{"created":"2023-05-15T15:29:16.156949+00:00","id":18916,"links":{},"metadata":{"_buckets":{"deposit":"e238b5cb-0898-4c16-a4be-f1f5d8caec2d"},"_deposit":{"created_by":15,"id":"18916","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"18916"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00018916","sets":["94:429:431:432:955"]},"author_link":[],"item_113_alternative_title_1":{"attribute_name":"タイトル（別言語）","attribute_value_mlt":[{"subitem_alternative_title":"画像パワースペクトルスパース性に基づく画像処理技術"}]},"item_113_biblio_info_9":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019","bibliographicIssueDateType":"Issued"}}]},"item_113_date_35":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2020-03-02","subitem_date_issued_type":"Created"}]},"item_113_date_granted_20":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2019-03-20"}]},"item_113_degree_grantor_22":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"埼玉大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"12401","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_113_degree_name_21":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(工学)"}]},"item_113_description_13":{"attribute_name":"形態","attribute_value_mlt":[{"subitem_description":"102 p.","subitem_description_type":"Other"}]},"item_113_description_24":{"attribute_name":"目次","attribute_value_mlt":[{"subitem_description":"Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11\nAbstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12\n\n1 Introduction   15\n1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15\n1.2 Problem Statements and Objectives . . . . . . . . . . . . . . . . . . 16\n1.3 Overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17\n1.4 Organization of the Thesis . . . . . . . . . . . . . . . . . . . . . . . 19\n\n2 Parametric Wiener Filter Based on Image Power Spectrum Sparsity   20\n2.1 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20\n2.2 Parametric Wiener Filter . . . . . . . . . . . . . . . . . . . . . . . . 22\n2.2.1 Wiener Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 22\n2.2.2 Parametric Wiener Filter (PWF) . . . . . . . . . . . . . . 23\n2.2.3 Noise Variance Estimation . . . . . . . . . . . . . . . . . . . 25\n2.2.4 Best-Parameter Determination . . . . . . . . . . . . . . . . . 27\n2.3 Parameter Estimation . . . . . . . . . . . . . . . . . . . . . . . . . 28\n2.3.1 Power Spectrum Sparsity of an Image . . . . . . . . . . . . . 28\n2.4 Implementation of Parametric Wiener Filter . . . . . . . . . . . . . 37\n2.5 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . 38\n2.6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57\n\n3 Noise Level Estimation on Weak-Texture Patch using Image Power Spectrum Sparsity   58\n3.1 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59\n3.2 Noise Level Estimation . . . . . . . . . . . . . . . . . . . . . . . . . 60\n3.2.1 Weak-Texture Image Patch . . . . . . . . . . . . . . . . . . 61\n3.2.2 Noise Level Estimation . . . . . . . . . . . . . . . . . . . . . 63\n3.3 Implementation of Proposed Method . . . . . . . . . . . . . . . . . 65\n3.4 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . 66\n3.5 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76\n\n4 Flexible Edge Component Detection by Image Power Spectrum Sparsity   77\n4.1 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78\n4.2 Proposed Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79\n4.2.1 Power Spectrum Sparsity . . . . . . . . . . . . . . . . . . . . 81\n4.2.2 Edge component Determination by Thresholding . . . . . . 82\n4.2.3 Diagram of Proposed Method . . . . . . . . . . . . . . . . . 84\n4.3 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . 85\n4.4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91\n\n5 Conclusion and Future Work   92\n5.1 Summary of the Research . . . . . . . . . . . . . . . . . . . . . . . 92\n5.2 Future Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94","subitem_description_type":"Other"}]},"item_113_description_25":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"指導教員 : 島村徹也","subitem_description_type":"Other"}]},"item_113_description_33":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_113_description_34":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_113_dissertation_number_19":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第1127号"}]},"item_113_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24561/00018885","subitem_identifier_reg_type":"JaLC"}]},"item_113_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"埼玉大学大学院理工学研究科"}]},"item_113_publisher_12":{"attribute_name":"出版者名（別言語）","attribute_value_mlt":[{"subitem_publisher":"Graduate School of Science and Engineering, Saitama 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