{"id":"https://openalex.org/W2081022353","doi":"https://doi.org/10.1016/0262-8856(87)90006-0","title":"Algorithm for converting a forest of quadtrees to a binary array","display_name":"Algorithm for converting a forest of quadtrees to a binary array","publication_year":1987,"publication_date":"1987-11-01","ids":{"openalex":"https://openalex.org/W2081022353","doi":"https://doi.org/10.1016/0262-8856(87)90006-0","mag":"2081022353"},"language":"en","primary_location":{"id":"doi:10.1016/0262-8856(87)90006-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0262-8856(87)90006-0","pdf_url":null,"source":{"id":"https://openalex.org/S177430994","display_name":"Image and Vision Computing","issn_l":"0262-8856","issn":["0262-8856","1872-8138"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Image and Vision Computing","raw_type":"journal-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/A5000653664","display_name":"Somasundaram Ravindran","orcid":null},"institutions":[{"id":"https://openalex.org/I1289461252","display_name":"Indian Space Research Organisation","ror":"https://ror.org/00cwrns71","country_code":"IN","type":"government","lineage":["https://openalex.org/I1289461252","https://openalex.org/I3148377317"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"S Ravindran","raw_affiliation_strings":["SROSS Project, ISRO Satellite Center, Bangalore 560 017, India"],"affiliations":[{"raw_affiliation_string":"SROSS Project, ISRO Satellite Center, Bangalore 560 017, India","institution_ids":["https://openalex.org/I1289461252"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108063116","display_name":"M. Manohar","orcid":"https://orcid.org/0009-0003-1038-8846"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M Manohar","raw_affiliation_strings":["Space and Data Computing Division, GSFC/NASA, Greenbelt, MD 20771, USA"],"affiliations":[{"raw_affiliation_string":"Space and Data Computing Division, GSFC/NASA, Greenbelt, MD 20771, USA","institution_ids":["https://openalex.org/I1306266525"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5000653664"],"corresponding_institution_ids":["https://openalex.org/I1289461252"],"apc_list":{"value":2270,"currency":"USD","value_usd":2270},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.2187264,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"5","issue":"4","first_page":"297","last_page":"300"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12923","display_name":"Digital Image Processing Techniques","score":0.9987999796867371,"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/T12923","display_name":"Digital Image Processing Techniques","score":0.9987999796867371,"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/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9977999925613403,"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/T11269","display_name":"Algorithms and Data Compression","score":0.9973000288009644,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/quadtree","display_name":"Quadtree","score":0.8977447748184204},{"id":"https://openalex.org/keywords/binary-tree","display_name":"Binary tree","score":0.6772059798240662},{"id":"https://openalex.org/keywords/binary-number","display_name":"Binary number","score":0.6611295938491821},{"id":"https://openalex.org/keywords/node","display_name":"Node (physics)","score":0.5551914572715759},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.529340386390686},{"id":"https://openalex.org/keywords/pixel","display_name":"Pixel","score":0.5276927947998047},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5193739533424377},{"id":"https://openalex.org/keywords/domain","display_name":"Domain (mathematical analysis)","score":0.519015908241272},{"id":"https://openalex.org/keywords/preorder","display_name":"Preorder","score":0.4978067874908447},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.4883005619049072},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.46128860116004944},{"id":"https://openalex.org/keywords/binary-logarithm","display_name":"Binary logarithm","score":0.4108119010925293},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3402406871318817},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.27576544880867004},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2410702407360077},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.1610436737537384},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.10455024242401123},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06432658433914185}],"concepts":[{"id":"https://openalex.org/C151416825","wikidata":"https://www.wikidata.org/wiki/Q934791","display_name":"Quadtree","level":2,"score":0.8977447748184204},{"id":"https://openalex.org/C197855036","wikidata":"https://www.wikidata.org/wiki/Q380172","display_name":"Binary tree","level":2,"score":0.6772059798240662},{"id":"https://openalex.org/C48372109","wikidata":"https://www.wikidata.org/wiki/Q3913","display_name":"Binary number","level":2,"score":0.6611295938491821},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.5551914572715759},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.529340386390686},{"id":"https://openalex.org/C160633673","wikidata":"https://www.wikidata.org/wiki/Q355198","display_name":"Pixel","level":2,"score":0.5276927947998047},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5193739533424377},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.519015908241272},{"id":"https://openalex.org/C2333172","wikidata":"https://www.wikidata.org/wiki/Q1425985","display_name":"Preorder","level":2,"score":0.4978067874908447},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.4883005619049072},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.46128860116004944},{"id":"https://openalex.org/C63553672","wikidata":"https://www.wikidata.org/wiki/Q581168","display_name":"Binary logarithm","level":2,"score":0.4108119010925293},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3402406871318817},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.27576544880867004},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2410702407360077},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.1610436737537384},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.10455024242401123},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06432658433914185},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","level":2,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0262-8856(87)90006-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0262-8856(87)90006-0","pdf_url":null,"source":{"id":"https://openalex.org/S177430994","display_name":"Image and Vision Computing","issn_l":"0262-8856","issn":["0262-8856","1872-8138"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Image and Vision Computing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6499999761581421,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W1971169979","https://openalex.org/W2000288754","https://openalex.org/W2008196645","https://openalex.org/W2018251789","https://openalex.org/W2028163723","https://openalex.org/W2049113041","https://openalex.org/W2050576295","https://openalex.org/W2169893912","https://openalex.org/W6662840282"],"related_works":["https://openalex.org/W2788331025","https://openalex.org/W2363499416","https://openalex.org/W2357738827","https://openalex.org/W2090123015","https://openalex.org/W151008969","https://openalex.org/W2367083125","https://openalex.org/W2032798435","https://openalex.org/W2392144760","https://openalex.org/W3176456339","https://openalex.org/W2359535794"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
