{"id":"https://openalex.org/W2070723305","doi":"https://doi.org/10.1016/0734-189x(89)90087-x","title":"On the intersection of a set of direction cones","display_name":"On the intersection of a set of direction cones","publication_year":1989,"publication_date":"1989-03-01","ids":{"openalex":"https://openalex.org/W2070723305","doi":"https://doi.org/10.1016/0734-189x(89)90087-x","mag":"2070723305"},"language":"en","primary_location":{"id":"doi:10.1016/0734-189x(89)90087-x","is_oa":true,"landing_page_url":"https://doi.org/10.1016/0734-189x(89)90087-x","pdf_url":"https://www.sciencedirect.com/science/article/pii/0734189X8990087X","source":{"id":"https://openalex.org/S4210212310","display_name":"Computer Vision Graphics and Image Processing","issn_l":"0734-189X","issn":["0734-189X","1557-895X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319955","host_organization_name":"Academic Press","host_organization_lineage":["https://openalex.org/P4310319955","https://openalex.org/P4310320990"],"host_organization_lineage_names":["Academic Press","Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computer Vision, Graphics, and Image Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.sciencedirect.com/science/article/pii/0734189X8990087X","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5067743569","display_name":"Kai Tang","orcid":"https://orcid.org/0000-0002-5184-2086"},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan\u2013Ann Arbor","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Kai Tang","raw_affiliation_strings":["University of Michigan, EECS Department, Ann Arbor, Michigan 48109, USA"],"affiliations":[{"raw_affiliation_string":"University of Michigan, EECS Department, Ann Arbor, Michigan 48109, USA","institution_ids":["https://openalex.org/I27837315"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5067743569"],"corresponding_institution_ids":["https://openalex.org/I27837315"],"apc_list":null,"apc_paid":null,"fwci":0.2509,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.59498956,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"45","issue":"3","first_page":"357","last_page":"361"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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/T12176","display_name":"Optimization and Packing Problems","score":0.9900000095367432,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12549","display_name":"Image and Object Detection Techniques","score":0.9623000025749207,"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/polyhedron","display_name":"Polyhedron","score":0.7658870816230774},{"id":"https://openalex.org/keywords/intersection","display_name":"Intersection (aeronautics)","score":0.7185595035552979},{"id":"https://openalex.org/keywords/congruence","display_name":"Congruence (geometry)","score":0.7153187394142151},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.7118411064147949},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.6651248931884766},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5492159128189087},{"id":"https://openalex.org/keywords/window","display_name":"Window (computing)","score":0.49274542927742004},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4893933832645416},{"id":"https://openalex.org/keywords/convex-polytope","display_name":"Convex polytope","score":0.45338475704193115},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.28219252824783325},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.24438008666038513},{"id":"https://openalex.org/keywords/convex-set","display_name":"Convex set","score":0.2298544943332672},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.0683489441871643},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.06463050842285156}],"concepts":[{"id":"https://openalex.org/C54829058","wikidata":"https://www.wikidata.org/wiki/Q172937","display_name":"Polyhedron","level":2,"score":0.7658870816230774},{"id":"https://openalex.org/C64543145","wikidata":"https://www.wikidata.org/wiki/Q162942","display_name":"Intersection (aeronautics)","level":2,"score":0.7185595035552979},{"id":"https://openalex.org/C132074034","wikidata":"https://www.wikidata.org/wiki/Q154210","display_name":"Congruence (geometry)","level":2,"score":0.7153187394142151},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.7118411064147949},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.6651248931884766},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5492159128189087},{"id":"https://openalex.org/C2778751112","wikidata":"https://www.wikidata.org/wiki/Q835016","display_name":"Window (computing)","level":2,"score":0.49274542927742004},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4893933832645416},{"id":"https://openalex.org/C110943637","wikidata":"https://www.wikidata.org/wiki/Q4129097","display_name":"Convex polytope","level":5,"score":0.45338475704193115},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.28219252824783325},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.24438008666038513},{"id":"https://openalex.org/C49870271","wikidata":"https://www.wikidata.org/wiki/Q193657","display_name":"Convex set","level":4,"score":0.2298544943332672},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.0683489441871643},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.06463050842285156},{"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/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","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}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1016/0734-189x(89)90087-x","is_oa":true,"landing_page_url":"https://doi.org/10.1016/0734-189x(89)90087-x","pdf_url":"https://www.sciencedirect.com/science/article/pii/0734189X8990087X","source":{"id":"https://openalex.org/S4210212310","display_name":"Computer Vision Graphics and Image Processing","issn_l":"0734-189X","issn":["0734-189X","1557-895X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319955","host_organization_name":"Academic Press","host_organization_lineage":["https://openalex.org/P4310319955","https://openalex.org/P4310320990"],"host_organization_lineage_names":["Academic Press","Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computer Vision, Graphics, and Image Processing","raw_type":"journal-article"},{"id":"pmh:oai:deepblue.lib.umich.edu:2027.42/28037","is_oa":true,"landing_page_url":"http://hdl.handle.net/2027.42/28037>","pdf_url":"https://hdl.handle.net/2027.42/28037","source":{"id":"https://openalex.org/S4306400393","display_name":"Deep Blue (University of Michigan)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I27837315","host_organization_name":"University of Michigan","host_organization_lineage":["https://openalex.org/I27837315"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},{"id":"pmh:oai:repository.hkust.edu.hk:1783.1-156384","is_oa":false,"landing_page_url":"http://repository.hkust.edu.hk/ir/Record/1783.1-156384","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"}],"best_oa_location":{"id":"doi:10.1016/0734-189x(89)90087-x","is_oa":true,"landing_page_url":"https://doi.org/10.1016/0734-189x(89)90087-x","pdf_url":"https://www.sciencedirect.com/science/article/pii/0734189X8990087X","source":{"id":"https://openalex.org/S4210212310","display_name":"Computer Vision Graphics and Image Processing","issn_l":"0734-189X","issn":["0734-189X","1557-895X"],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319955","host_organization_name":"Academic Press","host_organization_lineage":["https://openalex.org/P4310319955","https://openalex.org/P4310320990"],"host_organization_lineage_names":["Academic Press","Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computer Vision, Graphics, and Image Processing","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11","score":0.6200000047683716}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2070723305.pdf","grobid_xml":"https://content.openalex.org/works/W2070723305.grobid-xml"},"referenced_works_count":4,"referenced_works":["https://openalex.org/W1481903970","https://openalex.org/W1987647724","https://openalex.org/W4230101685","https://openalex.org/W6628666476"],"related_works":["https://openalex.org/W4248823117","https://openalex.org/W2004058166","https://openalex.org/W2030718493","https://openalex.org/W2103429114","https://openalex.org/W2018708907","https://openalex.org/W2005538657","https://openalex.org/W1584292662","https://openalex.org/W2088151573","https://openalex.org/W2004897847","https://openalex.org/W4385474329"],"abstract_inverted_index":null,"counts_by_year":[{"year":2016,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
