7aj8lF3Tn-Q5eBHPYxRG-fJUz-gJ_debZDMXGv7N2J78mjf3sncGKst9vqLrGyLbj8_S46M6gKe7-tpUt_P69ljunh5eJrdLlKdVXxIs0rlggvQmuqGmRwaqgwvyxbBZLotGjCmFCJHkUFhigaxim9zTU2DrRbZaXK9W_vp3XbEMMiNDRq7TvXoxiChEMCLEkqI6NU_dO1G38fjJDDBCsoqVkWK7SjtXQgejfz0dqP8lwQqfyKXv5HLn8jlPvJoutyZLCL-GYqMcR6Jb9zSfNs</recordid><startdate>20121201</startdate><enddate>20121201</enddate><creator>Yuan Yuan</creator><creator>Il-Koo Kim</creator><creator>Xiaozhen Zheng</creator><creator>Lingzhi Liu</creator><creator>Xiaoran Cao</creator><creator>Lee, Sunil</creator><creator>Min-Su Cheon</creator><creator>Lee, T.</creator><creator>Yun He</creator><creator>Jeong-Hoon Park</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Nonsquare motion partitioning in inter frame coding provides the possibility of getting more accurate prediction results by splitting one coding block into two nonsquare prediction blocks. Contrary to the traditional symmetric motion partitions (SMP), asymmetric motion partitions (AMP) are proposed to improve the coding efficiency, especially for the coding blocks with irregular object boundaries. NSQT is designed for nonsquare prediction blocks (SMP and AMP), which combines square and nonsquare transform blocks in a unified transform structure. It exploits the directional characteristic of an image block to improve the transform efficiency. The combination of nonsquare partitions and NSQT provides high coding flexibility and low implementation cost for both encoder and decoder design. 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| subjects | Asymmetric motion partitions Asymmetry Blocking Coding Coding standards Efficiency Encoding high efficiency video coding (HEVC) nonsquare quadtree transform (NSQT) Partitioning Partitions quadtree structure Quadtrees Studies Transforms Video coding |
| title | Quadtree Based Nonsquare Block Structure for Inter Frame Coding in High Efficiency Video Coding |
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