{"id":"https://openalex.org/W2097633388","doi":"https://doi.org/10.1145/1026711.1026719","title":"Key-frame extraction algorithm using entropy difference","display_name":"Key-frame extraction algorithm using entropy difference","publication_year":2004,"publication_date":"2004-10-15","ids":{"openalex":"https://openalex.org/W2097633388","doi":"https://doi.org/10.1145/1026711.1026719","mag":"2097633388"},"language":"en","primary_location":{"id":"doi:10.1145/1026711.1026719","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1026711.1026719","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 6th ACM SIGMM international workshop on Multimedia information retrieval","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/A5029001932","display_name":"Markos Mentzelopoulos","orcid":"https://orcid.org/0000-0002-0799-8673"},"institutions":[{"id":"https://openalex.org/I94951947","display_name":"University of Westminster","ror":"https://ror.org/04ycpbx82","country_code":"GB","type":"education","lineage":["https://openalex.org/I94951947"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Markos Mentzelopoulos","raw_affiliation_strings":["University of Westminster, Harrow, UK","University of Westminster, Harrow, UK#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Westminster, Harrow, UK","institution_ids":["https://openalex.org/I94951947"]},{"raw_affiliation_string":"University of Westminster, Harrow, UK#TAB#","institution_ids":["https://openalex.org/I94951947"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063682950","display_name":"\u0391\u03bb\u03b5\u03be\u03ac\u03bd\u03b4\u03c1\u03b1 \u03a8\u03b1\u03c1\u03c1\u03bf\u03cd","orcid":"https://orcid.org/0000-0003-3167-3454"},"institutions":[{"id":"https://openalex.org/I94951947","display_name":"University of Westminster","ror":"https://ror.org/04ycpbx82","country_code":"GB","type":"education","lineage":["https://openalex.org/I94951947"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Alexandra Psarrou","raw_affiliation_strings":["University of Westminster, Harrow, UK","University of Westminster, Harrow, UK#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Westminster, Harrow, UK","institution_ids":["https://openalex.org/I94951947"]},{"raw_affiliation_string":"University of Westminster, Harrow, UK#TAB#","institution_ids":["https://openalex.org/I94951947"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I94951947"],"apc_list":null,"apc_paid":null,"fwci":1.4269,"has_fulltext":false,"cited_by_count":65,"citation_normalized_percentile":{"value":0.80535812,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"39","last_page":"45"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11439","display_name":"Video Analysis and Summarization","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T11439","display_name":"Video Analysis and Summarization","score":1.0,"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/T11309","display_name":"Music and Audio Processing","score":0.996999979019165,"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/T10627","display_name":"Advanced Image and Video Retrieval Techniques","score":0.9921000003814697,"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/computer-science","display_name":"Computer science","score":0.8614760637283325},{"id":"https://openalex.org/keywords/key-frame","display_name":"Key frame","score":0.7960070371627808},{"id":"https://openalex.org/keywords/search-engine-indexing","display_name":"Search engine indexing","score":0.695841908454895},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.6037924289703369},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.49381861090660095},{"id":"https://openalex.org/keywords/entropy","display_name":"Entropy (arrow of time)","score":0.4882564842700958},{"id":"https://openalex.org/keywords/video-browsing","display_name":"Video browsing","score":0.48324450850486755},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.47175484895706177},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.46969175338745117},{"id":"https://openalex.org/keywords/video-compression-picture-types","display_name":"Video compression picture types","score":0.4344120919704437},{"id":"https://openalex.org/keywords/block-matching-algorithm","display_name":"Block-matching algorithm","score":0.4339859187602997},{"id":"https://openalex.org/keywords/frame","display_name":"Frame (networking)","score":0.4285227656364441},{"id":"https://openalex.org/keywords/video-tracking","display_name":"Video tracking","score":0.42763108015060425},{"id":"https://openalex.org/keywords/algorithm-design","display_name":"Algorithm design","score":0.4106552004814148},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.40819475054740906},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.38085678219795227},{"id":"https://openalex.org/keywords/video-processing","display_name":"Video processing","score":0.30511510372161865}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8614760637283325},{"id":"https://openalex.org/C2780139006","wikidata":"https://www.wikidata.org/wiki/Q1493902","display_name":"Key frame","level":3,"score":0.7960070371627808},{"id":"https://openalex.org/C75165309","wikidata":"https://www.wikidata.org/wiki/Q2258979","display_name":"Search engine indexing","level":2,"score":0.695841908454895},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.6037924289703369},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.49381861090660095},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.4882564842700958},{"id":"https://openalex.org/C2775856596","wikidata":"https://www.wikidata.org/wiki/Q25141683","display_name":"Video browsing","level":4,"score":0.48324450850486755},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.47175484895706177},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.46969175338745117},{"id":"https://openalex.org/C106030495","wikidata":"https://www.wikidata.org/wiki/Q1797012","display_name":"Video compression picture types","level":4,"score":0.4344120919704437},{"id":"https://openalex.org/C167510206","wikidata":"https://www.wikidata.org/wiki/Q2835824","display_name":"Block-matching algorithm","level":4,"score":0.4339859187602997},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.4285227656364441},{"id":"https://openalex.org/C202474056","wikidata":"https://www.wikidata.org/wiki/Q1931635","display_name":"Video tracking","level":3,"score":0.42763108015060425},{"id":"https://openalex.org/C106516650","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm design","level":2,"score":0.4106552004814148},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.40819475054740906},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.38085678219795227},{"id":"https://openalex.org/C65483669","wikidata":"https://www.wikidata.org/wiki/Q3536669","display_name":"Video processing","level":2,"score":0.30511510372161865},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","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/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1145/1026711.1026719","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1026711.1026719","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 6th ACM SIGMM international workshop on Multimedia information retrieval","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.158.1057","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.158.1057","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://perun.hscs.wmin.ac.uk/cvir/attachments/paper1.pdf","raw_type":"text"},{"id":"pmh:oai:westminsterresearch.westminster.ac.uk:93379","is_oa":false,"landing_page_url":"https://westminsterresearch.westminster.ac.uk/item/93379/key-frame-extraction-algorithm-using-entropy-difference","pdf_url":null,"source":{"id":"https://openalex.org/S4306400277","display_name":"WestminsterResearch (University of Westminster)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I94951947","host_organization_name":"University of Westminster","host_organization_lineage":["https://openalex.org/I94951947"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":24,"referenced_works":["https://openalex.org/W256534578","https://openalex.org/W1490242506","https://openalex.org/W1530887066","https://openalex.org/W1565064500","https://openalex.org/W1592458933","https://openalex.org/W1699734612","https://openalex.org/W1776985898","https://openalex.org/W1864693642","https://openalex.org/W1940024881","https://openalex.org/W1970372784","https://openalex.org/W2006830243","https://openalex.org/W2027899226","https://openalex.org/W2085425470","https://openalex.org/W2091755386","https://openalex.org/W2098120171","https://openalex.org/W2098498971","https://openalex.org/W2107617512","https://openalex.org/W2112360012","https://openalex.org/W2118598759","https://openalex.org/W2124201137","https://openalex.org/W2136309006","https://openalex.org/W3041275281","https://openalex.org/W6629402082","https://openalex.org/W6677746796"],"related_works":["https://openalex.org/W2782365651","https://openalex.org/W2100570504","https://openalex.org/W1995589563","https://openalex.org/W3123991145","https://openalex.org/W2550090663","https://openalex.org/W2019339419","https://openalex.org/W4382053412","https://openalex.org/W2390301146","https://openalex.org/W2379860320","https://openalex.org/W2119841267"],"abstract_inverted_index":{"The":[0,14,30],"fast":[1],"evolution":[2],"of":[3,12,52,66,86],"the":[4,67,74,87,97],"digital":[5],"video":[6,25,39,53,91,106],"technology":[7],"has":[8],"opened":[9],"new":[10],"areas":[11],"research.":[13],"most":[15],"important":[16],"aspect":[17],"will":[18,43],"be":[19],"to":[20,23,34],"develop":[21],"algorithms":[22],"perform":[24],"cataloguing,":[26],"indexing":[27],"and":[28],"retrieval.":[29],"basic":[31],"step":[32],"is":[33,99],"find":[35],"a":[36,49],"way":[37],"for":[38,47],"abstraction,":[40],"as":[41],"this":[42,60],"help":[44],"us":[45],"more":[46],"browsing":[48],"large":[50],"set":[51],"data":[54],"with":[55],"sufficient":[56],"content":[57],"representation.":[58],"In":[59],"paper":[61],"we":[62],"present":[63,84],"an":[64,76],"overview":[65],"current":[68],"key-frame":[69],"extraction":[70],"algorithms.":[71],"We":[72,83],"propose":[73],"Entropy-Difference,":[75],"algorithm":[77,88,98],"that":[78,96],"performs":[79],"spatial":[80],"frame":[81],"segmentation.":[82],"evaluation":[85],"on":[89],"several":[90],"clips.":[92],"Quantitative":[93],"results":[94],"show":[95],"successful":[100],"in":[101],"helping":[102],"annotators":[103],"automatically":[104],"identify":[105],"key-frames":[107]},"counts_by_year":[{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":6},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":6},{"year":2013,"cited_by_count":7},{"year":2012,"cited_by_count":4}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}