{"id":"https://openalex.org/W2992921830","doi":"https://doi.org/10.1109/access.2019.2957034","title":"Object-Level Segmentation of Indoor Point Clouds by the Convexity of Adjacent Object Regions","display_name":"Object-Level Segmentation of Indoor Point Clouds by the Convexity of Adjacent Object Regions","publication_year":2019,"publication_date":"2019-01-01","ids":{"openalex":"https://openalex.org/W2992921830","doi":"https://doi.org/10.1109/access.2019.2957034","mag":"2992921830"},"language":"en","primary_location":{"id":"doi:10.1109/access.2019.2957034","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2957034","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/access.2019.2957034","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5021268403","display_name":"Nan Luo","orcid":"https://orcid.org/0000-0002-9619-9880"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Nan Luo","raw_affiliation_strings":["School of Computer Science and Technology, Xidian University, Xi\u2019an, China","ORCiD","School of Computer Science and Technology, Xidian University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0002-9619-9880","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]},{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100418247","display_name":"Quan Wang","orcid":"https://orcid.org/0000-0001-6913-8604"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Quan Wang","raw_affiliation_strings":["School of Computer Science and Technology, Xidian University, Xi\u2019an, China","School of Computer Science and Technology, Xidian University, Xi’an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083905079","display_name":"Qi Wei","orcid":"https://orcid.org/0000-0002-2326-0601"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qi Wei","raw_affiliation_strings":["School of Computer Science and Technology, Xidian University, Xi\u2019an, China","School of Computer Science and Technology, Xidian University, Xi’an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008530746","display_name":"Chuan Jing","orcid":null},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chuan Jing","raw_affiliation_strings":["School of Computer Science and Technology, Xidian University, Xi\u2019an, China","School of Computer Science and Technology, Xidian University, Xi’an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"School of Computer Science and Technology, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I149594827"],"apc_list":{"value":1850,"currency":"USD","value_usd":1850},"apc_paid":{"value":1850,"currency":"USD","value_usd":1850},"fwci":0.2808,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.53180811,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"7","issue":null,"first_page":"171934","last_page":"171949"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11211","display_name":"3D Surveying and Cultural Heritage","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1907","display_name":"Geology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10719","display_name":"3D Shape Modeling and Analysis","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/point-cloud","display_name":"Point cloud","score":0.8020684719085693},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7934074997901917},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.7815076112747192},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.774208664894104},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6341579556465149},{"id":"https://openalex.org/keywords/segmentation-based-object-categorization","display_name":"Segmentation-based object categorization","score":0.5485587120056152},{"id":"https://openalex.org/keywords/merge","display_name":"Merge (version control)","score":0.5481812953948975},{"id":"https://openalex.org/keywords/image-segmentation","display_name":"Image segmentation","score":0.5388900637626648},{"id":"https://openalex.org/keywords/object","display_name":"Object (grammar)","score":0.5363460779190063},{"id":"https://openalex.org/keywords/scale-space-segmentation","display_name":"Scale-space segmentation","score":0.5000464916229248},{"id":"https://openalex.org/keywords/cluster-analysis","display_name":"Cluster analysis","score":0.4492189586162567},{"id":"https://openalex.org/keywords/region-growing","display_name":"Region growing","score":0.43875324726104736},{"id":"https://openalex.org/keywords/convexity","display_name":"Convexity","score":0.42497286200523376},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.4141135513782501}],"concepts":[{"id":"https://openalex.org/C131979681","wikidata":"https://www.wikidata.org/wiki/Q1899648","display_name":"Point cloud","level":2,"score":0.8020684719085693},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7934074997901917},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.7815076112747192},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.774208664894104},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6341579556465149},{"id":"https://openalex.org/C25694479","wikidata":"https://www.wikidata.org/wiki/Q7446278","display_name":"Segmentation-based object categorization","level":5,"score":0.5485587120056152},{"id":"https://openalex.org/C197129107","wikidata":"https://www.wikidata.org/wiki/Q1921621","display_name":"Merge (version control)","level":2,"score":0.5481812953948975},{"id":"https://openalex.org/C124504099","wikidata":"https://www.wikidata.org/wiki/Q56933","display_name":"Image segmentation","level":3,"score":0.5388900637626648},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.5363460779190063},{"id":"https://openalex.org/C65885262","wikidata":"https://www.wikidata.org/wiki/Q7429708","display_name":"Scale-space segmentation","level":4,"score":0.5000464916229248},{"id":"https://openalex.org/C73555534","wikidata":"https://www.wikidata.org/wiki/Q622825","display_name":"Cluster analysis","level":2,"score":0.4492189586162567},{"id":"https://openalex.org/C206824153","wikidata":"https://www.wikidata.org/wiki/Q1169834","display_name":"Region growing","level":5,"score":0.43875324726104736},{"id":"https://openalex.org/C72134830","wikidata":"https://www.wikidata.org/wiki/Q5166524","display_name":"Convexity","level":2,"score":0.42497286200523376},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.4141135513782501},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.0},{"id":"https://openalex.org/C106159729","wikidata":"https://www.wikidata.org/wiki/Q2294553","display_name":"Financial economics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/access.2019.2957034","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2957034","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:7c95b14101984a85ba75ffffa9685c4f","is_oa":true,"landing_page_url":"https://doaj.org/article/7c95b14101984a85ba75ffffa9685c4f","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Access, Vol 7, Pp 171934-171949 (2019)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/access.2019.2957034","is_oa":true,"landing_page_url":"https://doi.org/10.1109/access.2019.2957034","pdf_url":null,"source":{"id":"https://openalex.org/S2485537415","display_name":"IEEE Access","issn_l":"2169-3536","issn":["2169-3536"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Access","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1124326359","display_name":null,"funder_award_id":"2018M633472","funder_id":"https://openalex.org/F4320321543","funder_display_name":"China Postdoctoral Science Foundation"},{"id":"https://openalex.org/G1166193582","display_name":"\u5d4c\u5165\u5f0f\u5f02\u6784\u8ba1\u7b97\u96c6\u7fa4\u9ad8\u53ef\u9760\u9ad8\u6027\u80fd\u7ba1\u7406\u8c03\u5ea6\u7814\u7a76","funder_award_id":"61972302","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G510624212","display_name":null,"funder_award_id":"XJS18034","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G6475119243","display_name":null,"funder_award_id":"61702400","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8253331204","display_name":null,"funder_award_id":"61802294","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321543","display_name":"China Postdoctoral Science Foundation","ror":"https://ror.org/0426zh255"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":47,"referenced_works":["https://openalex.org/W125693051","https://openalex.org/W597714622","https://openalex.org/W832272354","https://openalex.org/W1577931413","https://openalex.org/W1637459849","https://openalex.org/W1643817907","https://openalex.org/W1920022804","https://openalex.org/W1953319329","https://openalex.org/W1970531977","https://openalex.org/W1972630525","https://openalex.org/W1985880384","https://openalex.org/W1994699846","https://openalex.org/W1995628331","https://openalex.org/W1996688648","https://openalex.org/W2003838372","https://openalex.org/W2041642242","https://openalex.org/W2045044142","https://openalex.org/W2074658631","https://openalex.org/W2077263423","https://openalex.org/W2089036831","https://openalex.org/W2100612103","https://openalex.org/W2127911825","https://openalex.org/W2135249503","https://openalex.org/W2151837863","https://openalex.org/W2175918839","https://openalex.org/W2277007198","https://openalex.org/W2320788478","https://openalex.org/W2512257441","https://openalex.org/W2560609797","https://openalex.org/W2609077090","https://openalex.org/W2609719703","https://openalex.org/W2751849977","https://openalex.org/W2772815378","https://openalex.org/W2788158258","https://openalex.org/W2793918225","https://openalex.org/W2804872164","https://openalex.org/W2962928871","https://openalex.org/W2963121255","https://openalex.org/W2963517242","https://openalex.org/W4235587621","https://openalex.org/W6605121731","https://openalex.org/W6636617412","https://openalex.org/W6640300118","https://openalex.org/W6651236541","https://openalex.org/W6669885998","https://openalex.org/W6679152795","https://openalex.org/W6739778489"],"related_works":["https://openalex.org/W2394279717","https://openalex.org/W2364730859","https://openalex.org/W1978085585","https://openalex.org/W3144569342","https://openalex.org/W2386644571","https://openalex.org/W2551987074","https://openalex.org/W2372421320","https://openalex.org/W2185902295","https://openalex.org/W2531745538","https://openalex.org/W2353364291"],"abstract_inverted_index":{"The":[0,67],"issue":[1],"of":[2,34,58,64,72,116,128,135],"achieving":[3],"an":[4,52],"appropriate":[5],"segmentation":[6,57],"for":[7,55],"indoor":[8,59],"point":[9,60,74],"cloud":[10],"scenes":[11],"remains":[12],"difficult.":[13],"Although":[14],"available":[15],"methods":[16],"continue":[17],"to":[18,26,29,45,84,124,144,152],"improve":[19],"the":[20,32,43,46,56,80,104,126,133,140],"benchmark":[21],"performance,":[22],"more":[23],"attentions":[24],"need":[25],"be":[27],"paid":[28],"deal":[30],"with":[31,166],"drawbacks":[33],"inaccurate":[35],"or":[36],"incomplete":[37],"segments":[38],"in":[39,79,103],"division.":[40],"To":[41],"push":[42],"research":[44],"next":[47],"level,":[48],"this":[49,95],"work":[50],"proposes":[51],"learning-free":[53],"algorithm":[54,149],"clouds":[61,75],"which":[62,88],"consists":[63],"two":[65],"stages.":[66],"first":[68],"stage":[69],"extracts":[70],"edges":[71],"RGBD":[73],"and":[76,138,154,169],"applies":[77],"them":[78],"voxel":[81],"clustering":[82],"process":[83],"avoid":[85],"generating":[86],"supervoxels":[87,165],"are":[89],"situated":[90],"across":[91],"object":[92,136],"boundaries.":[93],"After":[94],"pre-segmentation,":[96],"a":[97,114],"two-phase":[98],"merging":[99],"procedure":[100],"is":[101,119,150],"presented":[102],"second":[105],"part.":[106],"By":[107],"conducting":[108],"region":[109],"growing":[110],"on":[111,132],"optimized":[112],"supervoxels,":[113],"set":[115],"local":[117],"regions":[118,130,143],"obtained.":[120],"Then":[121],"we":[122],"propose":[123],"define":[125],"convexity-concavity":[127],"adjacent":[129],"based":[131],"observations":[134],"structures":[137],"merge":[139],"convexly":[141],"connected":[142],"achieve":[145],"object-level":[146,173],"segmentation.":[147,174],"This":[148],"straightforward":[151],"implement":[153],"requires":[155],"no":[156],"training":[157],"data.":[158],"Experimental":[159],"results":[160],"show":[161],"that":[162],"it":[163],"produces":[164],"plausible":[167],"boundaries":[168],"arrives":[170],"at":[171],"better":[172]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":2}],"updated_date":"2026-07-25T09:21:30.201066","created_date":"2025-10-10T00:00:00"}