{"id":"https://openalex.org/W133366681","doi":null,"title":"Contextless Object Recognition with Shape-enriched SIFT and Bags of Features","display_name":"Contextless Object Recognition with Shape-enriched SIFT and Bags of Features","publication_year":2014,"publication_date":"2014-08-28","ids":{"openalex":"https://openalex.org/W133366681","mag":"133366681"},"language":"en","primary_location":{"id":"pmh:oai:upcommons.upc.edu:2099.1/22390","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2099.1/22390","pdf_url":"http://hdl.handle.net/2099.1/22390","source":{"id":"https://openalex.org/S4377196262","display_name":"UPCommons institutional repository (Universitat Polit\u00e8cnica de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I9617848","host_organization_name":"Universitat Polit\u00e8cnica de Catalunya","host_organization_lineage":["https://openalex.org/I9617848"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/bachelorThesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/2099.1/22390","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5060752049","display_name":"Marcel Tella-Amo","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Marcel Tella Amo","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5060752049"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10627","display_name":"Advanced Image and Video Retrieval Techniques","score":0.9878000020980835,"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/T10627","display_name":"Advanced Image and Video Retrieval Techniques","score":0.9878000020980835,"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/T10824","display_name":"Image Retrieval and Classification Techniques","score":0.012299999594688416,"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/T10036","display_name":"Advanced Neural Network Applications","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/object-recognition","display_name":"object recognition","score":0.9039999842643738},{"id":"https://openalex.org/keywords/sift-descriptors","display_name":"SIFT descriptors","score":0.7670000195503235},{"id":"https://openalex.org/keywords/shape-features","display_name":"shape features","score":0.8840000033378601},{"id":"https://openalex.org/keywords/bag-of-words","display_name":"bag-of-words","score":0.8700000047683716},{"id":"https://openalex.org/keywords/feature-aggregation","display_name":"feature aggregation","score":0.7350000143051147},{"id":"https://openalex.org/keywords/textureless-objects","display_name":"textureless objects","score":0.7630000114440918},{"id":"https://openalex.org/keywords/feature-fusion","display_name":"feature fusion","score":0.5339999794960022},{"id":"https://openalex.org/keywords/caltech-101","display_name":"Caltech-101","score":0.8820000290870667}],"concepts":[{"id":"https://openalex.org/C61265191","wikidata":"https://www.wikidata.org/wiki/Q767770","display_name":"Scale-invariant feature transform","level":3,"score":0.7965666055679321},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7312436103820801},{"id":"https://openalex.org/C53533937","wikidata":"https://www.wikidata.org/wiki/Q185020","display_name":"Histogram","level":3,"score":0.705071210861206},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.6770191192626953},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.6130655407905579},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6006017923355103},{"id":"https://openalex.org/C129641003","wikidata":"https://www.wikidata.org/wiki/Q267189","display_name":"Active shape model","level":3,"score":0.5262419581413269},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.5122753977775574},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.48405545949935913},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.48383060097694397},{"id":"https://openalex.org/C64876066","wikidata":"https://www.wikidata.org/wiki/Q5141226","display_name":"Cognitive neuroscience of visual object recognition","level":3,"score":0.4683389663696289},{"id":"https://openalex.org/C17426736","wikidata":"https://www.wikidata.org/wiki/Q419918","display_name":"Histogram of oriented gradients","level":4,"score":0.4260020852088928},{"id":"https://openalex.org/C2781195486","wikidata":"https://www.wikidata.org/wiki/Q289436","display_name":"Texture (cosmology)","level":3,"score":0.42421072721481323},{"id":"https://openalex.org/C13672336","wikidata":"https://www.wikidata.org/wiki/Q3460803","display_name":"Bag-of-words model","level":2,"score":0.410597026348114},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3137742877006531},{"id":"https://openalex.org/C52622490","wikidata":"https://www.wikidata.org/wiki/Q1026626","display_name":"Feature extraction","level":2,"score":0.26557791233062744},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.21567675471305847},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.20808085799217224},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"pmh:oai:upcommons.upc.edu:2099.1/22390","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2099.1/22390","pdf_url":"http://hdl.handle.net/2099.1/22390","source":{"id":"https://openalex.org/S4377196262","display_name":"UPCommons institutional repository (Universitat Polit\u00e8cnica de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I9617848","host_organization_name":"Universitat Polit\u00e8cnica de Catalunya","host_organization_lineage":["https://openalex.org/I9617848"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/bachelorThesis"},{"id":"pmh:oai:recercat.cat:2072/239383","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2099.1/22390","pdf_url":null,"source":{"id":"https://openalex.org/S4306402147","display_name":"RECERCAT (Consorci de Serveis Universitaris de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210090028","host_organization_name":"Consorci de Serveis Universitaris de Catalunya","host_organization_lineage":["https://openalex.org/I4210090028"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/bachelorThesis"},{"id":"mag:133366681","doi":null,"is_oa":false,"landing_page_url":"https://upcommons.upc.edu/bitstream/2099.1/22390/4/Marcel_Tella_Thesis.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:upcommons.upc.edu:2099.1/22390","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/2099.1/22390","pdf_url":"http://hdl.handle.net/2099.1/22390","source":{"id":"https://openalex.org/S4377196262","display_name":"UPCommons institutional repository (Universitat Polit\u00e8cnica de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I9617848","host_organization_name":"Universitat Polit\u00e8cnica de Catalunya","host_organization_lineage":["https://openalex.org/I9617848"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/bachelorThesis"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W133366681.pdf","grobid_xml":"https://content.openalex.org/works/W133366681.grobid-xml"},"referenced_works_count":14,"referenced_works":["https://openalex.org/W78159342","https://openalex.org/W1991367009","https://openalex.org/W1992947187","https://openalex.org/W2011380382","https://openalex.org/W2017691720","https://openalex.org/W2057175746","https://openalex.org/W2094707096","https://openalex.org/W2096278404","https://openalex.org/W2118132750","https://openalex.org/W2151103935","https://openalex.org/W2162915993","https://openalex.org/W2164842737","https://openalex.org/W2169551590","https://openalex.org/W2997169974"],"related_works":["https://openalex.org/W2139199291","https://openalex.org/W2939423246","https://openalex.org/W1594194724","https://openalex.org/W2141482726","https://openalex.org/W2056313036","https://openalex.org/W1572399308","https://openalex.org/W2107555160","https://openalex.org/W2172006651","https://openalex.org/W7097971812","https://openalex.org/W4396775473"],"abstract_inverted_index":{"Currently,":[0],"there":[1],"are":[2,147,163],"highly":[3],"competitive":[4],"results":[5,222],"in":[6,112,223],"the":[7,14,33,41,47,56,59,79,128,150,155,166,171,191,195,199,208,214],"field":[8],"of":[9,16,32,81,103,127,174,213,216,231],"object":[10,48],"recognition":[11],"based":[12],"on":[13,198],"aggregation":[15,24],"point-based":[17,52],"features":[18,34,53,140,197,206],"[4,":[19],"26,":[20],"5,":[21],"6].":[22],"The":[23,50,124],"process,":[25],"typically":[26,54],"with":[27,61,141,158,218],"an":[28,107],"average":[29],"or":[30,43],"max-pooling":[31],"generates":[35],"a":[36,180,186,219,228],"single":[37,187],"vector":[38],"that":[39,45,204],"represents":[40],"image":[42],"region":[44],"contains":[46],"[7].":[49],"aggregated":[51],"describe":[55],"texture":[57],"around":[58],"points":[60],"descriptors":[62,67,89,157],"such":[63],"as":[64,185],"SIFT.":[65],"These":[66],"present":[68],"limitations":[69],"for":[70,227],"wired":[71],"and":[72,98,138,178,194,235],"textureless":[73],"objects.":[74,104],"A":[75],"possible":[76],"solution":[77],"is":[78,110,131],"addition":[80],"shape-based":[82,142,220],"information.":[83],"[9,":[84],"6,":[85],"2,":[86],"12].":[87],"Shape":[88],"have":[90],"been":[91],"previously":[92],"used":[93],"to":[94,114,121,135,153,169,240],"encode":[95],"shape":[96,120,159,181,205,232],"information":[97,160],"thus,":[99],"recognise":[100],"those":[101],"types":[102],"But":[105],"generally":[106],"alignment":[108],"step":[109],"required":[111],"order":[113],"match":[115],"every":[116],"point":[117],"from":[118],"one":[119,151],"other":[122,167],"ones.":[123,143],"computational":[125],"cost":[126],"similarity":[129],"assessment":[130],"high.":[132],"We":[133,189],"purpose":[134],"enrich":[136,154],"location":[137],"texture-based":[139],"Two":[144],"main":[145],"architectures":[146,238],"explored:":[148],"On":[149,165],"side,":[152,168],"SIFT":[156,237],"before":[161],"they":[162],"aggregated.":[164],"create":[170],"standard":[172],"Bag":[173,215],"Words":[175,217],"[7]":[176],"histogram":[177],"concatenate":[179],"histogram,":[182],"classifying":[183],"them":[184],"vector.":[188],"evaluate":[190],"proposed":[192],"techniques":[193],"novel":[196],"Caltech-101":[200],"dataset.":[201],"Results":[202],"show":[203],"increase":[207],"final":[209],"performance.":[210,225],"Our":[211],"extension":[212],"histogram(BoW+S)":[221],"better":[224],"However,":[226],"high":[229],"number":[230],"features,":[233],"BoW+S":[234],"enriched":[236],"tend":[239],"converge.":[241]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}