{"created":"2023-07-25T10:25:35.105355+00:00","id":3978,"links":{},"metadata":{"_buckets":{"deposit":"b4c954dd-3893-47cd-b157-3c780f88e331"},"_deposit":{"created_by":4,"id":"3978","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"3978"},"status":"published"},"_oai":{"id":"oai:naist.repo.nii.ac.jp:00003978","sets":["34:35"]},"author_link":["7448","342","215","144","7449"],"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Energy-aware Video Streaming System with QoS Adaptation Based on Inter-segment Importance","subitem_alternative_title_language":"en"}]},"item_7_biblio_info_9":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-02-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"555","bibliographicPageStart":"546","bibliographicVolumeNumber":"46","bibliographic_titles":[{"bibliographic_title":"情報処理学会論文誌","bibliographic_titleLang":"ja"}]}]},"item_7_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_7_description_7":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"本論文では，携帯端末でのストリーミングビデオの再生において，バッテリ残量，希望再生時間および場面ごとの重要度を考慮し再生品質の制御を行う方式を提案する．提案方式では，ビデオコンテンツを構成するビデオセグメントは，いくつかのカテゴリに分類されており，その情報がMPEG-7などの言語で記述されていると仮定する．ユーザは，カテゴリ間での再生品質に対する相対的な重要度，および，各カテゴリに対する，画面表示の滑らかさ，鮮明さ，音の各項目の相対的な重要度を指定する．以上の情報から，バッテリ残量の範囲内で希望再生時間を満足するための各カテゴリの再生品質を，与えられた重要度に従い決定する．提案方式に基づき，サーバからのビデオストリームを任意のパラメータ値を持つビデオストリームに実時間変換するトランスコーダと携帯端末上で実行可能なプレイヤからなるシステムを実装した．提案方式により，重要度の高いセグメントの再生品質を，重要度の値に従い，品質一定とした場合の品質に比べ最大2 倍程度まで向上でき，実際のビデオを用いた実験においても，希望再生時間と実際に再生可能であった時間が6%以内に収まる誤差で制御できることを確認した．","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"In this paper, we propose a QoS adaptation method for streaming video playback for portable computing devices where playback quality of each video fragment is automatically adjusted from the remaining battery amount, desirable playback duration and the user's preference to each fragment. In our method, we assume that video segments (or shots) are classified into some predefined categories. Each user specifies relative importance among categories and preferred video property such as motion speed and vividness for each category. From the information, playback quality and property of each category are determined so that the video playback can last for the specified duration within the battery amount. We have implemented a video streaming system consisting of a transcoder for PCs and a video player for portable computing devices. Experimental results show that playback quality of important categories can be improved a few times better than flattening the playback quality and that the prediction error of playback duration is within 6%.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_7_publisher_10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"一般社団法人情報処理学会","subitem_publisher_language":"ja"}]},"item_7_rights_11":{"attribute_name":"出版者URL","attribute_value_mlt":[{"subitem_rights":"http://id.nii.ac.jp/1001/00010712/ "}]},"item_7_rights_18":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"ここに掲載した著作物の利用に関する注意 本著作物の著作権は情報処理学会に帰属します。本著作物は著作権者である情報処理学会の許可のもとに掲載するものです。ご利用に当たっては「著作権法」ならびに「情報処理学会倫理綱領」に従うことをお願いいたします。Notice for the use of this material The copyright of this material is retained by the Information Processing Society of Japan (IPSJ). This material is published on this web site with the agreement of the author (s) and the IPSJ. Please be complied with Copyright Law of Japan and the Code of Ethics of the IPSJ if any users wish to reproduce, make derivative work, distribute or make available to the public any part or whole thereof.","subitem_rights_language":"ja"},{"subitem_rights":"Copyright c 2005 by the Information Processing Society of Japan","subitem_rights_language":"en"}]},"item_7_source_id_12":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-7764","subitem_source_identifier_type":"ISSN"}]},"item_7_source_id_14":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA1150975X","subitem_source_identifier_type":"NCID"}]},"item_7_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"孫, Tao","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"7448","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"玉井, 森彦","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"342","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"90523077","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=90523077"}]},{"creatorNames":[{"creatorName":"安本, 慶一","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"215","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"40273396","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=40273396"}]},{"creatorNames":[{"creatorName":"柴田, 直樹","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"144","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"40335477","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=40335477"}]},{"creatorNames":[{"creatorName":"伊藤, 実","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"7449","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2023-03-02"}],"displaytype":"detail","filename":"IPSJ-JNL4602022.pdf","filesize":[{"value":"192.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"fulltext","objectType":"fulltext","url":"https://naist.repo.nii.ac.jp/record/3978/files/IPSJ-JNL4602022.pdf"},"version_id":"0315ae69-17ab-4bf4-a7f4-6cb03eb75447"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"場面の重要度に基づいて再生品質制御を行う省電力ビデオストリーミングシステム","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"場面の重要度に基づいて再生品質制御を行う省電力ビデオストリーミングシステム","subitem_title_language":"ja"}]},"item_type_id":"7","owner":"4","path":["35"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2016-11-24"},"publish_date":"2016-11-24","publish_status":"0","recid":"3978","relation_version_is_last":true,"title":["場面の重要度に基づいて再生品質制御を行う省電力ビデオストリーミングシステム"],"weko_creator_id":"4","weko_shared_id":-1},"updated":"2023-11-17T06:22:22.648360+00:00"}