{"updated":"2025-01-23T02:40:07.210077+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00010746","sets":["581:625:637"]},"path":["637"],"owner":"1","recid":"10746","title":["投影法の混在を考慮した逆遠近法"],"pubdate":{"attribute_name":"公開日","attribute_value":"2005-01-15"},"_buckets":{"deposit":"67eb7186-16b5-4b57-93b6-129b7972581f"},"_deposit":{"id":"10746","pid":{"type":"depid","value":"10746","revision_id":0},"owners":[1],"status":"published","created_by":1},"item_title":"投影法の混在を考慮した逆遠近法","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"投影法の混在を考慮した逆遠近法"},{"subitem_title":"An Inverted Perspective Considering Mixture of Projective Methods","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"論文","subitem_subject_scheme":"Other"}]},"item_type_id":"2","publish_date":"2005-01-15","item_2_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"山口大学工学部"},{"subitem_text_value":"山口大学大学院理工学研究科"},{"subitem_text_value":"山口大学工学部"}]},"item_2_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Faculty of Engineering, Yamaguchi University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Science and Engineering, Yamaguchi University","subitem_text_language":"en"},{"subitem_text_value":"Faculty of Engineering, Yamaguchi University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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/10746/files/IPSJ-JNL4601025.pdf"},"date":[{"dateType":"Available","dateValue":"2007-01-15"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-JNL4601025.pdf","filesize":[{"value":"1.9 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"8"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"e9b38530-b090-4ab9-b4ba-6b45e8169e7e","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2005 by the Information Processing Society of Japan"}]},"item_2_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"長, 篤志"},{"creatorName":"原田, 哲也"},{"creatorName":"木下, 武志"}],"nameIdentifiers":[{}]}]},"item_2_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Atsushi, Osa","creatorNameLang":"en"},{"creatorName":"Tetsuya, Harada","creatorNameLang":"en"},{"creatorName":"Takeshi, Kinoshita","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_2_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00116647","subitem_source_identifier_type":"NCID"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_6501","resourcetype":"journal article"}]},"item_2_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-7764","subitem_source_identifier_type":"ISSN"}]},"item_2_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本論文では，3 次元コンピュータ・グラフィックスにおける逆遠近法を提案する．逆遠近法とは絵画における描画法の1 つであり，通常の透視投影法とは逆に遠くよりも近くの物体の方が画面上で小さく描かれることをいう．提案手法では，移動する視点から見た投影像をまとめることによって3 次元コンピュータ・グラフィックスにおける逆遠近法を実現している．また，逆遠近法で描かれた絵画によく見られるように，画面内に異なる投影法によって描かれた物体が混在する場合を想定している．そのため通常の透視投影法によって描画された画面内において，一部の物体のみを逆遠近法によって投影できる．しかも，対象物体に反射，透過・屈折による質感表現と影付けが可能であるという特徴を持つ．また，逆遠近法によって線遠近法による奥行き手がかりが崩れたとしても，投影像において有効な奥行き手がかりである物体の重なり，位置関係，大きさに関して，透視投影時の投影像の状態をほぼ保持することが可能である．","subitem_description_type":"Other"}]},"item_2_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"We propose an algorithm of inverted perspective for 3-dimensional computer graphics. The inverted perspective is a technique for drawings and pictures. Objects near a viewpoint are drawn smaller than far objects. This characteristic is opposite to the ordinary perspective. The proposed algorithm draws 3-dimensional computer graphics using the inverted perspective by patching projected images from multi-viewpoints. The algorithm considers mixture of projective methods in an image plane. The mixture of projective methods is a popular usage of the inverted perspective on ordinary drawings and pictures. Therefore, the algorithm can draw only part of objects by the inverted perspective in an image projected by the ordinary perspective. Moreover, reflection, refraction for material representation, and shadowing can be used. In the inveted perspective, the liner perspective is broken, but the proposed algorithm can maintain three depth cues that are oclusions, positions, and size of objects in an image plane.","subitem_description_type":"Other"}]},"item_2_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"266","bibliographic_titles":[{"bibliographic_title":"情報処理学会論文誌"}],"bibliographicPageStart":"255","bibliographicIssueDates":{"bibliographicIssueDate":"2005-01-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicVolumeNumber":"46"}]},"relation_version_is_last":true,"item_2_alternative_title_2":{"attribute_name":"その他タイトル","attribute_value_mlt":[{"subitem_alternative_title":"コンピュータグラフィックス"}]},"weko_creator_id":"1"},"created":"2025-01-18T22:45:34.202997+00:00","id":10746,"links":{}}