{"id":"https://openalex.org/W2060793593","doi":"https://doi.org/10.1109/afrcon.2011.6071998","title":"SIMD implementation of integer DCT and hadamard transforms in H.264/AVC encoder","display_name":"SIMD implementation of integer DCT and hadamard transforms in H.264/AVC encoder","publication_year":2011,"publication_date":"2011-09-01","ids":{"openalex":"https://openalex.org/W2060793593","doi":"https://doi.org/10.1109/afrcon.2011.6071998","mag":"2060793593"},"language":"en","primary_location":{"id":"doi:10.1109/afrcon.2011.6071998","is_oa":false,"landing_page_url":"https://doi.org/10.1109/afrcon.2011.6071998","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Africon '11","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/A5056299370","display_name":"Charles S. Lubobya","orcid":null},"institutions":[{"id":"https://openalex.org/I157614274","display_name":"University of Cape Town","ror":"https://ror.org/03p74gp79","country_code":"ZA","type":"education","lineage":["https://openalex.org/I157614274"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Charles S. Lubobya","raw_affiliation_strings":["Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","institution_ids":["https://openalex.org/I157614274"]},{"raw_affiliation_string":"DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa","institution_ids":["https://openalex.org/I157614274"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006086161","display_name":"Mqhele E. Dlodlo","orcid":"https://orcid.org/0000-0003-2364-2957"},"institutions":[{"id":"https://openalex.org/I157614274","display_name":"University of Cape Town","ror":"https://ror.org/03p74gp79","country_code":"ZA","type":"education","lineage":["https://openalex.org/I157614274"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Mqhele E. Dlodlo","raw_affiliation_strings":["Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","institution_ids":["https://openalex.org/I157614274"]},{"raw_affiliation_string":"DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa","institution_ids":["https://openalex.org/I157614274"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113822067","display_name":"G. de Jager","orcid":null},"institutions":[{"id":"https://openalex.org/I157614274","display_name":"University of Cape Town","ror":"https://ror.org/03p74gp79","country_code":"ZA","type":"education","lineage":["https://openalex.org/I157614274"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Gerhard de Jager","raw_affiliation_strings":["Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Cape Town, Cape Town, South Africa","institution_ids":["https://openalex.org/I157614274"]},{"raw_affiliation_string":"DEPARTMENT OF ELECTRICAL ENGINEERING, UNIVERSITY OF CAPE TOWN, South Africa","institution_ids":["https://openalex.org/I157614274"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5090943012","display_name":"K.L. Ferguson","orcid":null},"institutions":[{"id":"https://openalex.org/I21360634","display_name":"Council for Scientific and Industrial Research","ror":"https://ror.org/05j00sr48","country_code":"ZA","type":"government","lineage":["https://openalex.org/I21360634"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Keith L. Ferguson","raw_affiliation_strings":["Meraka Institute, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa","Meraka Institute, Council for Scientific and Industrial Research, Pretoria, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Meraka Institute, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa","institution_ids":["https://openalex.org/I21360634"]},{"raw_affiliation_string":"Meraka Institute, Council for Scientific and Industrial Research, Pretoria, South Africa","institution_ids":["https://openalex.org/I21360634"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.6242,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.66985802,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":95},"biblio":{"volume":"51","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10741","display_name":"Video Coding and Compression Technologies","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T10741","display_name":"Video Coding and Compression Technologies","score":0.9998000264167786,"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9961000084877014,"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/T10901","display_name":"Advanced Data Compression Techniques","score":0.9936000108718872,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/chrominance","display_name":"Chrominance","score":0.9035982489585876},{"id":"https://openalex.org/keywords/discrete-cosine-transform","display_name":"Discrete cosine transform","score":0.8491804599761963},{"id":"https://openalex.org/keywords/hadamard-transform","display_name":"Hadamard transform","score":0.6862226128578186},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6603758335113525},{"id":"https://openalex.org/keywords/simd","display_name":"SIMD","score":0.5593441128730774},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.49895644187927246},{"id":"https://openalex.org/keywords/transform-coding","display_name":"Transform coding","score":0.48543721437454224},{"id":"https://openalex.org/keywords/peak-signal-to-noise-ratio","display_name":"Peak signal-to-noise ratio","score":0.4617007374763489},{"id":"https://openalex.org/keywords/transcoding","display_name":"Transcoding","score":0.45021799206733704},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.42223939299583435},{"id":"https://openalex.org/keywords/luminance","display_name":"Luminance","score":0.29766952991485596},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.2492489218711853},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24583834409713745},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.23781007528305054},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.14227387309074402}],"concepts":[{"id":"https://openalex.org/C163204269","wikidata":"https://www.wikidata.org/wiki/Q355263","display_name":"Chrominance","level":3,"score":0.9035982489585876},{"id":"https://openalex.org/C2221639","wikidata":"https://www.wikidata.org/wiki/Q2877","display_name":"Discrete cosine transform","level":3,"score":0.8491804599761963},{"id":"https://openalex.org/C60292330","wikidata":"https://www.wikidata.org/wiki/Q1014065","display_name":"Hadamard transform","level":2,"score":0.6862226128578186},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6603758335113525},{"id":"https://openalex.org/C150552126","wikidata":"https://www.wikidata.org/wiki/Q339387","display_name":"SIMD","level":2,"score":0.5593441128730774},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.49895644187927246},{"id":"https://openalex.org/C169805256","wikidata":"https://www.wikidata.org/wiki/Q1361381","display_name":"Transform coding","level":4,"score":0.48543721437454224},{"id":"https://openalex.org/C154579607","wikidata":"https://www.wikidata.org/wiki/Q3373850","display_name":"Peak signal-to-noise ratio","level":3,"score":0.4617007374763489},{"id":"https://openalex.org/C134535813","wikidata":"https://www.wikidata.org/wiki/Q1888734","display_name":"Transcoding","level":2,"score":0.45021799206733704},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.42223939299583435},{"id":"https://openalex.org/C73313986","wikidata":"https://www.wikidata.org/wiki/Q355386","display_name":"Luminance","level":2,"score":0.29766952991485596},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.2492489218711853},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24583834409713745},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.23781007528305054},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.14227387309074402},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/afrcon.2011.6071998","is_oa":false,"landing_page_url":"https://doi.org/10.1109/afrcon.2011.6071998","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Africon '11","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.49000000953674316,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W110298896","https://openalex.org/W1571691309","https://openalex.org/W2047291297","https://openalex.org/W2116036986","https://openalex.org/W2140199336","https://openalex.org/W2145905710","https://openalex.org/W2488097972","https://openalex.org/W2505094182","https://openalex.org/W2548774592","https://openalex.org/W2551537610","https://openalex.org/W2987803397","https://openalex.org/W4400961909","https://openalex.org/W6769869828"],"related_works":["https://openalex.org/W2005759937","https://openalex.org/W2225603070","https://openalex.org/W2034025452","https://openalex.org/W3204377033","https://openalex.org/W2078173861","https://openalex.org/W2130884625","https://openalex.org/W2162248788","https://openalex.org/W2023088646","https://openalex.org/W2891442085","https://openalex.org/W2539735304"],"abstract_inverted_index":{"This":[0],"paper":[1],"investigates":[2],"Single":[3],"Input":[4],"Multiple":[5],"Data":[6],"(SIMD)":[7],"implementations":[8],"of":[9,52,73,86,94],"the":[10,29,33,39,43,47,53,61,100],"4\u00d74":[11,18],"integer":[12,76],"Discrete":[13],"Cosine":[14],"Transforms":[15],"(DCT)":[16],"and":[17,49,69,78,88,96,121],"Hadamard":[19,79],"transforms":[20,27,45,80],"in":[21,116,122],"H.264/AVC":[22],"video":[23,30,55,118],"encoders.":[24],"Integer":[25],"DCT":[26,77],"decomposes":[28,46],"signal":[31],"from":[32],"spatial":[34],"or":[35],"image":[36],"domain":[37,41],"to":[38,65,99],"frequency":[40],"while":[42],"Hadarmad":[44],"luminance":[48],"chrominance":[50],"component":[51],"same":[54,62],"signal.":[56],"Results":[57],"show":[58],"that":[59],"for":[60,114],"Peak":[63],"Signal":[64],"Noise":[66],"Ratio":[67],"(PSNR)":[68],"at":[70],"quality":[71],"factor":[72],"eight":[74],"(8),":[75],"have":[81],"a":[82,91],"computation":[83,107],"time":[84,108],"gain":[85],"14000ms":[87],"17000ms":[89],"representing":[90],"speed":[92],"up":[93],"45%":[95],"50%":[97],"compared":[98],"matrix":[101],"multiplication":[102],"method":[103],"respectively.":[104],"At":[105],"these":[106],"gains":[109],"our":[110],"implementation":[111],"is":[112],"suited":[113],"use":[115],"real-time":[117],"broadcasting/internet":[119],"applications":[120],"low":[123],"bandwidth":[124],"environments.":[125]},"counts_by_year":[{"year":2021,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}