{"id":"https://openalex.org/W3153782301","doi":"https://doi.org/10.1109/access.2021.3071492","title":"Refined Locally Linear Transform-Based Spectral-Domain Gradient Sparsity and Its Applications in Spectral CT Reconstruction","display_name":"Refined Locally Linear Transform-Based Spectral-Domain Gradient Sparsity and Its Applications in Spectral CT Reconstruction","publication_year":2021,"publication_date":"2021-01-01","ids":{"openalex":"https://openalex.org/W3153782301","doi":"https://doi.org/10.1109/access.2021.3071492","mag":"3153782301","pmid":"https://pubmed.ncbi.nlm.nih.gov/33996345"},"language":"en","primary_location":{"id":"doi:10.1109/access.2021.3071492","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3071492","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/9312710/09398667.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://ieeexplore.ieee.org/ielx7/6287639/9312710/09398667.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100391017","display_name":"Qian Wang","orcid":"https://orcid.org/0000-0001-8988-126X"},"institutions":[{"id":"https://openalex.org/I133738476","display_name":"University of Massachusetts Lowell","ror":"https://ror.org/03hamhx47","country_code":"US","type":"education","lineage":["https://openalex.org/I133738476"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Qian Wang","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA"],"raw_orcid":"https://orcid.org/0000-0001-8988-126X","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","institution_ids":["https://openalex.org/I133738476"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA","institution_ids":["https://openalex.org/I133738476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033855170","display_name":"Morteza Salehjahromi","orcid":"https://orcid.org/0000-0002-7036-1683"},"institutions":[{"id":"https://openalex.org/I133738476","display_name":"University of Massachusetts Lowell","ror":"https://ror.org/03hamhx47","country_code":"US","type":"education","lineage":["https://openalex.org/I133738476"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Morteza Salehjahromi","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA"],"raw_orcid":"https://orcid.org/0000-0002-7036-1683","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","institution_ids":["https://openalex.org/I133738476"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA","institution_ids":["https://openalex.org/I133738476"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5052662150","display_name":"Hengyong Yu","orcid":"https://orcid.org/0000-0002-5852-0813"},"institutions":[{"id":"https://openalex.org/I133738476","display_name":"University of Massachusetts Lowell","ror":"https://ror.org/03hamhx47","country_code":"US","type":"education","lineage":["https://openalex.org/I133738476"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hengyong Yu","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA"],"raw_orcid":"https://orcid.org/0000-0002-5852-0813","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA 01854, USA","institution_ids":["https://openalex.org/I133738476"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Massachusetts at Lowell, Lowell, MA, USA","institution_ids":["https://openalex.org/I133738476"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.5095,"has_fulltext":true,"cited_by_count":7,"citation_normalized_percentile":{"value":0.59490242,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"9","issue":null,"first_page":"58537","last_page":"58548"},"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":1.0,"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":1.0,"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/T11778","display_name":"Electrical and Bioimpedance Tomography","score":0.9987000226974487,"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"}},{"id":"https://openalex.org/T12015","display_name":"Photoacoustic and Ultrasonic Imaging","score":0.9983000159263611,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5677615404129028},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.34249722957611084},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3217273950576782}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5677615404129028},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.34249722957611084},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3217273950576782}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1109/access.2021.3071492","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3071492","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/9312710/09398667.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmid:33996345","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/33996345","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE access : practical innovations, open solutions","raw_type":null},{"id":"pmh:oai:doaj.org/article:465639b405674df5ab7056b1dada37e6","is_oa":true,"landing_page_url":"https://doaj.org/article/465639b405674df5ab7056b1dada37e6","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":"IEEE Access, Vol 9, Pp 58537-58548 (2021)","raw_type":"article"},{"id":"pmh:oai:pubmedcentral.nih.gov:8118116","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/8118116","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"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":"IEEE Access","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.1109/access.2021.3071492","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2021.3071492","pdf_url":"https://ieeexplore.ieee.org/ielx7/6287639/9312710/09398667.pdf","source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.8899999856948853,"display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G295303772","display_name":null,"funder_award_id":"EB017140","funder_id":"https://openalex.org/F4320337363","funder_display_name":"National Institute of Biomedical Imaging and Bioengineering"}],"funders":[{"id":"https://openalex.org/F4320337363","display_name":"National Institute of Biomedical Imaging and Bioengineering","ror":"https://ror.org/00372qc85"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3153782301.pdf","grobid_xml":"https://content.openalex.org/works/W3153782301.grobid-xml"},"referenced_works_count":28,"referenced_works":["https://openalex.org/W1559124628","https://openalex.org/W1972037630","https://openalex.org/W2017441482","https://openalex.org/W2018125569","https://openalex.org/W2033511209","https://openalex.org/W2036321799","https://openalex.org/W2051635575","https://openalex.org/W2061052400","https://openalex.org/W2068780335","https://openalex.org/W2072647673","https://openalex.org/W2080799622","https://openalex.org/W2089626637","https://openalex.org/W2094366314","https://openalex.org/W2095447271","https://openalex.org/W2125188192","https://openalex.org/W2214358229","https://openalex.org/W2512266304","https://openalex.org/W2539643339","https://openalex.org/W2556227111","https://openalex.org/W2883633804","https://openalex.org/W2883722717","https://openalex.org/W2884211269","https://openalex.org/W2902901498","https://openalex.org/W2906002859","https://openalex.org/W2996868574","https://openalex.org/W3046850395","https://openalex.org/W3105660070","https://openalex.org/W4255944248"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2376932109"],"abstract_inverted_index":{"Spectral":[0],"computed":[1],"tomography":[2],"(CT)":[3],"is":[4,58,125],"extension":[5],"of":[6],"the":[7,14,27,37,55,76,96,112,116,149,154,159],"conventional":[8],"single":[9],"spectral":[10,34,102],"CT":[11,103],"(SSCT)":[12],"along":[13],"energy":[15,20,53],"dimension,":[16],"which":[17],"achieves":[18],"superior":[19],"resolution":[21],"and":[22,65,80,140,157,161],"material":[23,72],"distinguishability.":[24],"However,":[25],"for":[26,45],"state-of-the-art":[28],"photon":[29],"counting":[30],"detector":[31],"(PCD)":[32],"based":[33],"CT,":[35],"because":[36],"emitted":[38],"photons":[39],"with":[40,129,163],"a":[41,89,106,119],"fixed":[42],"total":[43],"number":[44],"each":[46,61,144],"X-ray":[47],"beam":[48],"are":[49],"divided":[50],"into":[51],"several":[52],"bins,":[54],"noise":[56],"level":[57],"increased":[59],"in":[60,83,115],"reconstructed":[62,77],"channel":[63],"image,":[64],"it":[66],"further":[67],"leads":[68],"to":[69,94,105],"an":[70],"inaccurate":[71],"decomposition.":[73],"To":[74],"improve":[75],"image":[78],"quality":[79],"decomposition":[81],"accuracy,":[82],"this":[84],"work,":[85],"we":[86,147],"first":[87],"employ":[88],"refined":[90],"locally":[91],"linear":[92],"transform":[93],"convert":[95],"structural":[97],"similarity":[98],"among":[99],"two-dimensional":[100],"(2D)":[101],"images":[104],"spectral-dimension":[107],"gradient":[108,113,123],"sparsity.":[109],"By":[110],"combining":[111],"sparsity":[114,124,145],"spatial":[117],"domain,":[118],"global":[120],"three-dimensional":[121],"(3D)":[122],"constructed,":[126],"then":[127],"measured":[128],"L":[130,135],"<sub":[131,136],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[132,137],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">1</sub>":[133],"-,":[134],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">0</sub>":[138],"-":[139],"trace-norm,":[141],"respectively.":[142],"For":[143],"measurement,":[146],"propose":[148],"corresponding":[150],"optimization":[151],"model,":[152],"develop":[153],"iterative":[155],"algorithm,":[156],"verify":[158],"effectiveness":[160],"superiority":[162],"real":[164],"datasets.":[165]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
