{"links":{},"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00222284","sets":["1164:4619:10826:11058"]},"path":["11058"],"owner":"44499","recid":"222284","title":["卓球におけるボールの軌跡に基づくエッジボール判定"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-11-11"},"_buckets":{"deposit":"7ee527eb-58af-4709-a859-50ffdd432cea"},"_deposit":{"id":"222284","pid":{"type":"depid","value":"222284","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"卓球におけるボールの軌跡に基づくエッジボール判定","author_link":["583001","583002","582999","583000","583003"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"卓球におけるボールの軌跡に基づくエッジボール判定"}]},"item_type_id":"4","publish_date":"2022-11-11","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"立命館大学"},{"subitem_text_value":"立命館大学"},{"subitem_text_value":"立命館大学"},{"subitem_text_value":"大阪大学"},{"subitem_text_value":"立命館大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Ritsumeikan University","subitem_text_language":"en"},{"subitem_text_value":"Ritsumeikan University","subitem_text_language":"en"},{"subitem_text_value":"Ritsumeikan University","subitem_text_language":"en"},{"subitem_text_value":"Osaka University","subitem_text_language":"en"},{"subitem_text_value":"Ritsumeikan University","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/222284/files/IPSJ-CVIM22231029.pdf","label":"IPSJ-CVIM22231029.pdf"},"date":[{"dateType":"Available","dateValue":"2024-11-11"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-CVIM22231029.pdf","filesize":[{"value":"997.3 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":"20"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"06dd273a-1961-4c08-98ce-3bb355e11262","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2022 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"藤原, 雄太"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"孔, 祥博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 亜実"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西川, 広記"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"冨山, 宏之"}],"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":"近年，人間よりも正確な判断が可能だという理由から，画像処理技術がスポーツの分野で注目されており，ビデオ判定や自動審判の導入などが進められている．卓球もその一つであるが，その研究は，ボールや人の検出といったことに留まる．しかし卓球には，人の目で判断が困難なエッジボールが存在し，誤審の元となっている．また，国内リーグでは，エッジボール判定を含むビデオ判定システムが試験的に導入されたが，その内部は明かされておらず，アマチュアの試合で運用するのは困難である．そこで本論文では，卓球の動画像解析の中でもエッジボールに着目し，打球がインかアウトかを自動で判定するシステムを提案する．判定には，深層学習でのボール検出をもとに計算した軌跡に着目した，二つの手法を検討した．一つ目は，軌跡を二本の直線で表し，その二直線のなす角度から判定する方法である．二つ目は，二本の直線に加え，二次関数でも軌跡を表し，ボールの検出点と軌跡の平均二乗誤差から判定する方法である．それぞれ評価を行った結果，前者の手法では，人の目で見て明らかなエッジボールまでは正しく判定されたが，より際どいエッジボールについては判定を誤ることがあった．一方，後者では，前者で判定を誤ったエッジボールも正しく判定された．このことから，本論文の提案では，エッジボールを含む，打球のイン/アウトの判定には，ボールの検出点と軌跡の誤差を用いる方がよい結果を示した．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","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":"2022-11-11","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"29","bibliographicVolumeNumber":"2022-CVIM-231"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"created":"2025-01-19T01:22:14.805870+00:00","updated":"2025-01-19T13:48:04.094378+00:00","id":222284}