{"created":"2021-03-01T06:05:30.507647+00:00","id":1827,"links":{},"metadata":{"_buckets":{"deposit":"3d10e56c-b1e8-404e-a30f-899adf0de800"},"_deposit":{"id":"1827","owners":[],"pid":{"revision_id":0,"type":"depid","value":"1827"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00001827","sets":["423:424:425","453:454"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1998-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"12","bibliographicPageEnd":"2535","bibliographicPageStart":"2528","bibliographicVolumeNumber":"E81-B","bibliographic_titles":[{"bibliographic_title":"IEICE transactions on communications"},{"bibliographic_title":"IEICE transactions on communications","bibliographic_titleLang":"en"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"A zerotree image-coding scheme is introduced that effectively exploits the inter-scale self-similarities found in the octave decomposition by a wavelet transform. A zerotree is usuful for efficiently coding wavelet coefficients ; its efficiency was proved by Shapiro's EZW. In the EZW coder, wavelet coefficients are sympolized, then entropy-coded for further compression. In this paper, we analyze the symbols produced by the EZW coder and discuss the entropy for a symbol. We modify the procedure used for symbol-stream generation to produce lower entropy. First, we modify the fixed relation between a parent and children used in the EZW coder to raise the propability that a significant parent has significant children. The modified relation is flexibly modified again based on the observation that a significant coefficient is more likely to have significant coefficients in its neighborhood. The three relations are compared in terms of the number of symbols they produce.","subitem_description_type":"Abstract"}]},"item_5_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"5772","nameIdentifierScheme":"WEKO"}],"names":[{"name":"菊池, 久和"}]},{"nameIdentifiers":[{"nameIdentifier":"5773","nameIdentifierScheme":"WEKO"}],"names":[{"name":"佐々木, 重信"}]}]},"item_5_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Institute of Electronics, Information and Communication Engineers"}]},"item_5_relation_31":{"attribute_name":"異版である","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.ieice.org/jpn/trans_online/","subitem_relation_type_select":"URI"}}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"copyright©1998 IEICE（許諾番号07RB0183）"}]},"item_5_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA10826261","subitem_source_identifier_type":"NCID"}]},"item_5_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"09168516","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Joo, Sanghyun"}],"nameIdentifiers":[{"nameIdentifier":"5768","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kikuchi, Hisakazu"}],"nameIdentifiers":[{"nameIdentifier":"5769","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sasaki, Shigenobu"}],"nameIdentifiers":[{"nameIdentifier":"5770","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shin, Jaeho"}],"nameIdentifiers":[{"nameIdentifier":"5771","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-07-29"}],"displaytype":"detail","filename":"1_0022.pdf","filesize":[{"value":"752.7 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"1_0022.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/1827/files/1_0022.pdf"},"version_id":"8ec8701c-4b58-4710-b1a5-58f5d98735f6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"image compression","subitem_subject_scheme":"Other"},{"subitem_subject":"wavelet transform","subitem_subject_scheme":"Other"},{"subitem_subject":"zerotree coding","subitem_subject_scheme":"Other"},{"subitem_subject":"entropy coding","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"A new image coding technique with low entropy using a flexible zerotree","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"A new image coding technique with low entropy using a flexible zerotree"},{"subitem_title":"A new image coding technique with low entropy using a flexible zerotree","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["454","425"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-04-08"},"publish_date":"2008-04-08","publish_status":"0","recid":"1827","relation_version_is_last":true,"title":["A new image coding technique with low entropy using a flexible zerotree"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:34:41.369471+00:00"}