{"id":"https://openalex.org/W1980694188","doi":"https://doi.org/10.1002/ima.1850040204","title":"An imaging device that uses the wavelet transformation as the image reconstruction algorithm","display_name":"An imaging device that uses the wavelet transformation as the image reconstruction algorithm","publication_year":1992,"publication_date":"1992-06-01","ids":{"openalex":"https://openalex.org/W1980694188","doi":"https://doi.org/10.1002/ima.1850040204","mag":"1980694188"},"language":"en","primary_location":{"id":"doi:10.1002/ima.1850040204","is_oa":false,"landing_page_url":"https://doi.org/10.1002/ima.1850040204","pdf_url":null,"source":{"id":"https://openalex.org/S15952048","display_name":"International Journal of Imaging Systems and Technology","issn_l":"0899-9457","issn":["0899-9457","1098-1098"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Imaging Systems and Technology","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/A5077300633","display_name":"John H. Letcher","orcid":null},"institutions":[{"id":"https://openalex.org/I87208437","display_name":"University of Tulsa","ror":"https://ror.org/04wn28048","country_code":"US","type":"education","lineage":["https://openalex.org/I87208437"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"John H. Letcher","raw_affiliation_strings":["Department of Mathematical and Computer Sciences, University of Tulsa, Tulsa, Oklahoma 74104 and Cyrix Corporation, Richardson, Texas 75081"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical and Computer Sciences, University of Tulsa, Tulsa, Oklahoma 74104 and Cyrix Corporation, Richardson, Texas 75081","institution_ids":["https://openalex.org/I87208437"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5077300633"],"corresponding_institution_ids":["https://openalex.org/I87208437"],"apc_list":{"value":3450,"currency":"USD","value_usd":3450},"apc_paid":null,"fwci":0.5743,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.6516417,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"4","issue":"2","first_page":"98","last_page":"108"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10727","display_name":"Ultrasound Imaging and Elastography","score":0.9994000196456909,"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"}},"topics":[{"id":"https://openalex.org/T10727","display_name":"Ultrasound Imaging and Elastography","score":0.9994000196456909,"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/T12015","display_name":"Photoacoustic and Ultrasonic Imaging","score":0.9993000030517578,"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/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.9986000061035156,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/wavelet","display_name":"Wavelet","score":0.771028995513916},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6067135334014893},{"id":"https://openalex.org/keywords/orthonormal-basis","display_name":"Orthonormal basis","score":0.5834808349609375},{"id":"https://openalex.org/keywords/fourier-transform","display_name":"Fourier transform","score":0.5385151505470276},{"id":"https://openalex.org/keywords/wavelet-transform","display_name":"Wavelet transform","score":0.5228774547576904},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.49375805258750916},{"id":"https://openalex.org/keywords/harmonic-wavelet-transform","display_name":"Harmonic wavelet transform","score":0.4557364583015442},{"id":"https://openalex.org/keywords/basis-function","display_name":"Basis function","score":0.4525850713253021},{"id":"https://openalex.org/keywords/transformation","display_name":"Transformation (genetics)","score":0.42960605025291443},{"id":"https://openalex.org/keywords/impulse-response","display_name":"Impulse response","score":0.4224199652671814},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.41439956426620483},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.4119792580604553},{"id":"https://openalex.org/keywords/discrete-wavelet-transform","display_name":"Discrete wavelet transform","score":0.3586539626121521},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3115772008895874},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1734907627105713},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.1618390679359436}],"concepts":[{"id":"https://openalex.org/C47432892","wikidata":"https://www.wikidata.org/wiki/Q831390","display_name":"Wavelet","level":2,"score":0.771028995513916},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6067135334014893},{"id":"https://openalex.org/C5806529","wikidata":"https://www.wikidata.org/wiki/Q2365325","display_name":"Orthonormal basis","level":2,"score":0.5834808349609375},{"id":"https://openalex.org/C102519508","wikidata":"https://www.wikidata.org/wiki/Q6520159","display_name":"Fourier transform","level":2,"score":0.5385151505470276},{"id":"https://openalex.org/C196216189","wikidata":"https://www.wikidata.org/wiki/Q2867","display_name":"Wavelet transform","level":3,"score":0.5228774547576904},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49375805258750916},{"id":"https://openalex.org/C1109138","wikidata":"https://www.wikidata.org/wiki/Q3280930","display_name":"Harmonic wavelet transform","level":5,"score":0.4557364583015442},{"id":"https://openalex.org/C5917680","wikidata":"https://www.wikidata.org/wiki/Q2621825","display_name":"Basis function","level":2,"score":0.4525850713253021},{"id":"https://openalex.org/C204241405","wikidata":"https://www.wikidata.org/wiki/Q461499","display_name":"Transformation (genetics)","level":3,"score":0.42960605025291443},{"id":"https://openalex.org/C72279823","wikidata":"https://www.wikidata.org/wiki/Q1139726","display_name":"Impulse response","level":2,"score":0.4224199652671814},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.41439956426620483},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4119792580604553},{"id":"https://openalex.org/C46286280","wikidata":"https://www.wikidata.org/wiki/Q2414958","display_name":"Discrete wavelet transform","level":4,"score":0.3586539626121521},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3115772008895874},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1734907627105713},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.1618390679359436},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/ima.1850040204","is_oa":false,"landing_page_url":"https://doi.org/10.1002/ima.1850040204","pdf_url":null,"source":{"id":"https://openalex.org/S15952048","display_name":"International Journal of Imaging Systems and Technology","issn_l":"0899-9457","issn":["0899-9457","1098-1098"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Imaging Systems and Technology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","score":0.6100000143051147,"display_name":"Reduced inequalities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":3,"referenced_works":["https://openalex.org/W2041752335","https://openalex.org/W2063296501","https://openalex.org/W4300752724"],"related_works":["https://openalex.org/W2096954214","https://openalex.org/W2105364485","https://openalex.org/W2088723847","https://openalex.org/W2101997086","https://openalex.org/W2382490471","https://openalex.org/W2085792030","https://openalex.org/W2619281917","https://openalex.org/W1889651196","https://openalex.org/W1547339931","https://openalex.org/W2120966954"],"abstract_inverted_index":{"Abstract":[0],"Many":[1],"imaging":[2,370],"devices":[3],"have":[4,264],"been":[5],"constructed":[6],"that":[7,41,336],"use":[8],"fourier":[9,26,76],"transform":[10,27],"techniques":[11],"for":[12,18],"image":[13,19],"reconstruction":[14],"as":[15,17],"well":[16,50,74],"analysis.":[20],"The":[21,100,133,154,193,209,221,241,341],"basis":[22,83,190],"functions":[23,52,84],"in":[24,129,168,404],"the":[25,56,59,63,79,82,86,105,112,116,130,139,158,163,186,202,214,219,228,238,289,294,297,304,307,313,317,323,332,356,364],"space":[28],"are":[29,32,71,89,98,211,338,371],"sinusoids.":[30],"These":[31],"not":[33,38,72,161,257],"localized.":[34],"Therefore":[35],"it":[36,172,268],"should":[37,160,173],"be":[39,48,162,174,320],"expected":[40],"highly":[42,90,188],"localized":[43,189],"behavior":[44],"of":[45,58,66,85,104,118,135,143,178,185,199,201,216,218,230,232,254,293,306,312,359,377],"a":[46,67,119,124,175,179,182,197,246,251,375,397],"signal":[47,70,113,155,166,195,318,343],"characterized":[49],"using":[51,374],"distributed":[53],"evenly":[54],"throughout":[55],"interval":[57],"integral":[60],"transform.":[61],"Also,":[62],"phase":[64],"cancellations":[65],"conventional":[68,169,382],"impulse":[69,164,290,309,333],"handled":[73],"by":[75,287,381],"techniques.":[77,383],"On":[78],"other":[80],"hand,":[81],"wavelet":[87,106,222,249,361],"transformation":[88,107,223],"localized,":[91],"i.e.,":[92],"these":[93,233],"exhibit":[94],"compact":[95],"support,":[96],"yet":[97],"orthonormal.":[99],"multispectral":[101],"decomposition":[102],"algorithm":[103],"is":[108,196,224,236,245,256,278,285,301,328,344,351,410],"used":[109,167],"to":[110,213,259,270,319,322,330,354,363,392],"analyze":[111],"returning":[114,194],"from":[115,280],"reflections":[117],"single":[120,180,248,385],"ultrasonic":[121],"transducer":[122],"with":[123,303,396,406],"focused":[125],"beam":[126],"and":[127,149,368,394,409],"operated":[128],"focal":[131],"zone.":[132],"choice":[134],"frequency":[136],"depends":[137],"upon":[138],"mutually":[140],"antagonistic":[141],"factors":[142],"penetration":[144],"(\u03b1":[145,151],"f":[146,152],"\u20132":[147],")":[148],"resolution":[150],").":[153],"sent":[156],"into":[157],"sample":[159],"response":[165,291,310,334],"devices;":[170],"rather,":[171],"time\u2010reversed":[176,247],"replica":[177],"or":[181,250],"linear":[183,252],"combination":[184,253],"most":[187],"function":[191,292,311],"wavelets.":[192,208],"sequence":[198,376],"translates":[200,234],"wavelets":[203],"plus":[204],"perhaps":[205],"some":[206],"lower\u2010resolution":[207],"translations":[210],"proportational":[212],"time":[215,357],"flight":[217],"signal.":[220,240],"superb":[225],"at":[226,346],"discriminating":[227],"population":[229],"each":[231],"which":[235,244,266,350,401],"identically":[237],"A\u2010scan":[239,378,386],"transmitted":[242],"signal,":[243],"wavelets,":[255],"easy":[258],"produce.":[260],"Inexpensive":[261],"ultrasound":[262],"transducers":[263],"resonances":[265],"make":[267],"difficult":[269],"produce":[271],"any":[272],"desired":[273,298],"wave":[274,283,299],"form.":[275],"Wavelet":[276],"shape":[277,300],"far":[279],"arbitrary.":[281],"Precise":[282],"shaping":[284],"performed":[286],"measuring":[288],"transducer;":[295],"then,":[296],"convolved":[302],"inverse":[305],"measured":[308],"transducer.":[314],"This":[315],"produces":[316],"presented":[321],"pulse":[324],"generation":[325],"circuit.":[326],"Care":[327],"taken":[329],"damp":[331],"so":[335],"there":[337],"no":[339],"zeros.":[340],"received":[342],"sampled":[345],"an":[347],"even":[348],"rate":[349],"carefully":[352],"chosen":[353],"match":[355],"delay":[358],"one":[360],"translate":[362],"next.":[365],"B\u2010scan,":[366],"C\u2010scan,":[367],"volume":[369],"easily":[372],"accomplished":[373],"data,":[379],"all":[380],"A":[384],"requires":[387],"less":[388],"than":[389],"2":[390],"ms":[391],"perform":[393],"reconstruct":[395],"high\u2010speed":[398],"arithmetic":[399],"unit":[400],"was":[402],"designed":[403],"conjunction":[405],"this":[407],"work":[408],"now":[411],"commercially":[412],"available.":[413]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
