{"id":"https://openalex.org/W2154683974","doi":"https://doi.org/10.1145/1282280.1282340","title":"Representing shape with a spatial pyramid kernel","display_name":"Representing shape with a spatial pyramid kernel","publication_year":2007,"publication_date":"2007-07-09","ids":{"openalex":"https://openalex.org/W2154683974","doi":"https://doi.org/10.1145/1282280.1282340","mag":"2154683974"},"language":"en","primary_location":{"id":"doi:10.1145/1282280.1282340","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1282280.1282340","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 international conference on Image and video 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/A5110599847","display_name":"Anna Bosch","orcid":null},"institutions":[{"id":"https://openalex.org/I251424209","display_name":"Universitat de Girona","ror":"https://ror.org/01xdxns91","country_code":"ES","type":"education","lineage":["https://openalex.org/I251424209"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Anna Bosch","raw_affiliation_strings":["University of Girona, Girona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Girona, Girona, Spain","institution_ids":["https://openalex.org/I251424209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057678172","display_name":"Andrew Zisserman","orcid":"https://orcid.org/0000-0002-8945-8573"},"institutions":[{"id":"https://openalex.org/I40120149","display_name":"University of Oxford","ror":"https://ror.org/052gg0110","country_code":"GB","type":"education","lineage":["https://openalex.org/I40120149"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Andrew Zisserman","raw_affiliation_strings":["University of Oxford, Oxford, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Oxford, Oxford, UK","institution_ids":["https://openalex.org/I40120149"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021517959","display_name":"Xavier Mu\u00f1oz","orcid":"https://orcid.org/0000-0002-2560-3540"},"institutions":[{"id":"https://openalex.org/I251424209","display_name":"Universitat de Girona","ror":"https://ror.org/01xdxns91","country_code":"ES","type":"education","lineage":["https://openalex.org/I251424209"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Xavier Munoz","raw_affiliation_strings":["University of Girona, Girona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Girona, Girona, Spain","institution_ids":["https://openalex.org/I251424209"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":48.967,"has_fulltext":false,"cited_by_count":1402,"citation_normalized_percentile":{"value":0.99983177,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":98,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"401","last_page":"408"},"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":0.9990000128746033,"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":0.9990000128746033,"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":0.9937000274658203,"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/T10191","display_name":"Robotics and Sensor-Based Localization","score":0.9860000014305115,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.8334080576896667},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.7532944083213806},{"id":"https://openalex.org/keywords/weighting","display_name":"Weighting","score":0.6859884858131409},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.6396797895431519},{"id":"https://openalex.org/keywords/pyramid","display_name":"Pyramid (geometry)","score":0.6356916427612305},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6071405410766602},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5246686935424805},{"id":"https://openalex.org/keywords/object","display_name":"Object (grammar)","score":0.5003106594085693},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.4717462956905365},{"id":"https://openalex.org/keywords/novelty","display_name":"Novelty","score":0.445789635181427},{"id":"https://openalex.org/keywords/heat-kernel-signature","display_name":"Heat kernel signature","score":0.44567960500717163},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3649917244911194},{"id":"https://openalex.org/keywords/active-shape-model","display_name":"Active shape model","score":0.10686886310577393},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.08463779091835022},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.06583747267723083}],"concepts":[{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.8334080576896667},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7532944083213806},{"id":"https://openalex.org/C183115368","wikidata":"https://www.wikidata.org/wiki/Q856577","display_name":"Weighting","level":2,"score":0.6859884858131409},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.6396797895431519},{"id":"https://openalex.org/C142575187","wikidata":"https://www.wikidata.org/wiki/Q3358290","display_name":"Pyramid (geometry)","level":2,"score":0.6356916427612305},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6071405410766602},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5246686935424805},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.5003106594085693},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.4717462956905365},{"id":"https://openalex.org/C2778738651","wikidata":"https://www.wikidata.org/wiki/Q16546687","display_name":"Novelty","level":2,"score":0.445789635181427},{"id":"https://openalex.org/C45089102","wikidata":"https://www.wikidata.org/wiki/Q5693286","display_name":"Heat kernel signature","level":4,"score":0.44567960500717163},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3649917244911194},{"id":"https://openalex.org/C129641003","wikidata":"https://www.wikidata.org/wiki/Q267189","display_name":"Active shape model","level":3,"score":0.10686886310577393},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.08463779091835022},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.06583747267723083},{"id":"https://openalex.org/C27206212","wikidata":"https://www.wikidata.org/wiki/Q34178","display_name":"Theology","level":1,"score":0.0},{"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/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/1282280.1282340","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1282280.1282340","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 international conference on Image and video retrieval","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Life below water","score":0.550000011920929,"id":"https://metadata.un.org/sdg/14"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320320005","display_name":"Royal Academy of Engineering","ror":"https://ror.org/0526snb40"},{"id":"https://openalex.org/F4320321837","display_name":"Ministerio de Econom\u00eda y Competitividad","ror":"https://ror.org/034900433"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W1546934144","https://openalex.org/W1576213419","https://openalex.org/W1589362500","https://openalex.org/W1625255723","https://openalex.org/W1866452454","https://openalex.org/W2031823405","https://openalex.org/W2073152679","https://openalex.org/W2081362370","https://openalex.org/W2089181482","https://openalex.org/W2096349671","https://openalex.org/W2097543505","https://openalex.org/W2102680763","https://openalex.org/W2104825706","https://openalex.org/W2104978738","https://openalex.org/W2105464770","https://openalex.org/W2112020727","https://openalex.org/W2118330267","https://openalex.org/W2123602281","https://openalex.org/W2125489247","https://openalex.org/W2129814234","https://openalex.org/W2135735112","https://openalex.org/W2151103935","https://openalex.org/W2153635508","https://openalex.org/W2155904486","https://openalex.org/W2160429500","https://openalex.org/W2161969291","https://openalex.org/W2162915993","https://openalex.org/W2165828254","https://openalex.org/W3120421331"],"related_works":["https://openalex.org/W2381242807","https://openalex.org/W2751208925","https://openalex.org/W2347541121","https://openalex.org/W4288804799","https://openalex.org/W3089617106","https://openalex.org/W3032237421","https://openalex.org/W2080951048","https://openalex.org/W3011883280","https://openalex.org/W1508039347","https://openalex.org/W2154683974"],"abstract_inverted_index":{"The":[0],"objective":[1],"of":[2,23],"this":[3],"paper":[4],"is":[5],"classifying":[6],"images":[7,55],"by":[8,59,102],"the":[9,50,60,66,71],"object":[10],"categories":[11],"they":[12],"contain,":[13],"for":[14],"example":[15],"motorbikes":[16],"or":[17],"dolphins.":[18],"There":[19],"are":[20,46],"three":[21],"areas":[22],"novelty.":[24],"First,":[25],"we":[26,69,91],"introduce":[27],"a":[28,41,82,106],"descriptor":[29],"that":[30,49,93],"represents":[31],"local":[32],"image":[33],"shape":[34,51,94],"and":[35,75,95],"its":[36,77],"spatial":[37,42,72],"layout,":[38],"together":[39],"with":[40],"pyramid":[43,73],"kernel.":[44,67],"These":[45],"designed":[47],"so":[48],"correspondence":[52],"between":[53,62],"two":[54],"can":[56],"be":[57,99],"measured":[58],"distance":[61],"their":[63],"descriptors":[64],"using":[65],"Second,":[68],"generalize":[70],"kernel,":[74],"learn":[76],"level":[78],"weighting":[79],"parameters":[80,104],"(on":[81],"validation":[83,107],"set).":[84,108],"This":[85],"significantly":[86],"improves":[87],"classification":[88],"performance.":[89],"Third,":[90],"show":[92],"appearance":[96],"kernels":[97],"may":[98],"combined":[100],"(again":[101],"learning":[103],"on":[105]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":10},{"year":2024,"cited_by_count":11},{"year":2023,"cited_by_count":32},{"year":2022,"cited_by_count":53},{"year":2021,"cited_by_count":40},{"year":2020,"cited_by_count":65},{"year":2019,"cited_by_count":69},{"year":2018,"cited_by_count":80},{"year":2017,"cited_by_count":98},{"year":2016,"cited_by_count":114},{"year":2015,"cited_by_count":135},{"year":2014,"cited_by_count":136},{"year":2013,"cited_by_count":132},{"year":2012,"cited_by_count":118}],"updated_date":"2026-08-13T07:04:57.449891","created_date":"2025-10-10T00:00:00"}
