{"id":209840,"created":"2025-01-19T01:11:07.447517+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00209840","sets":["1164:4619:10416:10532"]},"path":["10532"],"owner":"44499","recid":"209840","title":["駅構内の案内サインを対象とした全天球画像による光学文字認識"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-02-25"},"_buckets":{"deposit":"d6a1ece9-490a-42be-8b0a-1b9f48cbe76e"},"_deposit":{"id":"209840","pid":{"type":"depid","value":"209840","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"駅構内の案内サインを対象とした全天球画像による光学文字認識","author_link":["530102","530103"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"駅構内の案内サインを対象とした全天球画像による光学文字認識"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"セッション6-1","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2021-02-25","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"明星大学大学院"},{"subitem_text_value":"明星大学"}]},"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/209840/files/IPSJ-CVIM21225042.pdf","label":"IPSJ-CVIM21225042.pdf"},"date":[{"dateType":"Available","dateValue":"2023-02-25"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-CVIM21225042.pdf","filesize":[{"value":"9.1 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":"20"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"892e5d25-ff1f-41c9-a695-cd73eb78cda1","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2021 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"比留川, 翔哉"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"丸山, 一貴"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11131797","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_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8701","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"文字認識は様々な場面で使用されている．我々は，駅構内にある案内サイン内の文字を認識することができれば，駅構内のナビゲーションに応用することができると考えた．本研究では，「文字認識を用いた駅構内のナビゲーション」という最終目標を達成するために，全天球カメラで駅構内の複数の案内サインを撮影し，その案内サインに含まれる文字を認識することを目的とする．本目的を達成するために，生成型学習法で生成した学習画像と畳み込みニューラルネットワークで文字認識する手法を提案する．文字認識の入力画像は，全天球カメラで撮影された全天球画像内の文字画像を用いる．本提案手法は，全天球画像から文字を抽出する 3 つのフェーズと文字認識，誤り訂正の合計 5 つのフェーズを使用する．駅で撮影した全天球画像を用いた評価実験では，看板抽出と文字認識では高い精度で抽出・識別できたが，辞書による誤り訂正は正しい認識を誤った結果に訂正してしまう結果となった．今後の課題として，認識率が低い文字種への対処と，文字セグメンテーションまでのフェーズにおける処理の改善を中心に進めていき，最終目標を達成することが挙げられる．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","bibliographic_titles":[{"bibliographic_title":"研究報告コンピュータビジョンとイメージメディア（CVIM）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2021-02-25","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"42","bibliographicVolumeNumber":"2021-CVIM-225"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"updated":"2025-01-19T18:22:25.592843+00:00","links":{}}