{"id":"https://openalex.org/W2942345632","doi":"https://doi.org/10.3390/computers8020030","title":"A Study of Image Upsampling and Downsampling Filters","display_name":"A Study of Image Upsampling and Downsampling Filters","publication_year":2019,"publication_date":"2019-04-23","ids":{"openalex":"https://openalex.org/W2942345632","doi":"https://doi.org/10.3390/computers8020030","mag":"2942345632"},"language":"en","primary_location":{"id":"doi:10.3390/computers8020030","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computers8020030","pdf_url":"https://www.mdpi.com/2073-431X/8/2/30/pdf?version=1561773278","source":{"id":"https://openalex.org/S4210228075","display_name":"Computers","issn_l":"2073-431X","issn":["2073-431X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computers","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2073-431X/8/2/30/pdf?version=1561773278","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102044494","display_name":"Drago\u0219 Dumitrescu","orcid":null},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Drago\u0219 Dumitrescu","raw_affiliation_strings":["Department of Computer Science & Engineering, Faculty of Automatic Control & Computers, Politehnica University of Bucharest, RO-060042 Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science & Engineering, Faculty of Automatic Control & Computers, Politehnica University of Bucharest, RO-060042 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5031177491","display_name":"Costin-Anton Boiangiu","orcid":"https://orcid.org/0000-0002-2987-4022"},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":true,"raw_author_name":"Costin-Anton Boiangiu","raw_affiliation_strings":["Department of Computer Science & Engineering, Faculty of Automatic Control & Computers, Politehnica University of Bucharest, RO-060042 Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science & Engineering, Faculty of Automatic Control & Computers, Politehnica University of Bucharest, RO-060042 Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5031177491"],"corresponding_institution_ids":["https://openalex.org/I61641377"],"apc_list":{"value":1600,"currency":"CHF","value_usd":1782},"apc_paid":{"value":1600,"currency":"CHF","value_usd":1782},"fwci":2.2607,"has_fulltext":true,"cited_by_count":56,"citation_normalized_percentile":{"value":0.89044457,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"8","issue":"2","first_page":"30","last_page":"30"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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/T11105","display_name":"Advanced Image Processing Techniques","score":0.9995999932289124,"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/T11019","display_name":"Image Enhancement Techniques","score":0.9968000054359436,"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/upsampling","display_name":"Upsampling","score":0.9806828498840332},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.6309108138084412},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.6226943731307983},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5615862607955933},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.526641845703125},{"id":"https://openalex.org/keywords/interpolation","display_name":"Interpolation (computer graphics)","score":0.5165161490440369},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4816912114620209},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.467926025390625},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.42109936475753784},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.40571245551109314},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.3284829258918762},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.32492658495903015},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.06534376740455627}],"concepts":[{"id":"https://openalex.org/C110384440","wikidata":"https://www.wikidata.org/wiki/Q1143270","display_name":"Upsampling","level":3,"score":0.9806828498840332},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.6309108138084412},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.6226943731307983},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5615862607955933},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.526641845703125},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.5165161490440369},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4816912114620209},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.467926025390625},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.42109936475753784},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.40571245551109314},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3284829258918762},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.32492658495903015},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.06534376740455627},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/computers8020030","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computers8020030","pdf_url":"https://www.mdpi.com/2073-431X/8/2/30/pdf?version=1561773278","source":{"id":"https://openalex.org/S4210228075","display_name":"Computers","issn_l":"2073-431X","issn":["2073-431X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computers","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:62d5de9a9a1542c4911465dfff6bab63","is_oa":true,"landing_page_url":"https://doaj.org/article/62d5de9a9a1542c4911465dfff6bab63","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Computers, Vol 8, Iss 2, p 30 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2073-431X/8/2/30/","is_oa":true,"landing_page_url":"http://doi.org/10.3390/computers8020030","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Computers","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/computers8020030","is_oa":true,"landing_page_url":"https://doi.org/10.3390/computers8020030","pdf_url":"https://www.mdpi.com/2073-431X/8/2/30/pdf?version=1561773278","source":{"id":"https://openalex.org/S4210228075","display_name":"Computers","issn_l":"2073-431X","issn":["2073-431X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computers","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1910611889","display_name":null,"funder_award_id":"PN-III-P1-1.2-PCCDI-2017-0689","funder_id":"https://openalex.org/F4320323983","funder_display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii"},{"id":"https://openalex.org/G4864199281","display_name":null,"funder_award_id":"PN- III -P1-1","funder_id":"https://openalex.org/F4320323983","funder_display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii"},{"id":"https://openalex.org/G788691142","display_name":null,"funder_award_id":"PN-III-P1-1.2-PCCDI","funder_id":"https://openalex.org/F4320323983","funder_display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii"}],"funders":[{"id":"https://openalex.org/F4320323983","display_name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii","ror":"https://ror.org/01q7jq182"},{"id":"https://openalex.org/F4320336189","display_name":"Colegiul Consultativ pentru Cercetare-Dezvoltare \u015fi Inovare","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2942345632.pdf","grobid_xml":"https://content.openalex.org/works/W2942345632.grobid-xml"},"referenced_works_count":46,"referenced_works":["https://openalex.org/W1481157510","https://openalex.org/W1548419986","https://openalex.org/W1555100670","https://openalex.org/W1966382373","https://openalex.org/W1967919068","https://openalex.org/W1977129889","https://openalex.org/W1987278426","https://openalex.org/W2003410902","https://openalex.org/W2046828849","https://openalex.org/W2050726069","https://openalex.org/W2050921210","https://openalex.org/W2051064533","https://openalex.org/W2054403892","https://openalex.org/W2063780179","https://openalex.org/W2065628492","https://openalex.org/W2073431334","https://openalex.org/W2075020252","https://openalex.org/W2077345580","https://openalex.org/W2088869937","https://openalex.org/W2096026309","https://openalex.org/W2113524221","https://openalex.org/W2113640817","https://openalex.org/W2117172213","https://openalex.org/W2118664057","https://openalex.org/W2123133830","https://openalex.org/W2128133720","https://openalex.org/W2133665775","https://openalex.org/W2134433631","https://openalex.org/W2136695293","https://openalex.org/W2150300252","https://openalex.org/W2151534576","https://openalex.org/W2153608957","https://openalex.org/W2156606640","https://openalex.org/W2157494358","https://openalex.org/W2158842967","https://openalex.org/W2160502247","https://openalex.org/W2160506249","https://openalex.org/W2172128189","https://openalex.org/W2184977454","https://openalex.org/W2333293832","https://openalex.org/W2493111484","https://openalex.org/W2567032824","https://openalex.org/W2887392554","https://openalex.org/W3139658123","https://openalex.org/W4253372241","https://openalex.org/W6686521546"],"related_works":["https://openalex.org/W2062399876","https://openalex.org/W2607795551","https://openalex.org/W3155117723","https://openalex.org/W1991429770","https://openalex.org/W1983892167","https://openalex.org/W2281134365","https://openalex.org/W4310746709","https://openalex.org/W4385574037","https://openalex.org/W4386075645","https://openalex.org/W4306309518"],"abstract_inverted_index":{"In":[0,98],"this":[1],"paper,":[2],"a":[3,26,101,128,136],"set":[4,102,130],"of":[5,12,29,55,103,127,131,139],"techniques":[6],"used":[7],"for":[8,51],"downsampling":[9,58],"and":[10,34,57,66,73,105,134],"upsampling":[11,56],"2D":[13],"images":[14],"is":[15,71,108,122],"analyzed":[16,78],"on":[17,40,111,114,124,135],"various":[18],"image":[19,117],"datasets.":[20,118],"The":[21,47,119],"comparison":[22],"takes":[23],"into":[24],"account":[25],"significant":[27],"number":[28],"interpolation":[30,42],"kernels,":[31],"their":[32,35,64],"parameters,":[33],"algebraical":[36],"form,":[37],"focusing":[38],"mostly":[39],"linear":[41],"methods":[43],"with":[44,79],"symmetric":[45],"kernels.":[46],"most":[48],"suitable":[49],"metrics":[50],"measuring":[52],"the":[53,74,82,99,125,140],"performance":[54],"filters\u2019":[59],"combinations":[60],"are":[61,77],"presented,":[62],"discussing":[63],"strengths":[65],"weaknesses.":[67],"A":[68],"test":[69],"benchmark":[70],"proposed,":[72],"obtained":[75],"results":[76],"respect":[80],"to":[81],"presented":[83],"metrics,":[84],"offering":[85],"explanations":[86],"about":[87],"specific":[88],"filter":[89],"behaviors":[90],"in":[91,95],"general,":[92],"or":[93],"just":[94],"certain":[96],"circumstances.":[97],"end,":[100],"filters":[104],"parameters":[106],"recommendations":[107],"offered":[109],"based":[110,123],"extensive":[112],"testing":[113],"carefully":[115],"selected":[116],"entire":[120],"research":[121,132],"study":[126],"large":[129],"papers":[133],"solid":[137],"discussion":[138],"underlying":[141],"signal":[142],"processing":[143],"theory.":[144]},"counts_by_year":[{"year":2026,"cited_by_count":6},{"year":2025,"cited_by_count":10},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":12},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":1}],"updated_date":"2026-08-13T07:04:57.449891","created_date":"2025-10-10T00:00:00"}