{"_buckets": {"deposit": "fa7b407f-33a8-4a23-ae6a-6bb5a41a7a13"}, "_deposit": {"id": "1733", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "1733"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00001733", "sets": ["454", "425"]}, "item_5_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2000-02", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "971", "bibliographicPageStart": "965", "bibliographicVolumeNumber": "38", "bibliographic_titles": [{"bibliographic_title": "IEEE transactions on geoscience and remote sensing"}, {"bibliographic_title": "IEEE transactions on geoscience and remote sensing", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "This paper proposes two effective numerical methods to solve the optimal problem of contrast enhancement for the coherent and incoherent cases, respectively. For the coherent case, the objective function of the optimal problem is transformed into a bilinear form. Then a numerical method is presented by using the idea of the Sequential Unconstrained Minimization Technique (SUMT). For the incoherent case, a cross-iterative method is proposed for solving the optimal problem of contrast enhancement, based on the formula of the optimal contrast polarization state in the matched-polarized channel. Both the proposed methods are convergent and straightforward for programming. In addition, the proposed methods can be used for the bistatic radar case because in this paper, it is unnecessary to restrict the symmetry of the scattering matrix and the Kennaugh matrix. For showing the effectiveness of the proposed methods, the authors give three examples. The results of the calculation are completely identical with other papers\u0027, showing the validity of the proposed methods. In these three examples, if the receiving polarization state is independent of the transmitting\u0027s, the power ratios may be much larger than those in the cases of the co-polarized, the cross-polarized, and the matched-polarized channels, showing the importance of the considered models. In addition, the computation costs are estimated by these illustrative examples, illustrating that the proposed methods are very effective", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "19", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Yamaguchi, Yoshio"}, {"name": "山口, 芳雄"}]}]}, "item_5_publisher_7": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "IEEE"}]}, "item_5_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "info:doi/10.1109/36.841978", "subitem_relation_type_select": "DOI"}}]}, "item_5_rights_15": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "©(2000) IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained the IEEE."}]}, "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": "AA00231483", "subitem_source_identifier_type": "NCID"}]}, "item_5_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "01962892", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Yang, J."}], "nameIdentifiers": [{"nameIdentifier": "5293", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yamaguchi, Y."}], "nameIdentifiers": [{"nameIdentifier": "19", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Boerner, W. -M."}], "nameIdentifiers": [{"nameIdentifier": "5295", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Lin, S."}], "nameIdentifiers": [{"nameIdentifier": "5296", "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", "download_preview_message": "", "file_order": 0, "filename": "Yamachuchi(Numerical methods).pdf", "filesize": [{"value": "146.2 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 146200.0, "url": {"label": "Yamachuchi(Numerical methods).pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/1733/files/Yamachuchi(Numerical methods).pdf"}, "version_id": "56026ff7-629d-4154-977d-f59f5ffeb81e"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "Polarimetric contrast", "subitem_subject_scheme": "Other"}, {"subitem_subject": "polarization", "subitem_subject_scheme": "Other"}, {"subitem_subject": "radar polarimetry", "subitem_subject_scheme": "Other"}, {"subitem_subject": "scattering matrix", "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": "Numerical methods for solving the optimal problem of contrast enhancement", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Numerical methods for solving the optimal problem of contrast enhancement"}, {"subitem_title": "Numerical methods for solving the optimal problem of contrast enhancement", "subitem_title_language": "en"}]}, "item_type_id": "5", "owner": "1", "path": ["454", "425"], "permalink_uri": "http://hdl.handle.net/10191/4995", "pubdate": {"attribute_name": "公開日", "attribute_value": "2007-09-10"}, "publish_date": "2007-09-10", "publish_status": "0", "recid": "1733", "relation": {}, "relation_version_is_last": true, "title": ["Numerical methods for solving the optimal problem of contrast enhancement"], "weko_shared_id": null}