{"links":{},"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00094439","sets":["1164:3925:7119:7228"]},"path":["7228"],"owner":"11","recid":"94439","title":["定量的劣化度調節可能なDCT係数交換による画像半開示スクランブル技法におけるファイルサイズ増加抑制に関する検討"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-07-11"},"_buckets":{"deposit":"430e48bd-44b7-480c-b734-34131860551d"},"_deposit":{"id":"94439","pid":{"type":"depid","value":"94439","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"定量的劣化度調節可能なDCT係数交換による画像半開示スクランブル技法におけるファイルサイズ増加抑制に関する検討","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"定量的劣化度調節可能なDCT係数交換による画像半開示スクランブル技法におけるファイルサイズ増加抑制に関する検討"},{"subitem_title":"An Evaluation on Controlling File Size Increase in the Image Partial Scrambling Technique Enabled Quantitative Degradation Degree Control by Exchanging DCT Coefficients","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2013-07-11","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"北海道大学大学院情報科学研究科"},{"subitem_text_value":"北海道大学大学院情報科学研究科"},{"subitem_text_value":"北海道大学大学院情報科学研究科"},{"subitem_text_value":"北海道大学大学院情報科学研究科"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Information Science and Technology, Hokkaido University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science and Technology, Hokkaido University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science and Technology, Hokkaido University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Information Science and Technology, Hokkaido 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/94439/files/IPSJ-CSEC13062024.pdf"},"date":[{"dateType":"Available","dateValue":"2100-01-01"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-CSEC13062024.pdf","filesize":[{"value":"2.0 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"30"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"e3470065-2686-4cb1-86ae-e7b94fe48248","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2013 by the Institute of Electronics, Information and Communication Engineers\nThis SIG report is only available to those in membership of the SIG."}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"島浦, 紳吾"},{"creatorName":"原田, 翔平"},{"creatorName":"姜, 錫"},{"creatorName":"坂本, 雄児"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Shingo, Shimaura","creatorNameLang":"en"},{"creatorName":"Shohei, Harada","creatorNameLang":"en"},{"creatorName":"Seok, Kang","creatorNameLang":"en"},{"creatorName":"Yuji, Sakamoto","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11235941","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":"可変長符号化前に半開示スクランブル処理を行う場合，DCT 係数の増減や交換などの係数操作により PSNＲ に基づいた定量的な劣化度調節が可能となる．しかし，スクランブル処理後のファイルサイズの増加や劣化度調節における正確度の低下などの課題がある．そこで本稿では，ファイルサイズの増加を抑制しつつ，目標画質に応じた劣化度調節の正確度を向上させる画像半開示スクランブル手法を提案する．本手法では，DCT 係数 １ つあたりが達成すべき二乗誤差量を基準に DCT 係数の交換を行うことでスクランブル処理を施す．また，劣化度調節の正確度やファイルサイズ増加率について他の手法と比較した．\n","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"The partial scrambling which is performed before variable length coding enables quantitative degradation degree control based on PSNR by fluctuation or exchange of DCT coefficients. However, those methods have problems with file size increase and accuracy deterioration of degradation degree control. Therefore, we proposed the image partial scrambling technique which enables controlling file size increase and improving accuracy of degra dation degree control. The proposed method exchanges DCT coefficients based on square error value which one DCT coefficient should reach. Then, we compared our method with other methods about accuracy of degradation\ndegree control and file size growth rate.\n","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セキュリティ（CSEC）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2013-07-11","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"24","bibliographicVolumeNumber":"2013-CSEC-62"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"created":"2025-01-18T23:41:45.040341+00:00","updated":"2025-01-21T14:36:09.670324+00:00","id":94439}