{"id":"https://openalex.org/W2042165300","doi":"https://doi.org/10.1109/conielecomp.2014.6808563","title":"Image enhancement using Bi-Histogram Equalization with adaptive sigmoid functions","display_name":"Image enhancement using Bi-Histogram Equalization with adaptive sigmoid functions","publication_year":2014,"publication_date":"2014-02-01","ids":{"openalex":"https://openalex.org/W2042165300","doi":"https://doi.org/10.1109/conielecomp.2014.6808563","mag":"2042165300"},"language":"en","primary_location":{"id":"doi:10.1109/conielecomp.2014.6808563","is_oa":false,"landing_page_url":"https://doi.org/10.1109/conielecomp.2014.6808563","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 International Conference on Electronics, Communications and Computers (CONIELECOMP)","raw_type":"proceedings-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/A5039444534","display_name":"Edgar F. Arriaga-Garcia","orcid":null},"institutions":[{"id":"https://openalex.org/I129858807","display_name":"Universidad de Guanajuato","ror":"https://ror.org/058cjye32","country_code":"MX","type":"education","lineage":["https://openalex.org/I129858807"]}],"countries":["MX"],"is_corresponding":true,"raw_author_name":"Edgar F. Arriaga-Garcia","raw_affiliation_strings":["Electronics Engineering Department, Universidad de Guanajuato DICIS","DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico"],"affiliations":[{"raw_affiliation_string":"Electronics Engineering Department, Universidad de Guanajuato DICIS","institution_ids":["https://openalex.org/I129858807"]},{"raw_affiliation_string":"DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico","institution_ids":["https://openalex.org/I129858807"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057863052","display_name":"Ra\u00fal E. S\u00e1nchez-Y\u00e1\u00f1ez","orcid":"https://orcid.org/0000-0002-5431-6954"},"institutions":[{"id":"https://openalex.org/I129858807","display_name":"Universidad de Guanajuato","ror":"https://ror.org/058cjye32","country_code":"MX","type":"education","lineage":["https://openalex.org/I129858807"]}],"countries":["MX"],"is_corresponding":false,"raw_author_name":"Raul E. Sanchez-Yanez","raw_affiliation_strings":["Electronics Engineering Department, Universidad de Guanajuato DICIS","DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico"],"affiliations":[{"raw_affiliation_string":"Electronics Engineering Department, Universidad de Guanajuato DICIS","institution_ids":["https://openalex.org/I129858807"]},{"raw_affiliation_string":"DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico","institution_ids":["https://openalex.org/I129858807"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5057945842","display_name":"M. G. Garc\u00eda-Hern\u00e1ndez","orcid":null},"institutions":[{"id":"https://openalex.org/I129858807","display_name":"Universidad de Guanajuato","ror":"https://ror.org/058cjye32","country_code":"MX","type":"education","lineage":["https://openalex.org/I129858807"]}],"countries":["MX"],"is_corresponding":false,"raw_author_name":"M. G. Garcia-Hernandez","raw_affiliation_strings":["Electronics Engineering Department, Universidad de Guanajuato DICIS","DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico"],"affiliations":[{"raw_affiliation_string":"Electronics Engineering Department, Universidad de Guanajuato DICIS","institution_ids":["https://openalex.org/I129858807"]},{"raw_affiliation_string":"DICIS, Electron. Eng. Dept., Univ. de Guanajuato, Salamanca, Mexico","institution_ids":["https://openalex.org/I129858807"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5039444534"],"corresponding_institution_ids":["https://openalex.org/I129858807"],"apc_list":null,"apc_paid":null,"fwci":1.9055,"has_fulltext":false,"cited_by_count":35,"citation_normalized_percentile":{"value":0.89050914,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"28","last_page":"34"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11019","display_name":"Image Enhancement Techniques","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T11019","display_name":"Image Enhancement Techniques","score":1.0,"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"}},{"id":"https://openalex.org/T11105","display_name":"Advanced Image Processing Techniques","score":0.9957000017166138,"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/T10531","display_name":"Advanced Vision and Imaging","score":0.9944000244140625,"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/histogram-equalization","display_name":"Histogram equalization","score":0.8860042095184326},{"id":"https://openalex.org/keywords/adaptive-histogram-equalization","display_name":"Adaptive histogram equalization","score":0.8685722351074219},{"id":"https://openalex.org/keywords/histogram","display_name":"Histogram","score":0.8092694878578186},{"id":"https://openalex.org/keywords/brightness","display_name":"Brightness","score":0.7516753673553467},{"id":"https://openalex.org/keywords/histogram-matching","display_name":"Histogram matching","score":0.738397479057312},{"id":"https://openalex.org/keywords/sigmoid-function","display_name":"Sigmoid function","score":0.715033769607544},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.6734308004379272},{"id":"https://openalex.org/keywords/balanced-histogram-thresholding","display_name":"Balanced histogram thresholding","score":0.5953487157821655},{"id":"https://openalex.org/keywords/image-histogram","display_name":"Image histogram","score":0.5600026249885559},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.5495893955230713},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5313014984130859},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.4692889153957367},{"id":"https://openalex.org/keywords/color-normalization","display_name":"Color normalization","score":0.44948822259902954},{"id":"https://openalex.org/keywords/contrast-enhancement","display_name":"Contrast enhancement","score":0.4431341886520386},{"id":"https://openalex.org/keywords/contrast","display_name":"Contrast (vision)","score":0.4264459013938904},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.4210612177848816},{"id":"https://openalex.org/keywords/image-enhancement","display_name":"Image enhancement","score":0.4163159430027008},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3849155306816101},{"id":"https://openalex.org/keywords/image-processing","display_name":"Image processing","score":0.288296639919281},{"id":"https://openalex.org/keywords/image-texture","display_name":"Image texture","score":0.12790939211845398},{"id":"https://openalex.org/keywords/color-image","display_name":"Color image","score":0.1265885829925537},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.07802042365074158},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.05301666259765625}],"concepts":[{"id":"https://openalex.org/C136943445","wikidata":"https://www.wikidata.org/wiki/Q1970240","display_name":"Histogram equalization","level":4,"score":0.8860042095184326},{"id":"https://openalex.org/C30387639","wikidata":"https://www.wikidata.org/wiki/Q4680744","display_name":"Adaptive histogram equalization","level":5,"score":0.8685722351074219},{"id":"https://openalex.org/C53533937","wikidata":"https://www.wikidata.org/wiki/Q185020","display_name":"Histogram","level":3,"score":0.8092694878578186},{"id":"https://openalex.org/C125245961","wikidata":"https://www.wikidata.org/wiki/Q221656","display_name":"Brightness","level":2,"score":0.7516753673553467},{"id":"https://openalex.org/C127449775","wikidata":"https://www.wikidata.org/wiki/Q3785871","display_name":"Histogram matching","level":4,"score":0.738397479057312},{"id":"https://openalex.org/C81388566","wikidata":"https://www.wikidata.org/wiki/Q526668","display_name":"Sigmoid function","level":3,"score":0.715033769607544},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.6734308004379272},{"id":"https://openalex.org/C202577368","wikidata":"https://www.wikidata.org/wiki/Q2576067","display_name":"Balanced histogram thresholding","level":5,"score":0.5953487157821655},{"id":"https://openalex.org/C62725073","wikidata":"https://www.wikidata.org/wiki/Q1771663","display_name":"Image histogram","level":5,"score":0.5600026249885559},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.5495893955230713},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5313014984130859},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.4692889153957367},{"id":"https://openalex.org/C44404184","wikidata":"https://www.wikidata.org/wiki/Q5148620","display_name":"Color normalization","level":5,"score":0.44948822259902954},{"id":"https://openalex.org/C3018181011","wikidata":"https://www.wikidata.org/wiki/Q6849688","display_name":"Contrast enhancement","level":3,"score":0.4431341886520386},{"id":"https://openalex.org/C2776502983","wikidata":"https://www.wikidata.org/wiki/Q690182","display_name":"Contrast (vision)","level":2,"score":0.4264459013938904},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.4210612177848816},{"id":"https://openalex.org/C3017601658","wikidata":"https://www.wikidata.org/wiki/Q545981","display_name":"Image enhancement","level":3,"score":0.4163159430027008},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3849155306816101},{"id":"https://openalex.org/C9417928","wikidata":"https://www.wikidata.org/wiki/Q1070689","display_name":"Image processing","level":3,"score":0.288296639919281},{"id":"https://openalex.org/C63099799","wikidata":"https://www.wikidata.org/wiki/Q17147001","display_name":"Image texture","level":4,"score":0.12790939211845398},{"id":"https://openalex.org/C142616399","wikidata":"https://www.wikidata.org/wiki/Q5148604","display_name":"Color image","level":4,"score":0.1265885829925537},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07802042365074158},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.05301666259765625},{"id":"https://openalex.org/C143409427","wikidata":"https://www.wikidata.org/wiki/Q161238","display_name":"Magnetic resonance imaging","level":2,"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},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/conielecomp.2014.6808563","is_oa":false,"landing_page_url":"https://doi.org/10.1109/conielecomp.2014.6808563","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 International Conference on Electronics, Communications and Computers (CONIELECOMP)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Sustainable cities and communities","score":0.699999988079071,"id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W107968503","https://openalex.org/W1867048779","https://openalex.org/W1966883734","https://openalex.org/W1968963940","https://openalex.org/W1994863952","https://openalex.org/W2001185373","https://openalex.org/W2020986297","https://openalex.org/W2029402687","https://openalex.org/W2073751678","https://openalex.org/W2076252355","https://openalex.org/W2104781626","https://openalex.org/W2116930408","https://openalex.org/W2118002060","https://openalex.org/W2123873447","https://openalex.org/W2139375301","https://openalex.org/W2141704978","https://openalex.org/W2159040314","https://openalex.org/W2166615385","https://openalex.org/W2169447236","https://openalex.org/W6669053472"],"related_works":["https://openalex.org/W2162593906","https://openalex.org/W2015245117","https://openalex.org/W2354812287","https://openalex.org/W2266849835","https://openalex.org/W1999887679","https://openalex.org/W2521033063","https://openalex.org/W2376822833","https://openalex.org/W2170563037","https://openalex.org/W136559990","https://openalex.org/W2612807965"],"abstract_inverted_index":{"Among":[0],"the":[1,7,18,45,52,72,75,88,96],"contrast-enhancement":[2,106],"methods,":[3],"histogram":[4,47],"equalization":[5],"is":[6,14],"most":[8],"popular.":[9],"However,":[10],"its":[11,22],"major":[12],"drawback":[13],"that":[15,39,95],"it":[16,27],"over-enhances":[17],"image":[19,46],"and":[20,57,107],"shifts":[21],"mean":[23,53],"brightness":[24],"and,":[25],"consequently,":[26],"creates":[28],"an":[29],"unnatural":[30],"look.":[31],"In":[32],"this":[33,41],"paper,":[34],"we":[35],"propose":[36],"a":[37,55],"method":[38,78,98],"overcomes":[40],"problem":[42],"by":[43],"splitting":[44],"into":[48],"two":[49,64],"sub-histograms,":[50],"using":[51],"as":[54],"threshold,":[56],"replacing":[58],"their":[59,68],"cumulative":[60],"distribution":[61],"functions":[62],"with":[63,67],"smooth":[65],"sigmoids":[66],"origins":[69],"placed":[70],"on":[71,82],"median":[73],"of":[74,105],"sub-histograms.":[76],"Our":[77],"has":[79],"been":[80],"tested":[81],"gray":[83],"scale":[84],"images":[85],"taken":[86],"from":[87],"USC-SIPI":[89],"database.":[90],"Experimental":[91],"results":[92],"have":[93],"shown":[94],"proposed":[97],"outperforms":[99],"other":[100],"state-of-the-art":[101],"methods":[102],"in":[103],"terms":[104],"brightness-preservation.":[108]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":6},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":6},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}