{"id":"https://openalex.org/W2145385304","doi":"https://doi.org/10.1142/s0219691308002665","title":"SUBBAND VARIANCE COMPUTATION OF HOMOSCEDASTIC ADDITIVE NOISE IN DISCRETE DYADIC WAVELET TRANSFORM","display_name":"SUBBAND VARIANCE COMPUTATION OF HOMOSCEDASTIC ADDITIVE NOISE IN DISCRETE DYADIC WAVELET TRANSFORM","publication_year":2008,"publication_date":"2008-11-01","ids":{"openalex":"https://openalex.org/W2145385304","doi":"https://doi.org/10.1142/s0219691308002665","mag":"2145385304"},"language":"en","primary_location":{"id":"doi:10.1142/s0219691308002665","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0219691308002665","pdf_url":null,"source":{"id":"https://openalex.org/S56986848","display_name":"International Journal of Wavelets Multiresolution and Information Processing","issn_l":"0219-6913","issn":["0219-6913","1793-690X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Wavelets, Multiresolution and Information Processing","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/A5014451390","display_name":"Arianna Mencattini","orcid":"https://orcid.org/0000-0002-3753-0457"},"institutions":[{"id":"https://openalex.org/I116067653","display_name":"University of Rome Tor Vergata","ror":"https://ror.org/02p77k626","country_code":"IT","type":"education","lineage":["https://openalex.org/I116067653"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"ARIANNA MENCATTINI","raw_affiliation_strings":["Department of Electronic Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy"],"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy","institution_ids":["https://openalex.org/I116067653"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039654589","display_name":"Marcello Salmeri","orcid":"https://orcid.org/0000-0002-4606-8081"},"institutions":[{"id":"https://openalex.org/I116067653","display_name":"University of Rome Tor Vergata","ror":"https://ror.org/02p77k626","country_code":"IT","type":"education","lineage":["https://openalex.org/I116067653"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"MARCELLO SALMERI","raw_affiliation_strings":["Department of Electronic Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy"],"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy","institution_ids":["https://openalex.org/I116067653"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061339214","display_name":"Federica Caselli","orcid":"https://orcid.org/0000-0001-6663-8603"},"institutions":[{"id":"https://openalex.org/I116067653","display_name":"University of Rome Tor Vergata","ror":"https://ror.org/02p77k626","country_code":"IT","type":"education","lineage":["https://openalex.org/I116067653"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"FEDERICA CASELLI","raw_affiliation_strings":["Department of Civil Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy"],"affiliations":[{"raw_affiliation_string":"Department of Civil Engineering, University of Rome \"Tor Vergata\", Via del Politecnico 1, 00133 Rome, Italy","institution_ids":["https://openalex.org/I116067653"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027038427","display_name":"Berardino Sciunzi","orcid":"https://orcid.org/0000-0002-7147-2035"},"institutions":[{"id":"https://openalex.org/I45204951","display_name":"University of Calabria","ror":"https://ror.org/02rc97e94","country_code":"IT","type":"education","lineage":["https://openalex.org/I45204951"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"BERARDINO SCIUNZI","raw_affiliation_strings":["Department of Mathematics, University of Calabria, Via Pietro Bucci, 87036 Arcavacata di Rende (CS), Italy"],"affiliations":[{"raw_affiliation_string":"Department of Mathematics, University of Calabria, Via Pietro Bucci, 87036 Arcavacata di Rende (CS), Italy","institution_ids":["https://openalex.org/I45204951"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5051950820","display_name":"R. Lojacono","orcid":null},"institutions":[{"id":"https://openalex.org/I116067653","display_name":"University of Rome Tor Vergata","ror":"https://ror.org/02p77k626","country_code":"IT","type":"education","lineage":["https://openalex.org/I116067653"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"ROBERTO LOJACONO","raw_affiliation_strings":["Department of Electronic Engineering University of Rome \"Tor Vergata\" Via del Politecnico 1, 00133 Rome, Italy"],"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering University of Rome \"Tor Vergata\" Via del Politecnico 1, 00133 Rome, Italy","institution_ids":["https://openalex.org/I116067653"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5014451390"],"corresponding_institution_ids":["https://openalex.org/I116067653"],"apc_list":null,"apc_paid":null,"fwci":3.5523,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.93483828,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"06","issue":"06","first_page":"895","last_page":"906"},"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/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.9904999732971191,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"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/T12300","display_name":"Advanced Electrical Measurement Techniques","score":0.9886999726295471,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/discrete-wavelet-transform","display_name":"Discrete wavelet transform","score":0.6315889358520508},{"id":"https://openalex.org/keywords/wavelet","display_name":"Wavelet","score":0.6133561730384827},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6002565622329712},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.5322337746620178},{"id":"https://openalex.org/keywords/homoscedasticity","display_name":"Homoscedasticity","score":0.49747446179389954},{"id":"https://openalex.org/keywords/wavelet-transform","display_name":"Wavelet transform","score":0.4952675402164459},{"id":"https://openalex.org/keywords/white-noise","display_name":"White noise","score":0.4672996997833252},{"id":"https://openalex.org/keywords/stationary-wavelet-transform","display_name":"Stationary wavelet transform","score":0.4657873213291168},{"id":"https://openalex.org/keywords/orthonormal-basis","display_name":"Orthonormal basis","score":0.4370490312576294},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.36806315183639526},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.3668460249900818},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.3458520770072937},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.34552913904190063},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3402404487133026},{"id":"https://openalex.org/keywords/heteroscedasticity","display_name":"Heteroscedasticity","score":0.2704717516899109},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2495327889919281},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06110566854476929}],"concepts":[{"id":"https://openalex.org/C46286280","wikidata":"https://www.wikidata.org/wiki/Q2414958","display_name":"Discrete wavelet transform","level":4,"score":0.6315889358520508},{"id":"https://openalex.org/C47432892","wikidata":"https://www.wikidata.org/wiki/Q831390","display_name":"Wavelet","level":2,"score":0.6133561730384827},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6002565622329712},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.5322337746620178},{"id":"https://openalex.org/C104409967","wikidata":"https://www.wikidata.org/wiki/Q1054836","display_name":"Homoscedasticity","level":3,"score":0.49747446179389954},{"id":"https://openalex.org/C196216189","wikidata":"https://www.wikidata.org/wiki/Q2867","display_name":"Wavelet transform","level":3,"score":0.4952675402164459},{"id":"https://openalex.org/C112633086","wikidata":"https://www.wikidata.org/wiki/Q381287","display_name":"White noise","level":2,"score":0.4672996997833252},{"id":"https://openalex.org/C73339587","wikidata":"https://www.wikidata.org/wiki/Q1375942","display_name":"Stationary wavelet transform","level":5,"score":0.4657873213291168},{"id":"https://openalex.org/C5806529","wikidata":"https://www.wikidata.org/wiki/Q2365325","display_name":"Orthonormal basis","level":2,"score":0.4370490312576294},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.36806315183639526},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.3668460249900818},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.3458520770072937},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.34552913904190063},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3402404487133026},{"id":"https://openalex.org/C101104100","wikidata":"https://www.wikidata.org/wiki/Q1063540","display_name":"Heteroscedasticity","level":2,"score":0.2704717516899109},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2495327889919281},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06110566854476929},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1142/s0219691308002665","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0219691308002665","pdf_url":null,"source":{"id":"https://openalex.org/S56986848","display_name":"International Journal of Wavelets Multiresolution and Information Processing","issn_l":"0219-6913","issn":["0219-6913","1793-690X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Wavelets, Multiresolution and Information Processing","raw_type":"journal-article"},{"id":"pmh:oai:art.torvergata.it:2108/13298","is_oa":false,"landing_page_url":"https://hdl.handle.net/2108/13298","pdf_url":null,"source":{"id":"https://openalex.org/S4306400993","display_name":"Cineca Institutional Research Information System (Tor Vergata University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I116067653","host_organization_name":"University of Rome Tor Vergata","host_organization_lineage":["https://openalex.org/I116067653"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W78120443","https://openalex.org/W384409351","https://openalex.org/W1495224414","https://openalex.org/W1973758555","https://openalex.org/W2004217976","https://openalex.org/W2040835538","https://openalex.org/W2040845349","https://openalex.org/W2070310908","https://openalex.org/W2095329897","https://openalex.org/W2115755118","https://openalex.org/W2125527601","https://openalex.org/W2129042155","https://openalex.org/W2137304315","https://openalex.org/W2137969878","https://openalex.org/W2146842127","https://openalex.org/W2153820018","https://openalex.org/W2158940042","https://openalex.org/W2209466065","https://openalex.org/W2280892290","https://openalex.org/W4214540058"],"related_works":["https://openalex.org/W1889651196","https://openalex.org/W2085792030","https://openalex.org/W4310584255","https://openalex.org/W4233635293","https://openalex.org/W4249722514","https://openalex.org/W2181522976","https://openalex.org/W2101997086","https://openalex.org/W1559442991","https://openalex.org/W2355617657","https://openalex.org/W2164576153"],"abstract_inverted_index":{"The":[0],"paper":[1],"deals":[2],"with":[3],"noise":[4,27,42,50],"power":[5],"variation":[6],"that":[7],"occurs":[8],"when":[9],"Discrete":[10],"Dyadic":[11],"Wavelet":[12],"Transform":[13],"(DDWT)":[14],"is":[15,60,64],"applied":[16],"to":[17,29,75],"signals":[18],"affected":[19],"by":[20],"Wide":[21],"Sense":[22],"Stationary":[23],"(WSS)":[24],"additive":[25],"white":[26],"owing":[28],"the":[30,41,45,49,53,67,78],"use":[31],"of":[32,69],"a":[33,57],"non":[34],"orthonormal":[35],"expansion.":[36],"An":[37],"exact":[38],"relationship":[39,63],"between":[40],"variance":[43,51],"in":[44,52,66,80],"original":[46],"signal":[47,73],"and":[48],"wavelet":[54,70],"coefficients":[55],"at":[56],"generic":[58],"level":[59],"derived.":[61],"This":[62],"crucial":[65],"application":[68],"thresholding":[71],"for":[72],"denoising":[74],"properly":[76],"select":[77],"threshold":[79],"each":[81],"subband.":[82]},"counts_by_year":[{"year":2017,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":4}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}