{"id":"https://openalex.org/W2127438136","doi":"https://doi.org/10.1155/s1110865702203133","title":"Combined Frequency and Spatial Domain Algorithm for the Removal of Blocking Artifacts","display_name":"Combined Frequency and Spatial Domain Algorithm for the Removal of Blocking Artifacts","publication_year":2002,"publication_date":"2002-06-26","ids":{"openalex":"https://openalex.org/W2127438136","doi":"https://doi.org/10.1155/s1110865702203133","mag":"2127438136"},"language":"en","primary_location":{"id":"doi:10.1155/s1110865702203133","is_oa":true,"landing_page_url":"https://doi.org/10.1155/s1110865702203133","pdf_url":"https://asp-eurasipjournals.springeropen.com/counter/pdf/10.1155/S1110865702203133","source":{"id":"https://openalex.org/S35920007","display_name":"EURASIP Journal on Advances in Signal Processing","issn_l":"1110-8657","issn":["1110-8657","1687-0433","1687-6172","1687-6180"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Advances in Signal Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://asp-eurasipjournals.springeropen.com/counter/pdf/10.1155/S1110865702203133","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"George A. Triantafyllidis","orcid":null},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"George A. Triantafyllidis","raw_affiliation_strings":["Information Processing Laboratory, Electrical and Computer Engineering Department, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Information Processing Laboratory, Electrical and Computer Engineering Department, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece","institution_ids":["https://openalex.org/I21370196"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087452615","display_name":"Dimitrios Tzovaras","orcid":"https://orcid.org/0000-0001-6915-6722"},"institutions":[{"id":"https://openalex.org/I4210093649","display_name":"Information Technologies Institute","ror":"https://ror.org/0069akp70","country_code":"GR","type":"nonprofit","lineage":["https://openalex.org/I4210093649"]},{"id":"https://openalex.org/I4210134249","display_name":"Centre for Research and Technology Hellas","ror":"https://ror.org/03bndpq63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I4210134249"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Dimitrios Tzovaras","raw_affiliation_strings":["Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece","institution_ids":["https://openalex.org/I4210093649","https://openalex.org/I4210134249"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032132302","display_name":"Demetrios G. Sampson","orcid":"https://orcid.org/0000-0002-0174-0137"},"institutions":[{"id":"https://openalex.org/I4210093649","display_name":"Information Technologies Institute","ror":"https://ror.org/0069akp70","country_code":"GR","type":"nonprofit","lineage":["https://openalex.org/I4210093649"]},{"id":"https://openalex.org/I4210134249","display_name":"Centre for Research and Technology Hellas","ror":"https://ror.org/03bndpq63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I4210134249"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Demetrios Sampson","raw_affiliation_strings":["Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece","institution_ids":["https://openalex.org/I4210093649","https://openalex.org/I4210134249"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044696253","display_name":"M.G. Strintzis","orcid":null},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]},{"id":"https://openalex.org/I4210093649","display_name":"Information Technologies Institute","ror":"https://ror.org/0069akp70","country_code":"GR","type":"nonprofit","lineage":["https://openalex.org/I4210093649"]},{"id":"https://openalex.org/I4210134249","display_name":"Centre for Research and Technology Hellas","ror":"https://ror.org/03bndpq63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I4210134249"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Michael G. Strintzis","raw_affiliation_strings":["Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece","Information Processing Laboratory, Electrical and Computer Engineering Department, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Informatics and Telematics Institute, 1st Km Thermi-Panorama Road, Thermi-Thessaloniki, 57001, Greece","institution_ids":["https://openalex.org/I4210093649","https://openalex.org/I4210134249"]},{"raw_affiliation_string":"Information Processing Laboratory, Electrical and Computer Engineering Department, Aristotle University of Thessaloniki, Thessaloniki, 54006, Greece","institution_ids":["https://openalex.org/I21370196"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I21370196"],"apc_list":{"value":1665,"currency":"USD","value_usd":1665},"apc_paid":{"value":1665,"currency":"USD","value_usd":1665},"fwci":0.0,"has_fulltext":true,"cited_by_count":9,"citation_normalized_percentile":{"value":0.15778903,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"2002","issue":"6","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":1.0,"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":1.0,"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":0.9997000098228455,"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/T11165","display_name":"Image and Video Quality Assessment","score":0.9990000128746033,"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/blocking","display_name":"Blocking (statistics)","score":0.7857300043106079},{"id":"https://openalex.org/keywords/discrete-cosine-transform","display_name":"Discrete cosine transform","score":0.769629180431366},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6575186252593994},{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.6486949920654297},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.5789859890937805},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5782228112220764},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.5683386325836182},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.5217705368995667},{"id":"https://openalex.org/keywords/basis","display_name":"Basis (linear algebra)","score":0.4662429690361023},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4645172655582428},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.46245718002319336},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.4324977993965149},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.39234480261802673},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.38019609451293945},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.34525424242019653}],"concepts":[{"id":"https://openalex.org/C144745244","wikidata":"https://www.wikidata.org/wiki/Q4927286","display_name":"Blocking (statistics)","level":2,"score":0.7857300043106079},{"id":"https://openalex.org/C2221639","wikidata":"https://www.wikidata.org/wiki/Q2877","display_name":"Discrete cosine transform","level":3,"score":0.769629180431366},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6575186252593994},{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.6486949920654297},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.5789859890937805},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5782228112220764},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.5683386325836182},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.5217705368995667},{"id":"https://openalex.org/C12426560","wikidata":"https://www.wikidata.org/wiki/Q189569","display_name":"Basis (linear algebra)","level":2,"score":0.4662429690361023},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4645172655582428},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.46245718002319336},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.4324977993965149},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.39234480261802673},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.38019609451293945},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.34525424242019653},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1155/s1110865702203133","is_oa":true,"landing_page_url":"https://doi.org/10.1155/s1110865702203133","pdf_url":"https://asp-eurasipjournals.springeropen.com/counter/pdf/10.1155/S1110865702203133","source":{"id":"https://openalex.org/S35920007","display_name":"EURASIP Journal on Advances in Signal Processing","issn_l":"1110-8657","issn":["1110-8657","1687-0433","1687-6172","1687-6180"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Advances in Signal Processing","raw_type":"journal-article"},{"id":"pmh:oai:pure.atira.dk:openaire/91dd26b0-cc90-4156-ac81-c314485372d9","is_oa":true,"landing_page_url":"https://vbn.aau.dk/da/publications/91dd26b0-cc90-4156-ac81-c314485372d9","pdf_url":null,"source":{"id":"https://openalex.org/S4306401731","display_name":"VBN Forskningsportal (Aalborg Universitet)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I891191580","host_organization_name":"Aalborg University","host_organization_lineage":["https://openalex.org/I891191580"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Triantafyllidis, G A, Tzovaras, D, Sampson, D & Strintzis, M G 2002, 'Combined frequency and spatial domain algorithm for the removal of blocking artifacts', Eurasip Journal on Applied Signal Processing, vol. 2002, no. 6, pp. 601-612. https://doi.org/10.1155/S1110865702203133","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.134.7649","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.134.7649","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.iti.gr/files/issue-6_jasp.pdf","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.396.7408","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.396.7408","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://asp.eurasipjournals.com/content/pdf/1687-6180-2002-971438.pdf","raw_type":"text"},{"id":"pmh:oai:doaj.org/article:dd7d03650b304fa8acb050fb1449368d","is_oa":true,"landing_page_url":"https://doaj.org/article/dd7d03650b304fa8acb050fb1449368d","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":"EURASIP Journal on Advances in Signal Processing, Vol 2002, Iss 6, p 971438 (2002)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1155/s1110865702203133","is_oa":true,"landing_page_url":"https://doi.org/10.1155/s1110865702203133","pdf_url":"https://asp-eurasipjournals.springeropen.com/counter/pdf/10.1155/S1110865702203133","source":{"id":"https://openalex.org/S35920007","display_name":"EURASIP Journal on Advances in Signal Processing","issn_l":"1110-8657","issn":["1110-8657","1687-0433","1687-6172","1687-6180"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EURASIP Journal on Advances in Signal Processing","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.5799999833106995,"id":"https://metadata.un.org/sdg/8","display_name":"Decent work and economic growth"}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2127438136.pdf","grobid_xml":"https://content.openalex.org/works/W2127438136.grobid-xml"},"referenced_works_count":52,"referenced_works":["https://openalex.org/W78602796","https://openalex.org/W1487275211","https://openalex.org/W1492380776","https://openalex.org/W1540920731","https://openalex.org/W1556611829","https://openalex.org/W1563743568","https://openalex.org/W1597053676","https://openalex.org/W1634005169","https://openalex.org/W1794468485","https://openalex.org/W1916685473","https://openalex.org/W1991244327","https://openalex.org/W1993068585","https://openalex.org/W2040903332","https://openalex.org/W2084661252","https://openalex.org/W2098616111","https://openalex.org/W2102173687","https://openalex.org/W2104878351","https://openalex.org/W2108272243","https://openalex.org/W2108569186","https://openalex.org/W2110475356","https://openalex.org/W2110693269","https://openalex.org/W2113214070","https://openalex.org/W2113641518","https://openalex.org/W2114586165","https://openalex.org/W2116609734","https://openalex.org/W2117780481","https://openalex.org/W2121482916","https://openalex.org/W2124020876","https://openalex.org/W2125350829","https://openalex.org/W2125922987","https://openalex.org/W2126674612","https://openalex.org/W2127295759","https://openalex.org/W2129984353","https://openalex.org/W2131165675","https://openalex.org/W2133914077","https://openalex.org/W2140196014","https://openalex.org/W2141620200","https://openalex.org/W2146842127","https://openalex.org/W2150153756","https://openalex.org/W2152271242","https://openalex.org/W2153797887","https://openalex.org/W2154005911","https://openalex.org/W2154555188","https://openalex.org/W2164777063","https://openalex.org/W2166769054","https://openalex.org/W2168756588","https://openalex.org/W2170669373","https://openalex.org/W2917583897","https://openalex.org/W4229842957","https://openalex.org/W6660586467","https://openalex.org/W6681397841","https://openalex.org/W6682566117"],"related_works":["https://openalex.org/W1916685473","https://openalex.org/W2055682261","https://openalex.org/W1993363272","https://openalex.org/W2186390138","https://openalex.org/W2060035984","https://openalex.org/W2790129917","https://openalex.org/W2992856432","https://openalex.org/W2392835431","https://openalex.org/W2100638064","https://openalex.org/W2127787376"],"abstract_inverted_index":{"A":[0],"novel":[1],"combined":[2],"frequency":[3],"and":[4,59,100,144,162,188],"spatial":[5,61],"domain":[6],"method":[7,23,95,185],"is":[8,64,73,96,118,135],"presented":[9,187],"in":[10,28,124],"this":[11],"paper":[12],"for":[13,16,66,110],"blockiness":[14,67],"reduction":[15,112],"low":[17],"bit":[18],"rate":[19],"compressed":[20],"images.":[21],"The":[22,69,89,128],"consists":[24],"of":[25,33,54,71,78,81,85,92,102,113,131,147,157,167,182],"two":[26,104],"stages:":[27],"the":[29,34,47,76,82,86,93,97,111,132,139,142,145,148,155,158,165,168,174,180,183],"first,":[30],"better":[31],"estimates":[32],"reconstructed":[35],"DCT":[36,171],"coefficients":[37,172],"are":[38,107,151,186],"obtained":[39],"based":[40],"on":[41,75],"their":[42],"observed":[43],"probability":[44],"distribution.":[45],"In":[46],"second,":[48],"an":[49,79],"efficient":[50,98,129],"postprocessing":[51,175],"scheme":[52],"consisting":[53],"a":[55,60],"region":[56,161],"classification":[57],"algorithm":[58,134],"adaptive":[62],"filtering":[63,72],"applied":[65],"removal.":[68],"type":[70],"decided":[74],"basis":[77],"estimation":[80],"local":[83,159],"characteristics":[84,156],"coded":[87],"image.":[88],"main":[90],"advantage":[91],"proposed":[94,133,184],"combination":[99],"design":[101],"these":[103],"stages":[105],"which":[106],"acting":[108],"complementarily":[109],"blocking":[114,126],"artifacts.":[115,127],"This":[116],"approach":[117],"shown":[119],"to":[120,138,154,164],"produce":[121],"excellent":[122],"results":[123,178],"removing":[125],"performance":[130,181],"due,":[136],"firstly,":[137],"proposition":[140],"that":[141],"shape":[143],"position":[146],"filter":[149],"kernel":[150],"adjusted":[152],"according":[153],"image":[160],"secondly,":[163],"employment":[166],"modified":[169],"improved":[170],"by":[173],"filter.":[176],"Experimental":[177],"illustrating":[179],"evaluated.":[189]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":3}],"updated_date":"2026-08-04T08:18:43.703281","created_date":"2025-10-10T00:00:00"}