{"id":"https://openalex.org/W2158614340","doi":"https://doi.org/10.1109/mmsp.2009.5293338","title":"Region-of-interest based H.264 encoder for videophone with a hardware macroblock level face detector","display_name":"Region-of-interest based H.264 encoder for videophone with a hardware macroblock level face detector","publication_year":2009,"publication_date":"2009-10-01","ids":{"openalex":"https://openalex.org/W2158614340","doi":"https://doi.org/10.1109/mmsp.2009.5293338","mag":"2158614340"},"language":"en","primary_location":{"id":"doi:10.1109/mmsp.2009.5293338","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mmsp.2009.5293338","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Workshop on Multimedia Signal Processing","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/A5077258711","display_name":"Tianruo Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Tianruo Zhang","raw_affiliation_strings":["Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan"],"affiliations":[{"raw_affiliation_string":"Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan","institution_ids":["https://openalex.org/I150744194"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100322200","display_name":"Chen Liu","orcid":"https://orcid.org/0000-0003-1558-6836"},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Chen Liu","raw_affiliation_strings":["Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan"],"affiliations":[{"raw_affiliation_string":"Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan","institution_ids":["https://openalex.org/I150744194"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100376899","display_name":"Minghui Wang","orcid":"https://orcid.org/0000-0002-1594-136X"},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Minghui Wang","raw_affiliation_strings":["Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan"],"affiliations":[{"raw_affiliation_string":"Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan","institution_ids":["https://openalex.org/I150744194"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101825973","display_name":"Satoshi Goto","orcid":"https://orcid.org/0000-0002-6387-048X"},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Satoshi Goto","raw_affiliation_strings":["Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan"],"affiliations":[{"raw_affiliation_string":"Graduate School of Information, Production and Systems, Waseda University, Fukuoka, Japan","institution_ids":["https://openalex.org/I150744194"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5077258711"],"corresponding_institution_ids":["https://openalex.org/I150744194"],"apc_list":null,"apc_paid":null,"fwci":2.4672,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.89521039,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10741","display_name":"Video Coding and Compression Technologies","score":0.9994999766349792,"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":0.9994999766349792,"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":0.996399998664856,"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"}},{"id":"https://openalex.org/T11165","display_name":"Image and Video Quality Assessment","score":0.9848999977111816,"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/videophone","display_name":"Videophone","score":0.9136224985122681},{"id":"https://openalex.org/keywords/macroblock","display_name":"Macroblock","score":0.8937839269638062},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8177496194839478},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.7607141733169556},{"id":"https://openalex.org/keywords/videotelephony","display_name":"Videotelephony","score":0.7158330678939819},{"id":"https://openalex.org/keywords/region-of-interest","display_name":"Region of interest","score":0.5513812303543091},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4727804660797119},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.46835675835609436},{"id":"https://openalex.org/keywords/pipeline","display_name":"Pipeline (software)","score":0.449256956577301},{"id":"https://openalex.org/keywords/rate\u2013distortion-optimization","display_name":"Rate\u2013distortion optimization","score":0.41756880283355713},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.332729309797287},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2613975703716278},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.20314764976501465},{"id":"https://openalex.org/keywords/video-tracking","display_name":"Video tracking","score":0.1410219669342041},{"id":"https://openalex.org/keywords/multiview-video-coding","display_name":"Multiview Video Coding","score":0.13745161890983582},{"id":"https://openalex.org/keywords/video-processing","display_name":"Video processing","score":0.13440635800361633}],"concepts":[{"id":"https://openalex.org/C2777880623","wikidata":"https://www.wikidata.org/wiki/Q854954","display_name":"Videophone","level":2,"score":0.9136224985122681},{"id":"https://openalex.org/C124828224","wikidata":"https://www.wikidata.org/wiki/Q2632668","display_name":"Macroblock","level":3,"score":0.8937839269638062},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8177496194839478},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.7607141733169556},{"id":"https://openalex.org/C540522513","wikidata":"https://www.wikidata.org/wiki/Q854954","display_name":"Videotelephony","level":2,"score":0.7158330678939819},{"id":"https://openalex.org/C19609008","wikidata":"https://www.wikidata.org/wiki/Q2138203","display_name":"Region of interest","level":2,"score":0.5513812303543091},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4727804660797119},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.46835675835609436},{"id":"https://openalex.org/C43521106","wikidata":"https://www.wikidata.org/wiki/Q2165493","display_name":"Pipeline (software)","level":2,"score":0.449256956577301},{"id":"https://openalex.org/C50056821","wikidata":"https://www.wikidata.org/wiki/Q774502","display_name":"Rate\u2013distortion optimization","level":5,"score":0.41756880283355713},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.332729309797287},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2613975703716278},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.20314764976501465},{"id":"https://openalex.org/C202474056","wikidata":"https://www.wikidata.org/wiki/Q1931635","display_name":"Video tracking","level":3,"score":0.1410219669342041},{"id":"https://openalex.org/C23431618","wikidata":"https://www.wikidata.org/wiki/Q1404672","display_name":"Multiview Video Coding","level":4,"score":0.13745161890983582},{"id":"https://openalex.org/C65483669","wikidata":"https://www.wikidata.org/wiki/Q3536669","display_name":"Video processing","level":2,"score":0.13440635800361633},{"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/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/mmsp.2009.5293338","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mmsp.2009.5293338","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Workshop on Multimedia Signal Processing","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":0.8500000238418579}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W1707366213","https://openalex.org/W1996443413","https://openalex.org/W2009768507","https://openalex.org/W2068275040","https://openalex.org/W2101700394","https://openalex.org/W2113172355","https://openalex.org/W2113581782","https://openalex.org/W2115376203","https://openalex.org/W2119706443","https://openalex.org/W2154053734","https://openalex.org/W2160945009","https://openalex.org/W2170304073","https://openalex.org/W2171025892","https://openalex.org/W2276329208","https://openalex.org/W2788745675","https://openalex.org/W3097096317","https://openalex.org/W6675207249","https://openalex.org/W6678044696"],"related_works":["https://openalex.org/W2537711511","https://openalex.org/W2059216511","https://openalex.org/W2151858318","https://openalex.org/W2391371711","https://openalex.org/W1986525405","https://openalex.org/W2178179864","https://openalex.org/W2092414108","https://openalex.org/W2104879635","https://openalex.org/W2158614340","https://openalex.org/W2147018030"],"abstract_inverted_index":{"Region-of-interest":[0],"(ROI)":[1],"can":[2,63,79],"be":[3,64,80],"applied":[4],"in":[5,27,77,131,147],"H.264":[6,68,112],"video":[7],"encoder":[8,26,69,113],"to":[9,40,119,145],"enhance":[10,120],"subjective":[11,121],"quality":[12,122],"and":[13,62,91,123],"reduce":[14,124],"computation":[15],"complexity.":[16,128],"For":[17],"the":[18,125],"aiming":[19],"application":[20],"of":[21,48,84,94],"low":[22],"cost":[23],"hardware":[24],"real-time":[25],"videophone":[28],"with":[29,66,114],"faces":[30,78],"as":[31,45],"ROI,":[32],"this":[33],"paper":[34],"proposes":[35],"a":[36,49,58,67],"face":[37,50,54,86],"detection":[38,55,87],"algorithm":[39,56,88],"detect":[41],"each":[42],"macroblock":[43],"(MB)":[44],"one":[46],"part":[47],"or":[51],"not.":[52],"This":[53],"has":[57],"unique":[59],"estimation-and-verification":[60],"process":[61],"combined":[65],"by":[70],"MB":[71],"level":[72],"pipeline":[73],"architecture.":[74],"97.91%":[75],"MBs":[76],"detected.":[81],"VLSI":[82],"architecture":[83],"proposed":[85,118],"is":[89,98,102,117,143],"designed":[90],"an":[92],"area":[93],"4.3":[95],"k":[96],"gates":[97],"achieved.":[99],"Power":[100],"consumption":[101],"only":[103],"1.45":[104],"mW":[105],"at":[106],"100":[107],"MHz.":[108],"A":[109],"ROI":[110,132],"based":[111],"dynamic":[115],"parameters":[116],"rate-distortion-optimization":[126],"(RDO)":[127],"The":[129],"PSNR":[130],"increases":[133],"for":[134],"4.8":[135],"dB":[136],"under":[137],"similar":[138],"bit":[139],"rate.":[140],"Encoding":[141],"time":[142],"reduced":[144],"54.4%":[146],"videophone-like":[148],"sequences.":[149]},"counts_by_year":[{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
