{"id":"https://openalex.org/W2135726055","doi":"https://doi.org/10.1109/iscas.2009.5117913","title":"Bit-depth expansion by contour region reconstruction","display_name":"Bit-depth expansion by contour region reconstruction","publication_year":2009,"publication_date":"2009-05-01","ids":{"openalex":"https://openalex.org/W2135726055","doi":"https://doi.org/10.1109/iscas.2009.5117913","mag":"2135726055"},"language":"en","primary_location":{"id":"doi:10.1109/iscas.2009.5117913","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2009.5117913","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Symposium on Circuits and Systems","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/A5026913534","display_name":"Cheuk-Hong Cheng","orcid":null},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Cheuk-Hong Cheng","raw_affiliation_strings":["Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010546001","display_name":"Oscar C. Au","orcid":null},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Oscar C. Au","raw_affiliation_strings":["Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084900180","display_name":"Chun\u2010Hung Liu","orcid":"https://orcid.org/0000-0001-8822-9966"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Chun-Hung Liu","raw_affiliation_strings":["Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006940239","display_name":"Ka-Yue Yip","orcid":null},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Ka-Yue Yip","raw_affiliation_strings":["Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic & Computer Engineering, Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong#TAB#","institution_ids":["https://openalex.org/I200769079"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I200769079"],"apc_list":null,"apc_paid":null,"fwci":1.6106,"has_fulltext":false,"cited_by_count":53,"citation_normalized_percentile":{"value":0.8610921,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"944","last_page":"947"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11019","display_name":"Image Enhancement Techniques","score":0.9991000294685364,"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":0.9991000294685364,"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":0.9987000226974487,"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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9965999722480774,"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/contouring","display_name":"Contouring","score":0.7675042152404785},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.721909761428833},{"id":"https://openalex.org/keywords/color-depth","display_name":"Color depth","score":0.6945080757141113},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6913830041885376},{"id":"https://openalex.org/keywords/bit","display_name":"Bit (key)","score":0.6870241165161133},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6505184173583984},{"id":"https://openalex.org/keywords/color-image","display_name":"Color image","score":0.5190706849098206},{"id":"https://openalex.org/keywords/bit-plane","display_name":"Bit plane","score":0.4590299427509308},{"id":"https://openalex.org/keywords/depth-map","display_name":"Depth map","score":0.4527941942214966},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.38684895634651184},{"id":"https://openalex.org/keywords/computer-graphics","display_name":"Computer graphics (images)","score":0.26853102445602417},{"id":"https://openalex.org/keywords/image-processing","display_name":"Image processing","score":0.1932985782623291},{"id":"https://openalex.org/keywords/bit-field","display_name":"Bit field","score":0.17546409368515015},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.10867634415626526}],"concepts":[{"id":"https://openalex.org/C2779104521","wikidata":"https://www.wikidata.org/wiki/Q23058469","display_name":"Contouring","level":2,"score":0.7675042152404785},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.721909761428833},{"id":"https://openalex.org/C91522604","wikidata":"https://www.wikidata.org/wiki/Q690110","display_name":"Color depth","level":5,"score":0.6945080757141113},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6913830041885376},{"id":"https://openalex.org/C117011727","wikidata":"https://www.wikidata.org/wiki/Q1278488","display_name":"Bit (key)","level":2,"score":0.6870241165161133},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6505184173583984},{"id":"https://openalex.org/C142616399","wikidata":"https://www.wikidata.org/wiki/Q5148604","display_name":"Color image","level":4,"score":0.5190706849098206},{"id":"https://openalex.org/C56056324","wikidata":"https://www.wikidata.org/wiki/Q878866","display_name":"Bit plane","level":4,"score":0.4590299427509308},{"id":"https://openalex.org/C141268832","wikidata":"https://www.wikidata.org/wiki/Q2940499","display_name":"Depth map","level":3,"score":0.4527941942214966},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.38684895634651184},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.26853102445602417},{"id":"https://openalex.org/C9417928","wikidata":"https://www.wikidata.org/wiki/Q1070689","display_name":"Image processing","level":3,"score":0.1932985782623291},{"id":"https://openalex.org/C183383400","wikidata":"https://www.wikidata.org/wiki/Q2374485","display_name":"Bit field","level":3,"score":0.17546409368515015},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.10867634415626526},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C2777299769","wikidata":"https://www.wikidata.org/wiki/Q3707858","display_name":"Type (biology)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iscas.2009.5117913","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iscas.2009.5117913","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Symposium on Circuits and Systems","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1629120112","https://openalex.org/W2003578338","https://openalex.org/W2004488044","https://openalex.org/W2096257868","https://openalex.org/W2141936613","https://openalex.org/W2293470057","https://openalex.org/W4235108105"],"related_works":["https://openalex.org/W2216907995","https://openalex.org/W2078566741","https://openalex.org/W102548248","https://openalex.org/W1806074025","https://openalex.org/W2809734899","https://openalex.org/W3011488731","https://openalex.org/W2349299344","https://openalex.org/W2094705558","https://openalex.org/W2371889927","https://openalex.org/W2389993487"],"abstract_inverted_index":{"Color":[0],"bit-depth":[1,20,30,39,45,56,62],"is":[2,31,68,85],"an":[3,32],"important":[4,33],"attribute":[5],"to":[6,99,104],"image":[7,14,34,46],"quality.":[8,26,78],"However,":[9,58],"the":[10,18,28,76,89,101],"precision":[11],"in":[12,24,59,70],"various":[13],"capture":[15],"devices":[16],"limits":[17],"color":[19,29,44,55,61],"and":[21],"introduces":[22],"loss":[23],"visual":[25,49,77],"Expanding":[27],"enhancement":[35],"issue.":[36],"A":[37],"good":[38],"expansion":[40,63],"system":[41],"manipulates":[42],"low":[43],"for":[47],"best":[48],"quality":[50],"as":[51],"displayed":[52],"on":[53],"high":[54],"monitors.":[57],"most":[60],"algorithms,":[64],"severe":[65],"contouring":[66],"effect":[67],"observed":[69],"smooth":[71],"gradient":[72,95],"area":[73],"which":[74],"degrades":[75],"In":[79],"this":[80],"paper,":[81],"a":[82],"novel":[83],"approach":[84],"proposed.":[86],"By":[87],"considering":[88],"distance":[90],"from":[91],"contour":[92,102],"edges,":[93],"fine":[94],"value":[96],"are":[97],"applied":[98],"fill":[100],"gaps":[103],"achieve":[105],"gradual":[106],"transaction.":[107]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":9},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":3}],"updated_date":"2026-08-12T21:12:35.861297","created_date":"2025-10-10T00:00:00"}