{"id":"https://openalex.org/W1989960713","doi":"https://doi.org/10.1145/2448556.2448613","title":"Proposal of CAPTCHA using three dimensional objects","display_name":"Proposal of CAPTCHA using three dimensional objects","publication_year":2013,"publication_date":"2013-01-17","ids":{"openalex":"https://openalex.org/W1989960713","doi":"https://doi.org/10.1145/2448556.2448613","mag":"1989960713"},"language":"en","primary_location":{"id":"doi:10.1145/2448556.2448613","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2448556.2448613","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 7th International Conference on Ubiquitous Information Management and Communication","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/A5048048485","display_name":"Kenta Kunitani","orcid":null},"institutions":[{"id":"https://openalex.org/I148798404","display_name":"Tokyo University of Technology","ror":"https://ror.org/021a26605","country_code":"JP","type":"education","lineage":["https://openalex.org/I148798404"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Kenta Kunitani","raw_affiliation_strings":["Tokyo University of Technology, Hachioji City, Japan","Tokyo University of Technology, Hachioji City, Japan#TAB#"],"affiliations":[{"raw_affiliation_string":"Tokyo University of Technology, Hachioji City, Japan","institution_ids":["https://openalex.org/I148798404"]},{"raw_affiliation_string":"Tokyo University of Technology, Hachioji City, Japan#TAB#","institution_ids":["https://openalex.org/I148798404"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108726661","display_name":"Ryuya Uda","orcid":null},"institutions":[{"id":"https://openalex.org/I148798404","display_name":"Tokyo University of Technology","ror":"https://ror.org/021a26605","country_code":"JP","type":"education","lineage":["https://openalex.org/I148798404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryuya Uda","raw_affiliation_strings":["Tokyo University of Technology, Hachioji City, Tokyo, Japan","Tokyo University of Technology, Hachioji City, Tokyo, Japan#TAB#"],"affiliations":[{"raw_affiliation_string":"Tokyo University of Technology, Hachioji City, Tokyo, Japan","institution_ids":["https://openalex.org/I148798404"]},{"raw_affiliation_string":"Tokyo University of Technology, Hachioji City, Tokyo, Japan#TAB#","institution_ids":["https://openalex.org/I148798404"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5048048485"],"corresponding_institution_ids":["https://openalex.org/I148798404"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.15470033,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":96,"max":97},"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/T11800","display_name":"User Authentication and Security Systems","score":0.9997000098228455,"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"}},"topics":[{"id":"https://openalex.org/T11800","display_name":"User Authentication and Security Systems","score":0.9997000098228455,"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"}},{"id":"https://openalex.org/T10828","display_name":"Biometric Identification and Security","score":0.9732999801635742,"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/T12029","display_name":"DNA and Biological Computing","score":0.9664999842643738,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/captcha","display_name":"CAPTCHA","score":0.9915573000907898},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7969365119934082},{"id":"https://openalex.org/keywords/software","display_name":"Software","score":0.6559057235717773},{"id":"https://openalex.org/keywords/amodal-perception","display_name":"Amodal perception","score":0.5821324586868286},{"id":"https://openalex.org/keywords/robot","display_name":"Robot","score":0.4870155453681946},{"id":"https://openalex.org/keywords/countermeasure","display_name":"Countermeasure","score":0.4596635103225708},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4280291199684143},{"id":"https://openalex.org/keywords/human\u2013computer-interaction","display_name":"Human\u2013computer interaction","score":0.4080143868923187},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.14030081033706665},{"id":"https://openalex.org/keywords/perception","display_name":"Perception","score":0.12470462918281555},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.08646836876869202}],"concepts":[{"id":"https://openalex.org/C163339463","wikidata":"https://www.wikidata.org/wiki/Q484598","display_name":"CAPTCHA","level":2,"score":0.9915573000907898},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7969365119934082},{"id":"https://openalex.org/C2777904410","wikidata":"https://www.wikidata.org/wiki/Q7397","display_name":"Software","level":2,"score":0.6559057235717773},{"id":"https://openalex.org/C174478892","wikidata":"https://www.wikidata.org/wiki/Q4747455","display_name":"Amodal perception","level":3,"score":0.5821324586868286},{"id":"https://openalex.org/C90509273","wikidata":"https://www.wikidata.org/wiki/Q11012","display_name":"Robot","level":2,"score":0.4870155453681946},{"id":"https://openalex.org/C21593369","wikidata":"https://www.wikidata.org/wiki/Q1032176","display_name":"Countermeasure","level":2,"score":0.4596635103225708},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4280291199684143},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.4080143868923187},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.14030081033706665},{"id":"https://openalex.org/C26760741","wikidata":"https://www.wikidata.org/wiki/Q160402","display_name":"Perception","level":2,"score":0.12470462918281555},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.08646836876869202},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2448556.2448613","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2448556.2448613","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 7th International Conference on Ubiquitous Information Management and Communication","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/W1552934261","https://openalex.org/W1966948303","https://openalex.org/W1996117683","https://openalex.org/W2050830699","https://openalex.org/W2099256741","https://openalex.org/W2143451523","https://openalex.org/W4233730708"],"related_works":["https://openalex.org/W3134776999","https://openalex.org/W2028308373","https://openalex.org/W2064097623","https://openalex.org/W1966530388","https://openalex.org/W1975364925","https://openalex.org/W2566963304","https://openalex.org/W2567224214","https://openalex.org/W2616558290","https://openalex.org/W2316426004","https://openalex.org/W2400471701"],"abstract_inverted_index":{"Over":[0],"the":[1,23,80,120,155,163],"last":[2],"few":[3],"years,":[4],"unfair":[5],"use":[6],"of":[7,30,119,128,137,165],"web":[8,31],"services":[9],"by":[10,68],"robot":[11,24,51],"software":[12,25,70],"has":[13],"grown":[14],"a":[15,39,44,47,58,77,103,159],"quite":[16],"big":[17],"problem.":[18],"In":[19],"order":[20,152],"to":[21,60,72,97,147,153,162],"prevent":[22],"from":[26],"obtaining":[27],"new":[28,104],"accounts":[29],"services,":[32],"CAPTCHA":[33,37,56,87,112],"is":[34,38,46,57,66,92,109,117,130,145],"popularly":[35],"used.":[36],"method":[40,59],"which":[41,107,116],"confirms":[42],"whether":[43],"user":[45],"human":[48,95,121],"being":[49],"or":[50],"software.":[52],"The":[53],"most":[54],"popular":[55],"read":[61,98],"distorted":[62,84],"letters.":[63],"However,":[64,90,125],"it":[65,91],"analyzed":[67],"computer":[69,129,160],"according":[71],"developing":[73],"OCR":[74,81],"technology.":[75],"As":[76],"countermeasure":[78],"against":[79],"technology,":[82],"strongly":[83],"letters":[85],"for":[86,94,111,123,158],"are":[88],"proposed.":[89],"hard":[93],"beings":[96],"them.":[99],"Moreover,":[100],"there":[101],"appears":[102],"proposal":[105,133],"in":[106,140,151],"movie":[108],"used":[110],"with":[113],"amodal":[114,143],"completion":[115,144],"one":[118],"abilities":[122],"sight.":[124],"if":[126],"performance":[127],"developed,":[131],"that":[132],"might":[134],"become":[135],"out":[136],"use.":[138,167],"Therefore,":[139],"our":[141],"proposal,":[142],"applied":[146],"three":[148],"dimensional":[149],"objects":[150],"increase":[154],"calculation":[156],"cost":[157],"up":[161],"level":[164],"practical":[166]},"counts_by_year":[{"year":2023,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}