{"id":"https://openalex.org/W2118556171","doi":"https://doi.org/10.1109/camsap.2013.6714053","title":"Sparse X-ray CT image reconstruction and blind beam hardening correction via mass attenuation discretization","display_name":"Sparse X-ray CT image reconstruction and blind beam hardening correction via mass attenuation discretization","publication_year":2013,"publication_date":"2013-12-01","ids":{"openalex":"https://openalex.org/W2118556171","doi":"https://doi.org/10.1109/camsap.2013.6714053","mag":"2118556171"},"language":"en","primary_location":{"id":"doi:10.1109/camsap.2013.6714053","is_oa":false,"landing_page_url":"https://doi.org/10.1109/camsap.2013.6714053","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2013 5th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)","raw_type":"proceedings-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/A5106183477","display_name":"Renliang Gu","orcid":null},"institutions":[{"id":"https://openalex.org/I173911158","display_name":"Iowa State University","ror":"https://ror.org/04rswrd78","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Renliang Gu","raw_affiliation_strings":["ECpE Department, Iowa State University, Ames, IA","[ECpE Dept., Iowa State University, Ames, IA, USA]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"ECpE Department, Iowa State University, Ames, IA","institution_ids":["https://openalex.org/I173911158"]},{"raw_affiliation_string":"[ECpE Dept., Iowa State University, Ames, IA, USA]","institution_ids":["https://openalex.org/I173911158"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5020320518","display_name":"A. Dogandzic","orcid":"https://orcid.org/0000-0002-3005-3686"},"institutions":[{"id":"https://openalex.org/I173911158","display_name":"Iowa State University","ror":"https://ror.org/04rswrd78","country_code":"US","type":"education","lineage":["https://openalex.org/I173911158"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Aleksandar Dogandzic","raw_affiliation_strings":["Iowa State University, Ames, IA, US","[ECpE Dept., Iowa State University, Ames, IA, USA]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Iowa State University, Ames, IA, US","institution_ids":["https://openalex.org/I173911158"]},{"raw_affiliation_string":"[ECpE Dept., Iowa State University, Ames, IA, USA]","institution_ids":["https://openalex.org/I173911158"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I173911158"],"apc_list":null,"apc_paid":null,"fwci":0.6156,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.71270006,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"244","last_page":"247"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12386","display_name":"Advanced X-ray and CT Imaging","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12386","display_name":"Advanced X-ray and CT Imaging","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"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/T10522","display_name":"Medical Imaging Techniques and Applications","score":0.9998000264167786,"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/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9986000061035156,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/discretization","display_name":"Discretization","score":0.6351916790008545},{"id":"https://openalex.org/keywords/iterative-reconstruction","display_name":"Iterative reconstruction","score":0.6077090501785278},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5990350842475891},{"id":"https://openalex.org/keywords/conjugate-gradient-method","display_name":"Conjugate gradient method","score":0.5569682121276855},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.49893903732299805},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.4750521183013916},{"id":"https://openalex.org/keywords/attenuation","display_name":"Attenuation","score":0.4707986116409302},{"id":"https://openalex.org/keywords/minification","display_name":"Minification","score":0.43087825179100037},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4253261983394623},{"id":"https://openalex.org/keywords/energy","display_name":"Energy (signal processing)","score":0.4197852313518524},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3567676544189453},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3152604401111603},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.2690282464027405},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.2591877579689026},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.22120872139930725}],"concepts":[{"id":"https://openalex.org/C73000952","wikidata":"https://www.wikidata.org/wiki/Q17007827","display_name":"Discretization","level":2,"score":0.6351916790008545},{"id":"https://openalex.org/C141379421","wikidata":"https://www.wikidata.org/wiki/Q6094427","display_name":"Iterative reconstruction","level":2,"score":0.6077090501785278},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5990350842475891},{"id":"https://openalex.org/C81184566","wikidata":"https://www.wikidata.org/wiki/Q1191895","display_name":"Conjugate gradient method","level":2,"score":0.5569682121276855},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.49893903732299805},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.4750521183013916},{"id":"https://openalex.org/C184652730","wikidata":"https://www.wikidata.org/wiki/Q2357982","display_name":"Attenuation","level":2,"score":0.4707986116409302},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.43087825179100037},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4253261983394623},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.4197852313518524},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3567676544189453},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3152604401111603},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.2690282464027405},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.2591877579689026},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.22120872139930725},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"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":3,"locations":[{"id":"doi:10.1109/camsap.2013.6714053","is_oa":false,"landing_page_url":"https://doi.org/10.1109/camsap.2013.6714053","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2013 5th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)","raw_type":"proceedings-article"},{"id":"pmh:oai:lib.dr.iastate.edu:ece_conf-1001","is_oa":false,"landing_page_url":"https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1001&amp;amp;context=ece_conf","pdf_url":null,"source":{"id":"https://openalex.org/S4377196104","display_name":"Iowa State University Digital Repository (Iowa State University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I173911158","host_organization_name":"Iowa State University","host_organization_lineage":["https://openalex.org/I173911158"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Electrical and Computer Engineering Conference Papers, Posters and Presentations","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.1024.3871","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1024.3871","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article%3D1001%26context%3Dece_conf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.47999998927116394,"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":25,"referenced_works":["https://openalex.org/W291003596","https://openalex.org/W1556473642","https://openalex.org/W1964590153","https://openalex.org/W1973551921","https://openalex.org/W1975563492","https://openalex.org/W1985245560","https://openalex.org/W1998007267","https://openalex.org/W2002660707","https://openalex.org/W2037521346","https://openalex.org/W2049760669","https://openalex.org/W2096142642","https://openalex.org/W2098092211","https://openalex.org/W2098841537","https://openalex.org/W2099944953","https://openalex.org/W2101675075","https://openalex.org/W2108560279","https://openalex.org/W2118916039","https://openalex.org/W2167036988","https://openalex.org/W2296319761","https://openalex.org/W2325850497","https://openalex.org/W2962867031","https://openalex.org/W3004157836","https://openalex.org/W3173138228","https://openalex.org/W4250589301","https://openalex.org/W6651313702"],"related_works":["https://openalex.org/W2006251942","https://openalex.org/W2364741597","https://openalex.org/W1492103595","https://openalex.org/W2062605435","https://openalex.org/W1864774435","https://openalex.org/W946352265","https://openalex.org/W3020787026","https://openalex.org/W2334479858","https://openalex.org/W2826570026","https://openalex.org/W2138031928"],"abstract_inverted_index":{"We":[0,23,126],"develop":[1],"a":[2,65,106],"nonlinear":[3,107],"sparse":[4],"X-ray":[5,21],"computed":[6],"tomography":[7],"(CT)":[8],"image":[9,115],"reconstruction":[10,59],"method":[11,130],"that":[12,53],"accounts":[13],"for":[14,110,121],"beam":[15],"hardening":[16],"effects":[17],"due":[18],"to":[19,90],"polychromatic":[20,38,138],"sources.":[22],"adopt":[24],"the":[25,29,32,36,49,55,92,97,112,128,132,137,141,146],"blind":[26],"scenario":[27],"where":[28,70],"material":[30],"of":[31,48,64,96,140,145],"inspected":[33],"object":[34],"and":[35,43,72,81,83,94,116],"incident":[37,78,123],"source":[39],"spectrum":[40,79,124],"are":[41,75,88],"unknown":[42],"apply":[44],"mass":[45],"attenuation":[46],"discretization":[47],"underlying":[50],"integral":[51],"expressions":[52],"model":[54],"noiseless":[56],"measurements.":[57],"Our":[58],"algorithm":[60],"employs":[61],"constrained":[62],"minimization":[63,102],"penalized":[66],"least-squares":[67],"cost":[68],"function,":[69],"nonnegativity":[71,93],"maximum-energy":[73],"constraints":[74],"imposed":[76],"on":[77],"parameters":[80],"negative-energy":[82],"smooth":[84],"l1-norm":[85],"penalty":[86],"terms":[87],"introduced":[89],"ensure":[91],"sparsity":[95,144],"density":[98,113,147],"map":[99,114,148],"image.":[100,149],"This":[101],"scheme":[103],"alternates":[104],"between":[105],"conjugate-gradient":[108],"step":[109,120],"estimating":[111,122],"an":[117],"active":[118],"set":[119],"parameters.":[125],"compare":[127],"proposed":[129],"with":[131],"existing":[133],"approaches,":[134],"which":[135],"ignore":[136],"nature":[139],"measurements":[142],"or":[143]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":1}],"updated_date":"2026-06-26T08:34:08.712188","created_date":"2025-10-10T00:00:00"}
