{"id":"https://openalex.org/W2922325550","doi":"https://doi.org/10.1109/lascas.2019.8667581","title":"Low-Power and High-Throughput Approximate 4\u00d74 DCT Hardware Architecture","display_name":"Low-Power and High-Throughput Approximate 4\u00d74 DCT Hardware Architecture","publication_year":2019,"publication_date":"2019-02-01","ids":{"openalex":"https://openalex.org/W2922325550","doi":"https://doi.org/10.1109/lascas.2019.8667581","mag":"2922325550"},"language":"en","primary_location":{"id":"doi:10.1109/lascas.2019.8667581","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lascas.2019.8667581","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE 10th Latin American Symposium on Circuits & Systems (LASCAS)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5047394145","display_name":"Mateus Leme","orcid":null},"institutions":[{"id":"https://openalex.org/I169248161","display_name":"Universidade Federal de Pelotas","ror":"https://ror.org/05msy9z54","country_code":"BR","type":"education","lineage":["https://openalex.org/I169248161"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Mateus Leme","raw_affiliation_strings":["Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)","institution_ids":["https://openalex.org/I169248161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028595724","display_name":"Luciano Braatz","orcid":"https://orcid.org/0000-0003-2385-8918"},"institutions":[{"id":"https://openalex.org/I169248161","display_name":"Universidade Federal de Pelotas","ror":"https://ror.org/05msy9z54","country_code":"BR","type":"education","lineage":["https://openalex.org/I169248161"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Luciano Braatz","raw_affiliation_strings":["Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)","institution_ids":["https://openalex.org/I169248161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014304350","display_name":"Daniel Palomino","orcid":"https://orcid.org/0000-0003-0409-8335"},"institutions":[{"id":"https://openalex.org/I169248161","display_name":"Universidade Federal de Pelotas","ror":"https://ror.org/05msy9z54","country_code":"BR","type":"education","lineage":["https://openalex.org/I169248161"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Daniel Palomino","raw_affiliation_strings":["Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)","institution_ids":["https://openalex.org/I169248161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070735330","display_name":"Luciano Agostini","orcid":"https://orcid.org/0000-0002-3421-5830"},"institutions":[{"id":"https://openalex.org/I169248161","display_name":"Universidade Federal de Pelotas","ror":"https://ror.org/05msy9z54","country_code":"BR","type":"education","lineage":["https://openalex.org/I169248161"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Luciano Agostini","raw_affiliation_strings":["Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)","institution_ids":["https://openalex.org/I169248161"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5081630912","display_name":"Marcelo Porto","orcid":"https://orcid.org/0000-0003-3827-3023"},"institutions":[{"id":"https://openalex.org/I169248161","display_name":"Universidade Federal de Pelotas","ror":"https://ror.org/05msy9z54","country_code":"BR","type":"education","lineage":["https://openalex.org/I169248161"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Marcelo Porto","raw_affiliation_strings":["Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Group of Architectures and Integrated Circuits (GACI) / Video Technology Research Group (ViTech) Computer Science Graduate Program (PPGC) / Federal University of Pelotas (Ufpel)","institution_ids":["https://openalex.org/I169248161"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I169248161"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"245","last_page":"248"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10363","display_name":"Low-power high-performance VLSI design","score":0.9995999932289124,"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/T10363","display_name":"Low-power high-performance VLSI design","score":0.9995999932289124,"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10741","display_name":"Video Coding and Compression Technologies","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/discrete-cosine-transform","display_name":"Discrete cosine transform","score":0.9143221378326416},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7734010815620422},{"id":"https://openalex.org/keywords/adder","display_name":"Adder","score":0.7298126220703125},{"id":"https://openalex.org/keywords/throughput","display_name":"Throughput","score":0.7020746469497681},{"id":"https://openalex.org/keywords/hardware-architecture","display_name":"Hardware architecture","score":0.5459619164466858},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.5331159234046936},{"id":"https://openalex.org/keywords/architecture","display_name":"Architecture","score":0.5027821063995361},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.45546871423721313},{"id":"https://openalex.org/keywords/mobile-device","display_name":"Mobile device","score":0.4403313100337982},{"id":"https://openalex.org/keywords/encoding","display_name":"Encoding (memory)","score":0.42594051361083984},{"id":"https://openalex.org/keywords/energy","display_name":"Energy (signal processing)","score":0.4138942062854767},{"id":"https://openalex.org/keywords/computer-architecture","display_name":"Computer architecture","score":0.3966429531574249},{"id":"https://openalex.org/keywords/embedded-system","display_name":"Embedded system","score":0.3624487519264221},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.257724791765213},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.1907849907875061},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.18511340022087097},{"id":"https://openalex.org/keywords/software","display_name":"Software","score":0.17033973336219788},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10700657963752747}],"concepts":[{"id":"https://openalex.org/C2221639","wikidata":"https://www.wikidata.org/wiki/Q2877","display_name":"Discrete cosine transform","level":3,"score":0.9143221378326416},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7734010815620422},{"id":"https://openalex.org/C164620267","wikidata":"https://www.wikidata.org/wiki/Q376953","display_name":"Adder","level":3,"score":0.7298126220703125},{"id":"https://openalex.org/C157764524","wikidata":"https://www.wikidata.org/wiki/Q1383412","display_name":"Throughput","level":3,"score":0.7020746469497681},{"id":"https://openalex.org/C65232700","wikidata":"https://www.wikidata.org/wiki/Q5656403","display_name":"Hardware architecture","level":3,"score":0.5459619164466858},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.5331159234046936},{"id":"https://openalex.org/C123657996","wikidata":"https://www.wikidata.org/wiki/Q12271","display_name":"Architecture","level":2,"score":0.5027821063995361},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.45546871423721313},{"id":"https://openalex.org/C186967261","wikidata":"https://www.wikidata.org/wiki/Q5082128","display_name":"Mobile device","level":2,"score":0.4403313100337982},{"id":"https://openalex.org/C125411270","wikidata":"https://www.wikidata.org/wiki/Q18653","display_name":"Encoding (memory)","level":2,"score":0.42594051361083984},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.4138942062854767},{"id":"https://openalex.org/C118524514","wikidata":"https://www.wikidata.org/wiki/Q173212","display_name":"Computer architecture","level":1,"score":0.3966429531574249},{"id":"https://openalex.org/C149635348","wikidata":"https://www.wikidata.org/wiki/Q193040","display_name":"Embedded system","level":1,"score":0.3624487519264221},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.257724791765213},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.1907849907875061},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.18511340022087097},{"id":"https://openalex.org/C2777904410","wikidata":"https://www.wikidata.org/wiki/Q7397","display_name":"Software","level":2,"score":0.17033973336219788},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10700657963752747},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C82876162","wikidata":"https://www.wikidata.org/wiki/Q17096504","display_name":"Latency (audio)","level":2,"score":0.0},{"id":"https://openalex.org/C153349607","wikidata":"https://www.wikidata.org/wiki/Q36649","display_name":"Visual arts","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/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lascas.2019.8667581","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lascas.2019.8667581","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE 10th Latin American Symposium on Circuits & Systems (LASCAS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.8999999761581421}],"awards":[],"funders":[{"id":"https://openalex.org/F4320320719","display_name":"Department of Science and Technology, Ministry of Science and Technology, India","ror":"https://ror.org/0101xrq71"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1968988164","https://openalex.org/W1980792802","https://openalex.org/W2020217519","https://openalex.org/W2129394555","https://openalex.org/W2135089667","https://openalex.org/W2146395539","https://openalex.org/W2413256711","https://openalex.org/W2510945427","https://openalex.org/W2774256319","https://openalex.org/W2979673094","https://openalex.org/W2979990382","https://openalex.org/W6769015554"],"related_works":["https://openalex.org/W4390550886","https://openalex.org/W3217463396","https://openalex.org/W2790557758","https://openalex.org/W2516396101","https://openalex.org/W3204929712","https://openalex.org/W4295102875","https://openalex.org/W2300671402","https://openalex.org/W2015457513","https://openalex.org/W4312888585","https://openalex.org/W2113605647"],"abstract_inverted_index":{"Mobile":[0],"devices":[1],"with":[2,95],"multimedia":[3,20,46],"processing":[4],"capabilities":[5],"are":[6,22,81],"becoming":[7],"more":[8,10],"and":[9,119],"present,":[11],"despite":[12],"their":[13],"energy":[14],"restrictions.":[15],"On":[16],"the":[17,32,43,69],"other":[18],"hand,":[19],"applications":[21],"very":[23],"demanding":[24,45],"tasks,":[25],"which":[26],"have":[27],"a":[28,127],"negative":[29],"impact":[30],"on":[31],"battery":[33],"lifetime":[34],"of":[35,42,83],"mobile":[36],"phones.":[37],"Nonetheless,":[38],"video":[39],"encoding,":[40],"one":[41,82],"most":[44],"applications,":[47],"can":[48],"benefit":[49],"from":[50],"approximate":[51,60,87,90,101],"computing":[52],"to":[53,86,112,117,123,129],"save":[54],"energy.":[55],"This":[56,89],"paper":[57],"proposes":[58],"an":[59],"4\u00d74":[61,102],"Discrete":[62],"Cosine":[63],"Transform":[64],"(DCT)":[65],"hardware":[66,91,104],"architecture":[67,92,105],"using":[68],"imprecise":[70,76],"Lower":[71],"Part-OR":[72],"Adder":[73],"(LOA).":[74],"The":[75,99],"operators,":[77],"such":[78],"as":[79],"LOA,":[80],"many":[84],"approaches":[85],"computing.":[88],"is":[93],"developed":[94],"different":[96],"imprecision":[97],"levels.":[98],"presented":[100],"DCT":[103],"synthesis":[106],"results":[107],"show":[108],"area":[109],"reduction":[110],"up":[111,116,122],"13.6%,":[113],"power":[114],"savings":[115],"23%":[118],"throughput":[120],"increase":[121],"26.45%":[124],"while":[125],"having":[126],"negligible":[128],"small":[130],"BD-Rate":[131],"impact.":[132]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2019,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}