{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00038316","sets":["1164:3206:3237:3240"]},"path":["3240"],"owner":"1","recid":"38316","title":["大規模3次元メッシュを対象とした頑強な電子透かし"],"pubdate":{"attribute_name":"公開日","attribute_value":"2002-04-19"},"_buckets":{"deposit":"b54066e4-41dd-4761-8edc-c759b5221516"},"_deposit":{"id":"38316","pid":{"type":"depid","value":"38316","revision_id":0},"owners":[1],"status":"published","created_by":1},"item_title":"大規模3次元メッシュを対象とした頑強な電子透かし","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"大規模3次元メッシュを対象とした頑強な電子透かし"},{"subitem_title":"A Robust Watermarking Algorithm for Large - scale 3D Meshes","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2002-04-19","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"山梨大学大学院工学研究科電子情報工学専攻"},{"subitem_text_value":"山梨大学工学部コンピュータ・メディア工学科"},{"subitem_text_value":"東京大学大学院総合文化研究科広域システム科学系"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Engineering, Yamanashi University","subitem_text_language":"en"},{"subitem_text_value":"Computer Science Department, Yamanashi University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Arts and Sciences, University of Tokyo","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/38316/files/IPSJ-CG02107004.pdf"},"date":[{"dateType":"Available","dateValue":"2004-04-19"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-CG02107004.pdf","filesize":[{"value":"441.8 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":"28"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"f63a6c11-e9db-46e3-b3ed-52c85a4a58a0","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2002 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"向山, 明夫"},{"creatorName":"大渕竜太郎"},{"creatorName":"高橋, 成雄"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Akio, Mukaiyama","creatorNameLang":"en"},{"creatorName":"Ryutarou, Ohbuchi","creatorNameLang":"en"},{"creatorName":"Shigeo, Takahashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10100541","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":"以前我々が発表した3次元ポリゴンメッシュを対象とする電子透かし手法は，そのメッシュの幾何形状の「低周波」成分をメッシュスペクトルの領域で変更することで透かしを埋め込んだ．同手法はメッシュスムージング，部分切り取り，メッシュ簡単化などに耐性を持った．しかし，同手法はスペクトル分解にかかる計算コストが高く，さらに，複数の操作を合わせた妨害，例えば，メッシュ簡単化・相似変換・部分切り取りを合わせた妨害などで透かしが壊れる，という弱点を持っていた．本論文ではこれらの弱点を改善する手法を提案する．まず，計算コストを下げるため新たな固有値分解手法を導入した．また，より高精度の位置合わせを導入することで複数の操作を合わせた妨害に対する耐性を付加した．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"Our previous watermarking method for a three-dimensional (3D) polygonal mesh watermarked the meth by modifying the \"low-frequency\" component of the mesh's geometry in its mesh-spectral domain. Watermarks produced by the method are resistant against mesh smoothing, partial resection, and　mesh simplification. However the method suffered from high computational cost of the mesh spectral analysis and the watermarks produced are destroyed by attack that combined, for example, mesh simplification, similarity transformation and resection. This paper proposes remedies for these two shortcomings. To reduce computational costs, we applied an efficient eigne-analysis algorithm. Information of a better algorithm to register original and watermarked mesh improved resiliency of the algorithm against the combined attacks described above.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"24","bibliographic_titles":[{"bibliographic_title":"情報処理学会研究報告グラフィクスとCAD（CG）"}],"bibliographicPageStart":"19","bibliographicIssueDates":{"bibliographicIssueDate":"2002-04-19","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"33(2002-CG-107)","bibliographicVolumeNumber":"2002"}]},"relation_version_is_last":true,"weko_creator_id":"1"},"id":38316,"updated":"2025-01-22T13:24:03.499503+00:00","links":{},"created":"2025-01-18T23:05:56.809514+00:00"}