{"created":"2022-01-27T02:13:01.744094+00:00","id":2001990,"links":{},"metadata":{"_buckets":{"deposit":"6a3b12e4-9672-4d12-b813-8e7a85d4c792"},"_deposit":{"id":"2001990","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2001990"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02001990","sets":["1642837622505:1642837855274:1642837873975","1642838403551:1642838406845"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"A Noise-Smoothing Filter Based on Adaptive Windowing and Its Application to Penumbral Imaging","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Chen, Y.-W.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Arakawa, H.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Nakao, Z.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yamashita, K.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kodama, R.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"陳, 延偉","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"仲尾, 善勝","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Nakao, Zensho","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"penumbral imaging"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"local-statistic filter"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"adaptive windowing"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"signal-dependant noise"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Penumbral imaging is a technique which uses the facts that spatial information can be recovered from the shadow or penumbra that an unknown source casts through a simple large circular aperture. The technique is based on a linear deconvolution. In this paper, a two-step method is proposed for decoding penumbral images. First a local-statistic filter based on adaptive windowing is applied to smooth the noise; then, followed by the conventional linear deconvolution. The simulation results show that the reconstructed image is dramatically improved in comparison to that without the noise-smoothing filtering, and the proposed method is also applied to real experimetal x-ray imaging.","subitem_description_type":"Other"},{"subitem_description":"紀要論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学工学部"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"eng"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/1972"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0389-102X"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN0025048X"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"琉球大学工学部紀要"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueNumber":"54","bibliographicPageEnd":"52","bibliographicPageStart":"45"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"No54p45.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2001990/files/No54p45.pdf"},"version_id":"d0774f19-911a-4dd4-8934-d8e422116200"}]},"item_title":"A Noise-Smoothing Filter Based on Adaptive Windowing and Its Application to Penumbral Imaging","item_type_id":"15","owner":"1","path":["1642837873975","1642838406845"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2007-09-16"},"publish_date":"2007-09-16","publish_status":"0","recid":"2001990","relation_version_is_last":true,"title":["A Noise-Smoothing Filter Based on Adaptive Windowing and Its Application to Penumbral Imaging"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-02-14T21:20:16.203350+00:00"}