{"id":"https://openalex.org/W2162241001","doi":"https://doi.org/10.1016/s0031-3203(01)00024-3","title":"A pseudo top-hat mathematical morphological approach to edge detection in dark regions","display_name":"A pseudo top-hat mathematical morphological approach to edge detection in dark regions","publication_year":2002,"publication_date":"2002-01-01","ids":{"openalex":"https://openalex.org/W2162241001","doi":"https://doi.org/10.1016/s0031-3203(01)00024-3","mag":"2162241001"},"language":"en","primary_location":{"id":"doi:10.1016/s0031-3203(01)00024-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0031-3203(01)00024-3","pdf_url":null,"source":{"id":"https://openalex.org/S414566","display_name":"Pattern Recognition","issn_l":"0031-3203","issn":["0031-3203","1873-5142"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Pattern Recognition","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5033689816","display_name":"T. Chen","orcid":null},"institutions":[{"id":"https://openalex.org/I146655781","display_name":"University of Liverpool","ror":"https://ror.org/04xs57h96","country_code":"GB","type":"education","lineage":["https://openalex.org/I146655781"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"T. Chen","raw_affiliation_strings":["Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, UK","institution_ids":["https://openalex.org/I146655781"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016939864","display_name":"Qinghua Wu","orcid":"https://orcid.org/0000-0002-0598-8367"},"institutions":[{"id":"https://openalex.org/I146655781","display_name":"University of Liverpool","ror":"https://ror.org/04xs57h96","country_code":"GB","type":"education","lineage":["https://openalex.org/I146655781"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Q.H. Wu","raw_affiliation_strings":["Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Electronics, The University of Liverpool, Liverpool, L69 3GJ, UK","institution_ids":["https://openalex.org/I146655781"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5098636363","display_name":"R. Rahmani-Torkaman","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R. Rahmani-Torkaman","raw_affiliation_strings":["Manufacturing Systems Engineering Technology, BICC General UK Cables Limited, Wrexham, LL13 9PH, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Manufacturing Systems Engineering Technology, BICC General UK Cables Limited, Wrexham, LL13 9PH, UK","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5053465857","display_name":"John P. Hughes","orcid":"https://orcid.org/0000-0002-8816-6800"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. Hughes","raw_affiliation_strings":["Manufacturing Systems Engineering Technology, BICC General UK Cables Limited, Wrexham, LL13 9PH, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Manufacturing Systems Engineering Technology, BICC General UK Cables Limited, Wrexham, LL13 9PH, UK","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5016939864"],"corresponding_institution_ids":["https://openalex.org/I146655781"],"apc_list":{"value":2850,"currency":"USD","value_usd":2850},"apc_paid":null,"fwci":1.9046,"has_fulltext":false,"cited_by_count":107,"citation_normalized_percentile":{"value":0.88221427,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"35","issue":"1","first_page":"199","last_page":"210"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10052","display_name":"Medical Image Segmentation Techniques","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10052","display_name":"Medical Image Segmentation Techniques","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12111","display_name":"Industrial Vision Systems and Defect Detection","score":0.9957000017166138,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12549","display_name":"Image and Object Detection Techniques","score":0.9948999881744385,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/thresholding","display_name":"Thresholding","score":0.8488329648971558},{"id":"https://openalex.org/keywords/edge-detection","display_name":"Edge detection","score":0.7802809476852417},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.7207381129264832},{"id":"https://openalex.org/keywords/enhanced-data-rates-for-gsm-evolution","display_name":"Enhanced Data Rates for GSM Evolution","score":0.6976678371429443},{"id":"https://openalex.org/keywords/transformation","display_name":"Transformation (genetics)","score":0.6574000716209412},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6323449015617371},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6013852953910828},{"id":"https://openalex.org/keywords/morphological-gradient","display_name":"Morphological gradient","score":0.5961477756500244},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.5675855278968811},{"id":"https://openalex.org/keywords/mathematical-morphology","display_name":"Mathematical morphology","score":0.5081875324249268},{"id":"https://openalex.org/keywords/image-segmentation","display_name":"Image segmentation","score":0.499359130859375},{"id":"https://openalex.org/keywords/deriche-edge-detector","display_name":"Deriche edge detector","score":0.4796760082244873},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.46290501952171326},{"id":"https://openalex.org/keywords/canny-edge-detector","display_name":"Canny edge detector","score":0.4512917995452881},{"id":"https://openalex.org/keywords/image-gradient","display_name":"Image gradient","score":0.44926923513412476},{"id":"https://openalex.org/keywords/image-processing","display_name":"Image processing","score":0.4254457950592041},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.4041192829608917}],"concepts":[{"id":"https://openalex.org/C191178318","wikidata":"https://www.wikidata.org/wiki/Q2256906","display_name":"Thresholding","level":3,"score":0.8488329648971558},{"id":"https://openalex.org/C193536780","wikidata":"https://www.wikidata.org/wiki/Q1513153","display_name":"Edge detection","level":4,"score":0.7802809476852417},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7207381129264832},{"id":"https://openalex.org/C162307627","wikidata":"https://www.wikidata.org/wiki/Q204833","display_name":"Enhanced Data Rates for GSM Evolution","level":2,"score":0.6976678371429443},{"id":"https://openalex.org/C204241405","wikidata":"https://www.wikidata.org/wiki/Q461499","display_name":"Transformation (genetics)","level":3,"score":0.6574000716209412},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6323449015617371},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6013852953910828},{"id":"https://openalex.org/C96133863","wikidata":"https://www.wikidata.org/wiki/Q6913458","display_name":"Morphological gradient","level":5,"score":0.5961477756500244},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.5675855278968811},{"id":"https://openalex.org/C185568154","wikidata":"https://www.wikidata.org/wiki/Q530242","display_name":"Mathematical morphology","level":4,"score":0.5081875324249268},{"id":"https://openalex.org/C124504099","wikidata":"https://www.wikidata.org/wiki/Q56933","display_name":"Image segmentation","level":3,"score":0.499359130859375},{"id":"https://openalex.org/C167074055","wikidata":"https://www.wikidata.org/wiki/Q5262565","display_name":"Deriche edge detector","level":5,"score":0.4796760082244873},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.46290501952171326},{"id":"https://openalex.org/C14705441","wikidata":"https://www.wikidata.org/wiki/Q597183","display_name":"Canny edge detector","level":5,"score":0.4512917995452881},{"id":"https://openalex.org/C182037307","wikidata":"https://www.wikidata.org/wiki/Q17039097","display_name":"Image gradient","level":5,"score":0.44926923513412476},{"id":"https://openalex.org/C9417928","wikidata":"https://www.wikidata.org/wiki/Q1070689","display_name":"Image processing","level":3,"score":0.4254457950592041},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.4041192829608917},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0031-3203(01)00024-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0031-3203(01)00024-3","pdf_url":null,"source":{"id":"https://openalex.org/S414566","display_name":"Pattern Recognition","issn_l":"0031-3203","issn":["0031-3203","1873-5142"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Pattern Recognition","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Sustainable cities and communities","score":0.6100000143051147,"id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1560188253","https://openalex.org/W1575739010","https://openalex.org/W1587641199","https://openalex.org/W1999737656","https://openalex.org/W2026534853","https://openalex.org/W2054457389","https://openalex.org/W2122053111","https://openalex.org/W2123385460","https://openalex.org/W2164741953","https://openalex.org/W2673969421"],"related_works":["https://openalex.org/W2357157193","https://openalex.org/W1973828670","https://openalex.org/W2060672349","https://openalex.org/W3110410354","https://openalex.org/W2356467611","https://openalex.org/W2383398997","https://openalex.org/W2546615884","https://openalex.org/W2140201873","https://openalex.org/W2394248373","https://openalex.org/W2373164917"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":4},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":6},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":11},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":8}],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}