{"id":41231,"updated":"2025-01-22T12:03:10.602000+00:00","links":{},"created":"2025-01-18T23:08:09.240119+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00041231","sets":["1164:3616:3637:3638"]},"path":["3638"],"owner":"1","recid":"41231","title":["周波数特性に基づくH.264/AVCイントラ予測モード決定手法に関する検討"],"pubdate":{"attribute_name":"公開日","attribute_value":"2004-12-10"},"_buckets":{"deposit":"585e5e78-e312-472c-8173-056a0f824f8d"},"_deposit":{"id":"41231","pid":{"type":"depid","value":"41231","revision_id":0},"owners":[1],"status":"published","created_by":1},"item_title":"周波数特性に基づくH.264/AVCイントラ予測モード決定手法に関する検討","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"周波数特性に基づくH.264/AVCイントラ予測モード決定手法に関する検討"},{"subitem_title":"H.264/AVC Intra - prediction Mode Decision based on Frequency Characteristic","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2004-12-10","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"早稲田大学大学院国際情報通信研究科"},{"subitem_text_value":"早稲田大学国際情報通信研究センター／株式会社メディアグルー"},{"subitem_text_value":"早稲田大学国際情報通信研究センター／株式会社メディアグルー"},{"subitem_text_value":"早稲田大学大学院国際情報通信研究科"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"GITS WASEDA University","subitem_text_language":"en"},{"subitem_text_value":"GITI Waseda University/Media Glue Corp.","subitem_text_language":"en"},{"subitem_text_value":"GITI Waseda University/Media Glue Corp.","subitem_text_language":"en"},{"subitem_text_value":"GITS WASEDA University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/41231/files/IPSJ-AVM04047027.pdf"},"date":[{"dateType":"Available","dateValue":"2006-12-10"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-AVM04047027.pdf","filesize":[{"value":"692.9 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"27"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"46631c41-5b53-434a-851e-815c5fc72ab5","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2004 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"筑波, 健史"},{"creatorName":"永吉, 功"},{"creatorName":"花村, 剛"},{"creatorName":"富永, 英義"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Takeshi, Tsukuba","creatorNameLang":"en"},{"creatorName":"Isao, Nagayoshi","creatorNameLang":"en"},{"creatorName":"Tsuyoshi, Hanamura","creatorNameLang":"en"},{"creatorName":"Hideyoshi, Tominaga","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10438399","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本稿では、H.264/AVCの符号化における処理量を低減するために、4×4イントラ予測モードの効果的な選択手法を提案する。イントラ予測において、原信号を周波数領域で見たときに、エネルギーが多く集中した領域を低減させることが予測効率の向上に有効であると考えられる。そこで提案手法では、変換係数の低周波成分の係数レベルを特徴量として、周波数分布の性質を8種類のパターンに分類し、分類結果に基づき評価対象の予測モードを限定することで処理量を低減する。提案手法を参照ソフトウェアに実装し、PSNR、符号量、処理量の観点から評価を行った。実験結果より、提案手法は参照ソフトウェアと比較して符号化効率をほとんど低下させずに、処理量を6割程度削減できることが確認できた。","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"In this paper,we propose efficient mode decision schemes for intra 4 ×4 predeciton mode to reduce the complexity of the H.264/AVC encoder.We consider that reducing the area where mudh more energy exits on the DCT domain may improve the efficiency of intra-prediction.In our proposed shemes,the encoder complexity is reduced by limitting the prediction modes with result that the frequency distribution is categorized into 8 parts according to the features extracted from the low-frequency components on the DCT domain. Our proposed schemes are evaluated from viewpoints of PSNR,Bitrate,and the encoder complexity. Experimental results show that the proposed schemes reduce the complexity by nearly 60% while maintaing similar PSNR and Bitrate.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"166","bibliographic_titles":[{"bibliographic_title":"情報処理学会研究報告オーディオビジュアル複合情報処理（AVM）"}],"bibliographicPageStart":"161","bibliographicIssueDates":{"bibliographicIssueDate":"2004-12-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"126(2004-AVM-047)","bibliographicVolumeNumber":"2004"}]},"relation_version_is_last":true,"weko_creator_id":"1"}}