{"id":"https://openalex.org/W2044322805","doi":"https://doi.org/10.1145/1232454.1232473","title":"A flexible content and context-based access control model for multimedia medical image database systems","display_name":"A flexible content and context-based access control model for multimedia medical image database systems","publication_year":2001,"publication_date":"2001-01-01","ids":{"openalex":"https://openalex.org/W2044322805","doi":"https://doi.org/10.1145/1232454.1232473","mag":"2044322805"},"language":"en","primary_location":{"id":"doi:10.1145/1232454.1232473","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1232454.1232473","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2001 workshop on Multimedia and security new challenges - MM&amp;Sec '01","raw_type":"proceedings-article"},"type":"conference-abstract","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/A5077704494","display_name":"Sofia Tzelepi","orcid":null},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Sofia K. Tzelepi","raw_affiliation_strings":["Aristotelian University, Thessaloniki, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aristotelian University, Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037888697","display_name":"Dimitrios Koukopoulos","orcid":"https://orcid.org/0000-0001-7019-4224"},"institutions":[{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Dimitrios K. Koukopoulos","raw_affiliation_strings":["Patras University, Patras, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Patras University, Patras, Greece","institution_ids":["https://openalex.org/I174878644"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108648866","display_name":"George Pangalos","orcid":null},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"George Pangalos","raw_affiliation_strings":["Aristotelian University, Thessaloniki, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aristotelian University, Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"52","last_page":"52"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10927","display_name":"Access Control and Trust","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10927","display_name":"Access Control and Trust","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":0.9995999932289124,"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/T11614","display_name":"Cloud Data Security Solutions","score":0.9969000220298767,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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":0.8484762907028198},{"id":"https://openalex.org/keywords/multimedia","display_name":"Multimedia","score":0.6290503144264221},{"id":"https://openalex.org/keywords/multimedia-database","display_name":"Multimedia database","score":0.5905548334121704},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5850465297698975},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.5136386752128601},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.43948492407798767},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.36702433228492737},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.35267171263694763},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.171343594789505}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8484762907028198},{"id":"https://openalex.org/C49774154","wikidata":"https://www.wikidata.org/wiki/Q131765","display_name":"Multimedia","level":1,"score":0.6290503144264221},{"id":"https://openalex.org/C2779061030","wikidata":"https://www.wikidata.org/wiki/Q12038942","display_name":"Multimedia database","level":2,"score":0.5905548334121704},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5850465297698975},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.5136386752128601},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.43948492407798767},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.36702433228492737},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.35267171263694763},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.171343594789505},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/1232454.1232473","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1232454.1232473","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2001 workshop on Multimedia and security new challenges - MM&amp;Sec '01","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1950283918","https://openalex.org/W1975156286","https://openalex.org/W2063838657","https://openalex.org/W2100798283","https://openalex.org/W2159848615","https://openalex.org/W2164836203","https://openalex.org/W2166602595"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2355862304","https://openalex.org/W2384888906","https://openalex.org/W2144190808","https://openalex.org/W2326310286","https://openalex.org/W2364091276","https://openalex.org/W2134894641","https://openalex.org/W32530703","https://openalex.org/W2237751238","https://openalex.org/W2464143477"],"abstract_inverted_index":{"In":[0,123],"many":[1],"health":[2],"care":[3],"information":[4],"systems":[5],"medical":[6,15,24,44,72,95,258],"images":[7,25,236],"are":[8,104,237,261],"an":[9,128,247],"important":[10],"part":[11],"of":[12,19,81,89,100,139,155,164,193,216,221,246],"the":[13,20,120,137,140,144,153,156,191,204,213,217,219,222,225,227,230,233,242],"multimedia":[14,23,71,94],"patient":[16,234],"record.":[17],"Most":[18],"work":[21],"on":[22,31,212],"security":[26,195],"until":[27],"now":[28],"has":[29],"focused":[30],"cryptographic":[32],"approaches.":[33],"While":[34],"valuable,":[35],"cryptography":[36],"is":[37,61],"not":[38],"enough":[39],"to":[40,43,65,84,86,118,158,170,173,206,238],"control":[41,59,68,132,169,183,188,249],"access":[42,58,67,85,102,131,168,182,187,209,248],"images.":[45],"Therefore":[46],"additional":[47],"protection":[48],"approaches":[49],"should":[50],"be":[51,116,148,171,239],"applied":[52],"at":[53],"a":[54,62,70,93,252,256],"higher":[55],"level.":[56],"Role-based":[57],"(RBAC)":[60],"good":[63],"candidate":[64],"provide":[66],"in":[69,92,136,150],"image":[73,96,101,259],"database":[74,97],"system.":[75],"Roles":[76],"accurately":[77],"describe":[78,127],"which":[79,146],"types":[80,88],"people":[82],"need":[83],"certain":[87],"objects.":[90],"However,":[91],"system,":[98],"specifications":[99],"rights":[103],"often":[105],"content":[106,215],"and":[107,180,201,232,241,251],"context-dependent":[108],"as":[109,111],"well":[110],"time-dependent.":[112],"Unfortunately,":[113],"RBAC":[114],"cannot":[115],"used":[117],"handle":[119],"above":[121],"requirements.":[122],"this":[124],"paper":[125],"we":[126],"extended":[129],"role-based":[130,167],"model":[133,189],"by":[134],"considering,":[135],"specification":[138],"Role-Permission":[141],"relationship":[142,228],"phase,":[143],"constraints":[145,165],"must":[147],"satisfied":[149],"order":[151],"for":[152,255],"holders":[154],"permission":[157],"use":[159,163],"those":[160],"permissions.":[161],"The":[162,185,244],"allows":[166],"tailored":[172],"specify":[174,207],"very":[175],"fine-grained,":[176],"flexible,":[177],"content,":[178],"context":[179],"time-based":[181],"policies.":[184],"proposed":[186],"preserves":[190],"advantages":[192],"scaleable":[194],"administration":[196],"that":[197],"RBAC-style":[198],"models":[199],"offer":[200],"yet":[202],"offers":[203],"flexibility":[205],"complex":[208],"restrictions":[210],"based":[211],"semantic":[214],"images,":[218],"attributes":[220],"user":[223,231],"accessing":[224],"image,":[226],"between":[229],"whose":[235],"accessed":[240],"time.":[243],"description":[245],"algorithm":[250],"system":[253],"architecture":[254],"secure":[257],"DBMS":[260],"also":[262],"presented.":[263]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
