{"id":"https://openalex.org/W2125347316","doi":"https://doi.org/10.1109/icassp.2011.5946525","title":"Rate-distortion improvement of directional wavelets by megablocking","display_name":"Rate-distortion improvement of directional wavelets by megablocking","publication_year":2011,"publication_date":"2011-05-01","ids":{"openalex":"https://openalex.org/W2125347316","doi":"https://doi.org/10.1109/icassp.2011.5946525","mag":"2125347316"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.2011.5946525","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2011.5946525","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","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/A5017771205","display_name":"Arian Maleki","orcid":"https://orcid.org/0000-0002-5626-5206"},"institutions":[{"id":"https://openalex.org/I97018004","display_name":"Stanford University","ror":"https://ror.org/00f54p054","country_code":"US","type":"education","lineage":["https://openalex.org/I97018004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Arian Maleki","raw_affiliation_strings":["Department of Electrical Engineering, University of Stanford, USA","[Department of Electrical Engineering Stanford University, USA]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Stanford, USA","institution_ids":["https://openalex.org/I97018004"]},{"raw_affiliation_string":"[Department of Electrical Engineering Stanford University, USA]","institution_ids":["https://openalex.org/I97018004"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5030781447","display_name":"Boshra Rajaei","orcid":"https://orcid.org/0000-0003-0969-0389"},"institutions":[{"id":"https://openalex.org/I86958956","display_name":"Ferdowsi University of Mashhad","ror":"https://ror.org/00g6ka752","country_code":"IR","type":"education","lineage":["https://openalex.org/I86958956"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Boshra Rajaei","raw_affiliation_strings":["Department of Computer Engineering, Ferdowsi University of Mashhad, Iran","Dept of Computer Engineering, Ferdowsi University of Mashhad, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, Ferdowsi University of Mashhad, Iran","institution_ids":["https://openalex.org/I86958956"]},{"raw_affiliation_string":"Dept of Computer Engineering, Ferdowsi University of Mashhad, Iran","institution_ids":["https://openalex.org/I86958956"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5040672682","display_name":"Hamid Reza Pourreza","orcid":"https://orcid.org/0000-0002-3560-8070"},"institutions":[{"id":"https://openalex.org/I86958956","display_name":"Ferdowsi University of Mashhad","ror":"https://ror.org/00g6ka752","country_code":"IR","type":"education","lineage":["https://openalex.org/I86958956"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Hamid R. Pourreza","raw_affiliation_strings":["Department of Computer Engineering, Ferdowsi University of Mashhad, Iran","Dept of Computer Engineering, Ferdowsi University of Mashhad, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, Ferdowsi University of Mashhad, Iran","institution_ids":["https://openalex.org/I86958956"]},{"raw_affiliation_string":"Dept of Computer Engineering, Ferdowsi University of Mashhad, Iran","institution_ids":["https://openalex.org/I86958956"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.7134,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.71278045,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"17","issue":null,"first_page":"801","last_page":"804"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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/T11659","display_name":"Advanced Image Fusion Techniques","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"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/T10901","display_name":"Advanced Data Compression Techniques","score":0.9990000128746033,"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/quadtree","display_name":"Quadtree","score":0.9465807676315308},{"id":"https://openalex.org/keywords/wavelet","display_name":"Wavelet","score":0.8615975975990295},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6007598638534546},{"id":"https://openalex.org/keywords/distortion","display_name":"Distortion (music)","score":0.5683704018592834},{"id":"https://openalex.org/keywords/legendre-wavelet","display_name":"Legendre wavelet","score":0.5332194566726685},{"id":"https://openalex.org/keywords/image-compression","display_name":"Image compression","score":0.5256182551383972},{"id":"https://openalex.org/keywords/wavelet-transform","display_name":"Wavelet transform","score":0.49387484788894653},{"id":"https://openalex.org/keywords/separable-space","display_name":"Separable space","score":0.4837074875831604},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4725204110145569},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.46413370966911316},{"id":"https://openalex.org/keywords/multiresolution-analysis","display_name":"Multiresolution analysis","score":0.45294469594955444},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.36393141746520996},{"id":"https://openalex.org/keywords/discrete-wavelet-transform","display_name":"Discrete wavelet transform","score":0.3521067202091217},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.3371877670288086},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3150222897529602},{"id":"https://openalex.org/keywords/image-processing","display_name":"Image processing","score":0.20880356431007385},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.11066818237304688},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.10188028216362},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.07402613759040833}],"concepts":[{"id":"https://openalex.org/C151416825","wikidata":"https://www.wikidata.org/wiki/Q934791","display_name":"Quadtree","level":2,"score":0.9465807676315308},{"id":"https://openalex.org/C47432892","wikidata":"https://www.wikidata.org/wiki/Q831390","display_name":"Wavelet","level":2,"score":0.8615975975990295},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6007598638534546},{"id":"https://openalex.org/C126780896","wikidata":"https://www.wikidata.org/wiki/Q899871","display_name":"Distortion (music)","level":4,"score":0.5683704018592834},{"id":"https://openalex.org/C123769847","wikidata":"https://www.wikidata.org/wiki/Q6517888","display_name":"Legendre wavelet","level":5,"score":0.5332194566726685},{"id":"https://openalex.org/C13481523","wikidata":"https://www.wikidata.org/wiki/Q412438","display_name":"Image compression","level":4,"score":0.5256182551383972},{"id":"https://openalex.org/C196216189","wikidata":"https://www.wikidata.org/wiki/Q2867","display_name":"Wavelet transform","level":3,"score":0.49387484788894653},{"id":"https://openalex.org/C70710897","wikidata":"https://www.wikidata.org/wiki/Q680081","display_name":"Separable space","level":2,"score":0.4837074875831604},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4725204110145569},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.46413370966911316},{"id":"https://openalex.org/C121927907","wikidata":"https://www.wikidata.org/wiki/Q1952516","display_name":"Multiresolution analysis","level":5,"score":0.45294469594955444},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.36393141746520996},{"id":"https://openalex.org/C46286280","wikidata":"https://www.wikidata.org/wiki/Q2414958","display_name":"Discrete wavelet transform","level":4,"score":0.3521067202091217},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3371877670288086},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3150222897529602},{"id":"https://openalex.org/C9417928","wikidata":"https://www.wikidata.org/wiki/Q1070689","display_name":"Image processing","level":3,"score":0.20880356431007385},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.11066818237304688},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.10188028216362},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.07402613759040833},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.2011.5946525","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2011.5946525","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W1485280399","https://openalex.org/W1979725798","https://openalex.org/W2024952661","https://openalex.org/W2041251040","https://openalex.org/W2056963858","https://openalex.org/W2066462711","https://openalex.org/W2091659514","https://openalex.org/W2109504624","https://openalex.org/W2112413732","https://openalex.org/W2115755118","https://openalex.org/W2117853853","https://openalex.org/W2125347316","https://openalex.org/W2140377889","https://openalex.org/W2145263492","https://openalex.org/W2150321361","https://openalex.org/W2165322257","https://openalex.org/W2169244200","https://openalex.org/W2171177138","https://openalex.org/W4239022279","https://openalex.org/W6681924313"],"related_works":["https://openalex.org/W1989245352","https://openalex.org/W2001520917","https://openalex.org/W2162295290","https://openalex.org/W2112631277","https://openalex.org/W2997437750","https://openalex.org/W1967111219","https://openalex.org/W1577925588","https://openalex.org/W1608252476","https://openalex.org/W1563286744","https://openalex.org/W2079728076"],"abstract_inverted_index":{"The":[0],"inefficiency":[1],"of":[2,20,76,83],"separable":[3,42],"wavelets":[4,39,43,59,79],"in":[5,24,44],"representing":[6],"smooth":[7],"edges":[8],"has":[9],"motivated":[10],"the":[11,21,28,37,41,57,73,77,89,93,112],"researchers":[12,32],"to":[13,51],"pursue":[14],"new":[15],"two":[16],"dimensional":[17],"transformations.":[18],"One":[19],"successful":[22],"transformations":[23],"image":[25],"compression":[26],"is":[27,47],"directional":[29,38,58,78],"wavelets.":[30],"Although":[31],"have":[33],"empirically":[34],"shown":[35],"that":[36,88,109],"outperform":[40],"compression,":[45],"there":[46],"no":[48],"theoretical":[49,104],"analysis":[50,86],"demonstrate":[52],"this":[53,69],"phenomena,":[54],"specially":[55],"when":[56],"are":[60],"combined":[61],"with":[62],"partitioning":[63,91],"algorithms":[64],"such":[65],"as":[66],"quadtree.":[67],"In":[68],"paper,":[70],"we":[71,97],"calculate":[72],"rate-distortion":[74],"performance":[75],"on":[80],"a":[81],"class":[82],"images.":[84],"Our":[85,103],"shows":[87],"quadtree":[90,113],"deteriorates":[92],"performance.":[94],"There":[95],"fore":[96],"propose":[98],"another":[99],"scheme,":[100],"called":[101],"megablocking.":[102],"and":[105],"simulation":[106],"results":[107],"confirm":[108],"megablocking":[110],"outperforms":[111],"approach.":[114]},"counts_by_year":[{"year":2012,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
