{"id":"https://openalex.org/W2912485670","doi":"https://doi.org/10.34028/iajit/16/1/1","title":"An Automatic Localization of Optic Disc in Low Resolution Retinal Images by Modified Directional Matched Filter","display_name":"An Automatic Localization of Optic Disc in Low Resolution Retinal Images by Modified Directional Matched Filter","publication_year":2018,"publication_date":"2018-01-01","ids":{"openalex":"https://openalex.org/W2912485670","doi":"https://doi.org/10.34028/iajit/16/1/1","mag":"2912485670"},"language":"en","primary_location":{"id":"doi:10.34028/iajit/16/1/1","is_oa":true,"landing_page_url":"https://doi.org/10.34028/iajit/16/1/1","pdf_url":"https://doi.org/10.34028/iajit/16/1/1","source":{"id":"https://openalex.org/S100666833","display_name":"The International Arab Journal of Information Technology","issn_l":"1683-3198","issn":["1683-3198","2309-4524"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4362726017","host_organization_name":"Zarqa University","host_organization_lineage":["https://openalex.org/P4362726017"],"host_organization_lineage_names":["Zarqa University"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The International Arab Journal of Information Technology","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.34028/iajit/16/1/1","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Murugan Raman","orcid":null},"institutions":[{"id":"https://openalex.org/I33585257","display_name":"Anna University, Chennai","ror":"https://ror.org/01qhf1r47","country_code":"IN","type":"education","lineage":["https://openalex.org/I33585257"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Murugan Raman","raw_affiliation_strings":["College of Engineering Guindy, Anna University, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Engineering Guindy, Anna University, India","institution_ids":["https://openalex.org/I33585257"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026461824","display_name":"Reeba Korah","orcid":"https://orcid.org/0000-0003-1661-5037"},"institutions":[{"id":"https://openalex.org/I144614875","display_name":"Alliance University","ror":"https://ror.org/03f4gsr42","country_code":"IN","type":"education","lineage":["https://openalex.org/I144614875"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Reeba Korah","raw_affiliation_strings":["Alliance College of Engineering and Design, Alliance University, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Alliance College of Engineering and Design, Alliance University, India","institution_ids":["https://openalex.org/I144614875"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5104063911","display_name":"Kavitha Tamilselvan","orcid":null},"institutions":[{"id":"https://openalex.org/I33585257","display_name":"Anna University, Chennai","ror":"https://ror.org/01qhf1r47","country_code":"IN","type":"education","lineage":["https://openalex.org/I33585257"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Kavitha Tamilselvan","raw_affiliation_strings":["New Prince Shri Bhavani College of Engineering and Technology, Anna University, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"New Prince Shri Bhavani College of Engineering and Technology, Anna University, India","institution_ids":["https://openalex.org/I33585257"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.1106,"has_fulltext":true,"cited_by_count":21,"citation_normalized_percentile":{"value":0.79876286,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"16","issue":"1","first_page":"1","last_page":"7"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11438","display_name":"Retinal Imaging and Analysis","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11438","display_name":"Retinal Imaging and Analysis","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12599","display_name":"Retinal and Optic Conditions","score":0.9711999893188477,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10250","display_name":"Glaucoma and retinal disorders","score":0.9682999849319458,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/optic-disc","display_name":"Optic disc","score":0.8688575625419617},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7532490491867065},{"id":"https://openalex.org/keywords/optic-nerve","display_name":"Optic nerve","score":0.6957774758338928},{"id":"https://openalex.org/keywords/retinal","display_name":"Retinal","score":0.6842936873435974},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.6077145338058472},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.5805708169937134},{"id":"https://openalex.org/keywords/optic-disk","display_name":"Optic disk","score":0.5443387627601624},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.5242446064949036},{"id":"https://openalex.org/keywords/resolution","display_name":"Resolution (logic)","score":0.4668341875076294},{"id":"https://openalex.org/keywords/optic-cup","display_name":"Optic cup (embryology)","score":0.4393700361251831},{"id":"https://openalex.org/keywords/low-resolution","display_name":"Low resolution","score":0.4178566634654999},{"id":"https://openalex.org/keywords/high-resolution","display_name":"High resolution","score":0.2953646779060364},{"id":"https://openalex.org/keywords/ophthalmology","display_name":"Ophthalmology","score":0.26579710841178894},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.12950512766838074}],"concepts":[{"id":"https://openalex.org/C2779735895","wikidata":"https://www.wikidata.org/wiki/Q16873995","display_name":"Optic disc","level":3,"score":0.8688575625419617},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7532490491867065},{"id":"https://openalex.org/C2780837183","wikidata":"https://www.wikidata.org/wiki/Q186029","display_name":"Optic nerve","level":2,"score":0.6957774758338928},{"id":"https://openalex.org/C2780827179","wikidata":"https://www.wikidata.org/wiki/Q422001","display_name":"Retinal","level":2,"score":0.6842936873435974},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.6077145338058472},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.5805708169937134},{"id":"https://openalex.org/C2983497740","wikidata":"https://www.wikidata.org/wiki/Q16873995","display_name":"Optic disk","level":3,"score":0.5443387627601624},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.5242446064949036},{"id":"https://openalex.org/C138268822","wikidata":"https://www.wikidata.org/wiki/Q1051925","display_name":"Resolution (logic)","level":2,"score":0.4668341875076294},{"id":"https://openalex.org/C96021297","wikidata":"https://www.wikidata.org/wiki/Q7098791","display_name":"Optic cup (embryology)","level":5,"score":0.4393700361251831},{"id":"https://openalex.org/C3019883945","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Low resolution","level":3,"score":0.4178566634654999},{"id":"https://openalex.org/C3020199158","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"High resolution","level":2,"score":0.2953646779060364},{"id":"https://openalex.org/C118487528","wikidata":"https://www.wikidata.org/wiki/Q161437","display_name":"Ophthalmology","level":1,"score":0.26579710841178894},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.12950512766838074},{"id":"https://openalex.org/C127716648","wikidata":"https://www.wikidata.org/wiki/Q104053","display_name":"Phenotype","level":3,"score":0.0},{"id":"https://openalex.org/C114696181","wikidata":"https://www.wikidata.org/wiki/Q5422650","display_name":"Eye development","level":4,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","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},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"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/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.34028/iajit/16/1/1","is_oa":true,"landing_page_url":"https://doi.org/10.34028/iajit/16/1/1","pdf_url":"https://doi.org/10.34028/iajit/16/1/1","source":{"id":"https://openalex.org/S100666833","display_name":"The International Arab Journal of Information Technology","issn_l":"1683-3198","issn":["1683-3198","2309-4524"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4362726017","host_organization_name":"Zarqa University","host_organization_lineage":["https://openalex.org/P4362726017"],"host_organization_lineage_names":["Zarqa University"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The International Arab Journal of Information Technology","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.34028/iajit/16/1/1","is_oa":true,"landing_page_url":"https://doi.org/10.34028/iajit/16/1/1","pdf_url":"https://doi.org/10.34028/iajit/16/1/1","source":{"id":"https://openalex.org/S100666833","display_name":"The International Arab Journal of Information Technology","issn_l":"1683-3198","issn":["1683-3198","2309-4524"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4362726017","host_organization_name":"Zarqa University","host_organization_lineage":["https://openalex.org/P4362726017"],"host_organization_lineage_names":["Zarqa University"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The International Arab Journal of Information Technology","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.7900000214576721,"id":"https://metadata.un.org/sdg/3"}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2912485670.pdf","grobid_xml":"https://content.openalex.org/works/W2912485670.grobid-xml"},"referenced_works_count":24,"referenced_works":["https://openalex.org/W1585932041","https://openalex.org/W1992086640","https://openalex.org/W2007089830","https://openalex.org/W2023422286","https://openalex.org/W2069454046","https://openalex.org/W2081178133","https://openalex.org/W2086986013","https://openalex.org/W2099509743","https://openalex.org/W2104324599","https://openalex.org/W2118823856","https://openalex.org/W2122644916","https://openalex.org/W2133059825","https://openalex.org/W2150769593","https://openalex.org/W2152201689","https://openalex.org/W2155561710","https://openalex.org/W2159314398","https://openalex.org/W2166524747","https://openalex.org/W2170203892","https://openalex.org/W2185678883","https://openalex.org/W2399112153","https://openalex.org/W6677760498","https://openalex.org/W6680096826","https://openalex.org/W6755215094","https://openalex.org/W6758619496"],"related_works":["https://openalex.org/W2791439505","https://openalex.org/W2169255130","https://openalex.org/W2779576471","https://openalex.org/W2081178133","https://openalex.org/W3131680944","https://openalex.org/W300732441","https://openalex.org/W2374040720","https://openalex.org/W3180652865","https://openalex.org/W2798412772","https://openalex.org/W1586266070"],"abstract_inverted_index":{"An":[0],"automatic":[1],"optic":[2,85],"disc":[3],"localization":[4,57],"in":[5,26,40,61,92],"retinal":[6,28,42,64,77,102],"images":[7,103],"used":[8],"to":[9,21,37,51,80,120],"screen":[10],"eye":[11],"related":[12],"diseases":[13],"like":[14],"diabetic":[15],"retinopathy.":[16],"Many":[17],"techniques":[18],"are":[19,32],"available":[20,36],"detect":[22,38],"Optic":[23,59,108],"Disc":[24,60],"(OD)":[25],"high-resolution":[27],"images.":[29,43,65],"Unfortunately,":[30],"there":[31],"no":[33],"efficient":[34],"methods":[35],"OD":[39],"low-resolution":[41],"The":[44,87],"objective":[45],"of":[46,58,75,84,107,124],"this":[47],"research":[48],"paper":[49,67],"is":[50],"develop":[52],"an":[53,122],"automated":[54],"method":[55,89],"for":[56],"low":[62,100],"resolution":[63,101],"This":[66],"proposes":[68],"a":[69],"modified":[70],"directional":[71],"matched":[72],"filter":[73],"parameters":[74],"the":[76,82,105,115],"blood":[78],"vessels":[79],"localize":[81],"center":[83],"disc.":[86],"proposed":[88],"was":[90,118],"implemented":[91],"MATLAB":[93],"and":[94,98,114],"evaluated":[95],"both":[96],"normal":[97],"abnormal":[99],"using":[104],"subset":[106],"Nerve":[109],"Head":[110],"Segmentation":[111],"Dataset":[112],"(ONHSD)":[113],"success":[116],"percentage":[117],"found":[119],"be":[121],"average":[123],"96.96%":[125],"with":[126],"23seconds":[127]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":10},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
