{"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"},"item_5_biblio_info_6":{"attribute_name":"\u66f8\u8a8c\u60c5\u5831","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":"\u6284\u9332","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":"\u8457\u8005\u5225\u540d","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"5772","nameIdentifierScheme":"WEKO"}],"names":[{"name":"\u83ca\u6c60, \u4e45\u548c"}]},{"nameIdentifiers":[{"nameIdentifier":"5773","nameIdentifierScheme":"WEKO"}],"names":[{"name":"\u4f50\u3005\u6728, \u91cd\u4fe1"}]}]},"item_5_publisher_7":{"attribute_name":"\u51fa\u7248\u8005","attribute_value_mlt":[{"subitem_publisher":"The Institute of Electronics, Information and Communication Engineers"}]},"item_5_relation_31":{"attribute_name":"\u7570\u7248\u3067\u3042\u308b","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":"\u6a29\u5229","attribute_value_mlt":[{"subitem_rights":"copyright\u00a91998 IEICE\uff08\u8a31\u8afe\u756a\u53f707RB0183\uff09"}]},"item_5_select_19":{"attribute_name":"\u8457\u8005\u7248\u30d5\u30e9\u30b0","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_11":{"attribute_name":"\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID","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":"\u8457\u8005","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":"\u30d5\u30a1\u30a4\u30eb\u60c5\u5831","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":"\u30ad\u30fc\u30ef\u30fc\u30c9","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":"\u8a00\u8a9e","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"\u8cc7\u6e90\u30bf\u30a4\u30d7","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":"\u30bf\u30a4\u30c8\u30eb","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":["453/454","423/424/425"],"pubdate":{"attribute_name":"\u516c\u958b\u65e5","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":"2021-03-01T20:52:31.969966+00:00"}