{"created":"2023-03-31T02:01:43.201978+00:00","id":4727,"links":{},"metadata":{"_buckets":{"deposit":"365dda69-4210-4b5d-8aab-1dfa95765670"},"_deposit":{"id":"4727","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"4727"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00004727","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"1302","bibliographicPageStart":"1296","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Shadows in remote sensing images often cause problems, especially in land-cover classification and change detection. Hence, it is very useful if the radiance of shadow areas is corrected to the same level as that of shadow-free areas. In this study, a radiance measurement was carried out to investigate the spectral characteristics of sunlight. Then a method is proposed for shadow detection and correction of optical imagery. First, building shadow areas are detected using an object-based classification method that employs brightness values and their relationship with the neighboring area. Next, the detected shadow areas are corrected using a linear function to produce a shadow-free image. The shadow pixels with different darkness levels are corrected by using different ratios to obtain a smoothly restored image. The proposed semi-automated method was applied to a QuickBird and a WorldView-2 images of Tokyo, Japan, to demonstrate the effectiveness of the method. c 2012 IEEE.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1109/JSTARS.2012.2189558"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2151-1535","subitem_source_identifier_type":"EISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Wen Liu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Fumio Yamazaki","creatorNameLang":"en"}]}]},"item_title":"Object-based shadow extraction and correction of high-resolution optical satellite images","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Object-based shadow extraction and correction of high-resolution optical satellite images","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"4727","relation_version_is_last":true,"title":["Object-based shadow extraction and correction of high-resolution optical satellite images"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-08T06:08:46.221631+00:00"}