{"id":"https://openalex.org/W4413677610","doi":"https://doi.org/10.1109/tvlsi.2025.3600953","title":"ASNA-Flow: An Efficient Asynchronous Neuromorphic Accelerator for Real-Time Event-Based Optical Flow","display_name":"ASNA-Flow: An Efficient Asynchronous Neuromorphic Accelerator for Real-Time Event-Based Optical Flow","publication_year":2025,"publication_date":"2025-08-26","ids":{"openalex":"https://openalex.org/W4413677610","doi":"https://doi.org/10.1109/tvlsi.2025.3600953"},"language":"en","primary_location":{"id":"doi:10.1109/tvlsi.2025.3600953","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvlsi.2025.3600953","pdf_url":null,"source":{"id":"https://openalex.org/S37538908","display_name":"IEEE Transactions on Very Large Scale Integration (VLSI) Systems","issn_l":"1063-8210","issn":["1063-8210","1557-9999"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Very Large Scale Integration (VLSI) Systems","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/A5032144027","display_name":"Jinghai Wang","orcid":"https://orcid.org/0009-0006-5263-8120"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jinghai Wang","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010373261","display_name":"Jilong Luo","orcid":null},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jilong Luo","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101668875","display_name":"Bo Li","orcid":"https://orcid.org/0009-0002-4544-9648"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bo Li","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010781243","display_name":"Lingfeng Zhou","orcid":"https://orcid.org/0009-0006-0301-0855"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lingfeng Zhou","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017560036","display_name":"Zhiyi Yu","orcid":"https://orcid.org/0000-0002-8802-0457"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiyi Yu","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079537451","display_name":"Shanlin Xiao","orcid":"https://orcid.org/0000-0002-1250-8704"},"institutions":[{"id":"https://openalex.org/I157773358","display_name":"Sun Yat-sen University","ror":"https://ror.org/0064kty71","country_code":"CN","type":"education","lineage":["https://openalex.org/I157773358"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shanlin Xiao","raw_affiliation_strings":["School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China"],"affiliations":[{"raw_affiliation_string":"School of Microelectronics Science and Technology, Sun Yat-sen University, Zhuhai, China","institution_ids":["https://openalex.org/I157773358"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5032144027"],"corresponding_institution_ids":["https://openalex.org/I157773358"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.26936186,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"33","issue":"12","first_page":"3409","last_page":"3422"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10502","display_name":"Advanced Memory and Neural Computing","score":0.9987999796867371,"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"}},"topics":[{"id":"https://openalex.org/T10502","display_name":"Advanced Memory and Neural Computing","score":0.9987999796867371,"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/T12611","display_name":"Neural Networks and Reservoir Computing","score":0.9972000122070312,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T11992","display_name":"CCD and CMOS Imaging Sensors","score":0.9923999905586243,"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/asynchronous-communication","display_name":"Asynchronous communication","score":0.90367192029953},{"id":"https://openalex.org/keywords/neuromorphic-engineering","display_name":"Neuromorphic engineering","score":0.8402086496353149},{"id":"https://openalex.org/keywords/event","display_name":"Event (particle physics)","score":0.5970823764801025},{"id":"https://openalex.org/keywords/flow","display_name":"Flow (mathematics)","score":0.5824409127235413},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5821583867073059},{"id":"https://openalex.org/keywords/optical-flow","display_name":"Optical flow","score":0.5393012166023254},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.20988339185714722},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.14792203903198242},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10261577367782593},{"id":"https://openalex.org/keywords/mechanics","display_name":"Mechanics","score":0.08468237519264221},{"id":"https://openalex.org/keywords/artificial-neural-network","display_name":"Artificial neural network","score":0.07266774773597717}],"concepts":[{"id":"https://openalex.org/C151319957","wikidata":"https://www.wikidata.org/wiki/Q752739","display_name":"Asynchronous communication","level":2,"score":0.90367192029953},{"id":"https://openalex.org/C151927369","wikidata":"https://www.wikidata.org/wiki/Q1981312","display_name":"Neuromorphic engineering","level":3,"score":0.8402086496353149},{"id":"https://openalex.org/C2779662365","wikidata":"https://www.wikidata.org/wiki/Q5416694","display_name":"Event (particle physics)","level":2,"score":0.5970823764801025},{"id":"https://openalex.org/C38349280","wikidata":"https://www.wikidata.org/wiki/Q1434290","display_name":"Flow (mathematics)","level":2,"score":0.5824409127235413},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5821583867073059},{"id":"https://openalex.org/C155542232","wikidata":"https://www.wikidata.org/wiki/Q736111","display_name":"Optical flow","level":3,"score":0.5393012166023254},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.20988339185714722},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.14792203903198242},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10261577367782593},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.08468237519264221},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.07266774773597717},{"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/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tvlsi.2025.3600953","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvlsi.2025.3600953","pdf_url":null,"source":{"id":"https://openalex.org/S37538908","display_name":"IEEE Transactions on Very Large Scale Integration (VLSI) Systems","issn_l":"1063-8210","issn":["1063-8210","1557-9999"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Very Large Scale Integration (VLSI) Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.6600000262260437}],"awards":[{"id":"https://openalex.org/G691677441","display_name":null,"funder_award_id":"62334014","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7420601228","display_name":null,"funder_award_id":"2023B0303030004","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":40,"referenced_works":["https://openalex.org/W1604973310","https://openalex.org/W2085949935","https://openalex.org/W2157239334","https://openalex.org/W2567239141","https://openalex.org/W2783525259","https://openalex.org/W2785582094","https://openalex.org/W2788172931","https://openalex.org/W2798690537","https://openalex.org/W2906043559","https://openalex.org/W2921967969","https://openalex.org/W2968243907","https://openalex.org/W2977854614","https://openalex.org/W2978614371","https://openalex.org/W2979439447","https://openalex.org/W3010556452","https://openalex.org/W3040838455","https://openalex.org/W3042725081","https://openalex.org/W3088147633","https://openalex.org/W3109192943","https://openalex.org/W3129684859","https://openalex.org/W3133785897","https://openalex.org/W3164543136","https://openalex.org/W3177222833","https://openalex.org/W3183450825","https://openalex.org/W3185068381","https://openalex.org/W3212026756","https://openalex.org/W4211108564","https://openalex.org/W4220741568","https://openalex.org/W4236868170","https://openalex.org/W4238614602","https://openalex.org/W4293023348","https://openalex.org/W4312636847","https://openalex.org/W4313377427","https://openalex.org/W4379984096","https://openalex.org/W4383066328","https://openalex.org/W4386764239","https://openalex.org/W4388709727","https://openalex.org/W4390874104","https://openalex.org/W4391341605","https://openalex.org/W4403021823"],"related_works":["https://openalex.org/W2986579802","https://openalex.org/W4389237622","https://openalex.org/W3108691306","https://openalex.org/W4385753159","https://openalex.org/W4200152843","https://openalex.org/W4214914769","https://openalex.org/W4387251107","https://openalex.org/W2166309310","https://openalex.org/W4410617479","https://openalex.org/W4297621941"],"abstract_inverted_index":{"Optical":[0],"flow":[1,50,127,229],"estimation":[2,51,230],"constitutes":[3],"a":[4,42,117,136],"fundamental":[5],"computational":[6,142],"challenge":[7],"in":[8,56,102,173,227],"computer":[9],"vision,":[10],"with":[11,32,188],"critical":[12],"applications":[13],"object":[14],"trajectory":[15],"prediction,":[16],"depth":[17],"reconstruction,":[18],"and":[19,59,97,157,223],"autonomous":[20],"navigation":[21],"systems.":[22],"The":[23],"emergence":[24],"of":[25,48,84,161,182,192,199],"neuromorphic":[26,64,114,212],"vision":[27],"systems,":[28],"integrating":[29],"event-driven":[30,112,221],"cameras":[31],"spiking":[33],"neural":[34],"networks":[35],"(SNNs),":[36],"has":[37],"recently":[38],"gained":[39],"attention":[40],"as":[41],"promising":[43],"paradigm":[44],"for":[45,71,124],"edge":[46],"deployment":[47],"optical":[49,126,162,228],"due":[52],"to":[53,93,153,167],"their":[54],"advantages":[55],"ultralow":[57,189],"power":[58,190],"resource":[60],"efficiency.":[61],"However,":[62],"current":[63],"computing":[65,99,213],"platforms":[66],"lack":[67],"specialized":[68],"architectures":[69,80],"optimized":[70],"this":[72],"problem":[73],"domain.":[74],"Existing":[75],"implementations":[76],"either":[77],"prioritize":[78],"configurable":[79],"at":[81],"the":[82,95,209,218],"expense":[83],"energy":[85,197,224],"efficiency":[86,198],"or":[87],"employ":[88],"intricate":[89],"hardware":[90],"control":[91],"mechanisms":[92],"manage":[94],"asynchronous":[96,113],"sparse":[98,170],"patterns":[100],"inherent":[101,226],"SNNs.":[103],"To":[104],"address":[105],"these":[106],"limitations,":[107],"we":[108],"present":[109],"ASNA-Flow,":[110],"an":[111],"accelerator":[115],"featuring":[116],"pioneering":[118],"algorithm\u2013hardware":[119],"co-design":[120],"framework":[121],"specifically":[122],"tailored":[123],"event-based":[125],"estimation.":[128],"Our":[129],"methodology":[130],"encompasses":[131],"three":[132],"key":[133],"innovations:":[134],"1)":[135],"hardware-aware":[137],"algorithm":[138],"optimization":[139],"that":[140,215],"maintains":[141],"fidelity":[143],"while":[144],"enhancing":[145],"implementation":[146],"efficiency;":[147],"2)":[148],"systematic":[149],"data":[150],"pattern":[151],"analysis":[152],"inform":[154],"architectural":[155],"decisions;":[156],"3)":[158],"novel":[159],"exploitation":[160],"flow\u2019s":[163],"spatial":[164],"locality":[165],"characteristics":[166],"enable":[168],"efficient":[169],"computing.":[171],"Implemented":[172],"TSMC":[174],"28-nm":[175],"CMOS":[176],"technology,":[177],"ASNA-Flow":[178],"achieves":[179],"real-time":[180],"performance":[181],"104":[183],"frames":[184],"per":[185,202],"second":[186],"(FPS)":[187],"consumption":[191],"7.9":[193],"mW,":[194],"demonstrating":[195],"superior":[196],"0.3":[200],"pJ":[201],"synaptic":[203],"operation":[204],"(SOP).":[205],"This":[206],"work":[207],"establishes":[208],"first":[210],"dedicated":[211],"solution":[214],"simultaneously":[216],"addresses":[217],"temporal":[219],"sparsity,":[220],"processing,":[222],"constraints":[225],"tasks.":[231]},"counts_by_year":[],"updated_date":"2025-11-27T01:12:40.094763","created_date":"2025-10-10T00:00:00"}