{"id":"https://openalex.org/W2294302971","doi":"https://doi.org/10.1109/icip.2015.7351268","title":"Adaptive quantisation in HEVC for contouring artefacts removal in UHD content","display_name":"Adaptive quantisation in HEVC for contouring artefacts removal in UHD content","publication_year":2015,"publication_date":"2015-09-01","ids":{"openalex":"https://openalex.org/W2294302971","doi":"https://doi.org/10.1109/icip.2015.7351268","mag":"2294302971"},"language":"en","primary_location":{"id":"doi:10.1109/icip.2015.7351268","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2015.7351268","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Conference on Image Processing (ICIP)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/11379/468361","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5007971107","display_name":"Nicolo Casali","orcid":null},"institutions":[{"id":"https://openalex.org/I79940851","display_name":"University of Brescia","ror":"https://ror.org/02q2d2610","country_code":"IT","type":"education","lineage":["https://openalex.org/I79940851"]},{"id":"https://openalex.org/I2801884250","display_name":"British Broadcasting Corporation (United Kingdom)","ror":"https://ror.org/01qepzr42","country_code":"GB","type":"funder","lineage":["https://openalex.org/I2801884250"]}],"countries":["GB","IT"],"is_corresponding":true,"raw_author_name":"Nicolo Casali","raw_affiliation_strings":["British Broadcasting Corporation - Research and Development, London, United Kingdom","Universit\u00e0 degli Studi di Brescia, Brescia, Italy"],"affiliations":[{"raw_affiliation_string":"British Broadcasting Corporation - Research and Development, London, United Kingdom","institution_ids":["https://openalex.org/I2801884250"]},{"raw_affiliation_string":"Universit\u00e0 degli Studi di Brescia, Brescia, Italy","institution_ids":["https://openalex.org/I79940851"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063077156","display_name":"Matteo Naccari","orcid":null},"institutions":[{"id":"https://openalex.org/I2801884250","display_name":"British Broadcasting Corporation (United Kingdom)","ror":"https://ror.org/01qepzr42","country_code":"GB","type":"funder","lineage":["https://openalex.org/I2801884250"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Matteo Naccari","raw_affiliation_strings":["British Broadcasting Corporation - Research and Development, London, United Kingdom"],"affiliations":[{"raw_affiliation_string":"British Broadcasting Corporation - Research and Development, London, United Kingdom","institution_ids":["https://openalex.org/I2801884250"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083550803","display_name":"Marta Mrak","orcid":"https://orcid.org/0000-0002-7777-0252"},"institutions":[{"id":"https://openalex.org/I2801884250","display_name":"British Broadcasting Corporation (United Kingdom)","ror":"https://ror.org/01qepzr42","country_code":"GB","type":"funder","lineage":["https://openalex.org/I2801884250"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Marta Mrak","raw_affiliation_strings":["British Broadcasting Corporation - Research and Development, London, United Kingdom"],"affiliations":[{"raw_affiliation_string":"British Broadcasting Corporation - Research and Development, London, United Kingdom","institution_ids":["https://openalex.org/I2801884250"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5077643154","display_name":"Riccardo Leonardi","orcid":"https://orcid.org/0000-0003-0755-1924"},"institutions":[{"id":"https://openalex.org/I79940851","display_name":"University of Brescia","ror":"https://ror.org/02q2d2610","country_code":"IT","type":"education","lineage":["https://openalex.org/I79940851"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Riccardo Leonardi","raw_affiliation_strings":["Universit\u00e0 degli Studi di Brescia, Brescia, Italy"],"affiliations":[{"raw_affiliation_string":"Universit\u00e0 degli Studi di Brescia, Brescia, Italy","institution_ids":["https://openalex.org/I79940851"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5007971107"],"corresponding_institution_ids":["https://openalex.org/I2801884250","https://openalex.org/I79940851"],"apc_list":null,"apc_paid":null,"fwci":0.2894,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.5974393,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"2577","last_page":"2581"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10741","display_name":"Video Coding and Compression Technologies","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10741","display_name":"Video Coding and Compression Technologies","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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":0.9997000098228455,"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/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"}}],"keywords":[{"id":"https://openalex.org/keywords/contouring","display_name":"Contouring","score":0.8805091381072998},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.7899482846260071},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7165999412536621},{"id":"https://openalex.org/keywords/pixel","display_name":"Pixel","score":0.6109853982925415},{"id":"https://openalex.org/keywords/bit-rate","display_name":"Bit rate","score":0.5925735831260681},{"id":"https://openalex.org/keywords/coding","display_name":"Coding (social sciences)","score":0.5902222990989685},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.549342691898346},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5228220224380493},{"id":"https://openalex.org/keywords/computer-graphics","display_name":"Computer graphics (images)","score":0.4354686737060547},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.22686076164245605},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1727534532546997}],"concepts":[{"id":"https://openalex.org/C2779104521","wikidata":"https://www.wikidata.org/wiki/Q23058469","display_name":"Contouring","level":2,"score":0.8805091381072998},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.7899482846260071},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7165999412536621},{"id":"https://openalex.org/C160633673","wikidata":"https://www.wikidata.org/wiki/Q355198","display_name":"Pixel","level":2,"score":0.6109853982925415},{"id":"https://openalex.org/C2987812609","wikidata":"https://www.wikidata.org/wiki/Q194158","display_name":"Bit rate","level":2,"score":0.5925735831260681},{"id":"https://openalex.org/C179518139","wikidata":"https://www.wikidata.org/wiki/Q5140297","display_name":"Coding (social sciences)","level":2,"score":0.5902222990989685},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.549342691898346},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5228220224380493},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.4354686737060547},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.22686076164245605},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1727534532546997},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icip.2015.7351268","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2015.7351268","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE International Conference on Image Processing (ICIP)","raw_type":"proceedings-article"},{"id":"pmh:oai:iris.unibs.it:11379/468361","is_oa":true,"landing_page_url":"http://hdl.handle.net/11379/468361","pdf_url":null,"source":{"id":"https://openalex.org/S4306400804","display_name":"Institutional Research Information System (Universit\u00e0 degli Studi di Brescia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I66752286","host_organization_name":"University of Milano-Bicocca","host_organization_lineage":["https://openalex.org/I66752286"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":{"id":"pmh:oai:iris.unibs.it:11379/468361","is_oa":true,"landing_page_url":"http://hdl.handle.net/11379/468361","pdf_url":null,"source":{"id":"https://openalex.org/S4306400804","display_name":"Institutional Research Information System (Universit\u00e0 degli Studi di Brescia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I66752286","host_organization_name":"University of Milano-Bicocca","host_organization_lineage":["https://openalex.org/I66752286"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W1964133494","https://openalex.org/W1994387337","https://openalex.org/W1998371349","https://openalex.org/W2043311369","https://openalex.org/W2100403032","https://openalex.org/W2101700394","https://openalex.org/W2103760252","https://openalex.org/W2128444614","https://openalex.org/W2144307231","https://openalex.org/W2150560898","https://openalex.org/W2154709565","https://openalex.org/W2161276900","https://openalex.org/W2979673094","https://openalex.org/W6675207249","https://openalex.org/W6681394459","https://openalex.org/W6683514934"],"related_works":["https://openalex.org/W2028761375","https://openalex.org/W2915337797","https://openalex.org/W2360204191","https://openalex.org/W2968335000","https://openalex.org/W2044363672","https://openalex.org/W2366163563","https://openalex.org/W2163885456","https://openalex.org/W4384947721","https://openalex.org/W2292802682","https://openalex.org/W1986748663"],"abstract_inverted_index":{"Contouring":[0],"artefacts":[1,47],"affect":[2],"the":[3,26,29,38,42,59,73,82,92],"visual":[4],"experience":[5],"of":[6,10,28],"some":[7],"particular":[8],"types":[9],"compressed":[11],"Ultra":[12],"High":[13],"Definition":[14],"(UHD)":[15],"sequences":[16],"characterised":[17],"by":[18,88],"smoothly":[19],"textured":[20],"areas":[21],"and":[22,62],"gradual":[23],"transitions":[24],"in":[25,97],"value":[27],"pixels.":[30],"This":[31,77],"paper":[32],"proposes":[33],"a":[34,64,89],"technique":[35],"to":[36,70],"adjust":[37],"quantisation":[39,93],"process":[40],"at":[41,58],"encoder":[43],"so":[44],"that":[45],"contouring":[46],"are":[48],"avoided.":[49],"The":[50],"devised":[51],"method":[52,90],"does":[53],"not":[54],"require":[55],"any":[56],"change":[57],"decoder":[60],"side":[61],"introduces":[63],"negligible":[65],"coding":[66],"rate":[67],"increment":[68],"(up":[69],"3.4%":[71],"for":[72],"same":[74],"objective":[75],"quality).":[76],"result":[78],"compares":[79],"favourably":[80],"with":[81],"average":[83],"11.2%":[84],"bit-rate":[85],"penalty":[86],"introduced":[87],"where":[91],"step":[94],"is":[95],"reduced":[96],"contour-prone":[98],"areas.":[99]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-03-12T08:34:05.389933","created_date":"2025-10-10T00:00:00"}
