{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00236923","sets":["6504:11678:11684"]},"path":["11684"],"owner":"44499","recid":"236923","title":["ディープラーニングを使用した光源方向に依存しない点字文字認識"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-03-01"},"_buckets":{"deposit":"f789f742-a13e-420a-9249-779c1ef964e7"},"_deposit":{"id":"236923","pid":{"type":"depid","value":"236923","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"ディープラーニングを使用した光源方向に依存しない点字文字認識","author_link":["647808","647806","647807","647809"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ディープラーニングを使用した光源方向に依存しない点字文字認識"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"コンピュータと人間社会","subitem_subject_scheme":"Other"}]},"item_type_id":"22","publish_date":"2024-03-01","item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_22_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京高専"},{"subitem_text_value":"東京高専"},{"subitem_text_value":"東京高専"},{"subitem_text_value":"東京高専"}]},"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/236923/files/IPSJ-Z86-1ZJ-01.pdf","label":"IPSJ-Z86-1ZJ-01.pdf"},"date":[{"dateType":"Available","dateValue":"2024-07-04"}],"format":"application/pdf","filename":"IPSJ-Z86-1ZJ-01.pdf","filesize":[{"value":"369.8 kB"}],"mimetype":"application/pdf","accessrole":"open_date","version_id":"73c5bc59-3c12-4c6f-8f0a-3f06be7df1ad","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Information Processing Society of Japan"}]},"item_22_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"白川, 太地"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"八木, 悠河"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山下, 晃弘"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"松林, 勝志"}],"nameIdentifiers":[{}]}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_5794","resourcetype":"conference paper"}]},"item_22_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00349328","subitem_source_identifier_type":"NCID"}]},"item_22_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"盲学校や自治体では，点字文書を活字に変換するニーズが増えている．カメラ等で撮影された点字を認識するためには，凹凸の陰影を識別する必要があるため，従来の手法では，特定の方向からの光を受けた点字文書しか認識できない制約があった．本研究では，ディープラーニングを活用し，光源方向に依存しない点字文字認識技術を開発した．使用したフレームワークはPyTorchで，物体検出に特化したライブラリとしてdetectron2を採用した．そして，新たに「点字毎日」と従来のデータセットを組み合わせ，物体認識における精度指標のAP50において97%の認識精度を達成した．今後の課題として，認識精度の更なる向上と点字文書翻訳システムへの応用が挙げられる．","subitem_description_type":"Other"}]},"item_22_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"632","bibliographic_titles":[{"bibliographic_title":"第86回全国大会講演論文集"}],"bibliographicPageStart":"631","bibliographicIssueDates":{"bibliographicIssueDate":"2024-03-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicVolumeNumber":"2024"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":236923,"updated":"2025-01-19T09:04:03.230239+00:00","links":{},"created":"2025-01-19T01:39:15.610863+00:00"}