A pyramidal coder using a nonlinear filter bank

We propose a novel pyramidal coder, which resembles the general structure of a JPEG coder, but which uses a nonlinear transform to replace the DCT. The nonlinear transform is obtained by the hierarchical application of a median filter predictor at subsampled versions of the original signal. The tran...

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Hauptverfasser:	de Queiroz, R.L., Florencio, D.A.F.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Discrete cosine transforms Discrete wavelet transforms Ear Filter bank Image coding Information filtering Information filters Nonlinear filters Signal resolution Spatial resolution
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container_end_page	1573 vol. 3
container_issue
container_start_page	1570
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container_volume	3
creator	de Queiroz, R.L. Florencio, D.A.F.
description	We propose a novel pyramidal coder, which resembles the general structure of a JPEG coder, but which uses a nonlinear transform to replace the DCT. The nonlinear transform is obtained by the hierarchical application of a median filter predictor at subsampled versions of the original signal. The transformed samples are grouped into square blocks and used to replace the DCT in the JPEG baseline coder. The proposed coder shows several advantages: computation is greatly reduced compared to the DCT, image edges are better encoded, blocking is eliminated, and it allows lossless coding. Objective comparisons show the superiority of the proposed coder against both baseline and lossless JPEG.
doi_str_mv	10.1109/ICASSP.1996.544101
format	Conference Proceeding
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Objective comparisons show the superiority of the proposed coder against both baseline and lossless JPEG.</description><subject>Discrete cosine transforms</subject><subject>Discrete wavelet transforms</subject><subject>Ear</subject><subject>Filter bank</subject><subject>Image coding</subject><subject>Information filtering</subject><subject>Information filters</subject><subject>Nonlinear filters</subject><subject>Signal resolution</subject><subject>Spatial resolution</subject><issn>1520-6149</issn><issn>2379-190X</issn><isbn>9780780331921</isbn><isbn>0780331923</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1996</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj8tqwzAUREUfUJP6B7LSD9i5Vw9LWobQFwRaSALdBT2ui1rHCXa6yN_XkA4DsxgYzjA2R6gRwS3eVsvN5qNG55paK4WAN6wQ0rgKHXzestIZC5OlRCfwjhWoBVQNKvfAynH8hklKa2FVwRZLfroM_pCT73g8Jhr475j7L-55f-y73JMfeJu781QE3_88svvWdyOV_zlju-en7eq1Wr-_TFzrKiOocxUweKQI5LVtTCAMNoBN0RI1mGLS5CZwNK2QImlDQRs0ECAGRBuFljM2v-5mItqfhnzww2V_fSv_AAi5RfI</recordid><startdate>1996</startdate><enddate>1996</enddate><creator>de Queiroz, R.L.</creator><creator>Florencio, D.A.F.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1996</creationdate><title>A pyramidal coder using a nonlinear filter bank</title><author>de Queiroz, R.L. ; Florencio, D.A.F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i104t-b1ba1ec0ea5867be1b8b08dc8ee61dcd5e944117f232d57eb57170b0cb118c253</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Discrete cosine transforms</topic><topic>Discrete wavelet transforms</topic><topic>Ear</topic><topic>Filter bank</topic><topic>Image coding</topic><topic>Information filtering</topic><topic>Information filters</topic><topic>Nonlinear filters</topic><topic>Signal resolution</topic><topic>Spatial resolution</topic><toplevel>online_resources</toplevel><creatorcontrib>de Queiroz, R.L.</creatorcontrib><creatorcontrib>Florencio, D.A.F.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>de Queiroz, R.L.</au><au>Florencio, D.A.F.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>A pyramidal coder using a nonlinear filter bank</atitle><btitle>1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings</btitle><stitle>ICASSP</stitle><date>1996</date><risdate>1996</risdate><volume>3</volume><spage>1570</spage><epage>1573 vol. 3</epage><pages>1570-1573 vol. 3</pages><issn>1520-6149</issn><eissn>2379-190X</eissn><isbn>9780780331921</isbn><isbn>0780331923</isbn><abstract>We propose a novel pyramidal coder, which resembles the general structure of a JPEG coder, but which uses a nonlinear transform to replace the DCT. The nonlinear transform is obtained by the hierarchical application of a median filter predictor at subsampled versions of the original signal. The transformed samples are grouped into square blocks and used to replace the DCT in the JPEG baseline coder. The proposed coder shows several advantages: computation is greatly reduced compared to the DCT, image edges are better encoded, blocking is eliminated, and it allows lossless coding. Objective comparisons show the superiority of the proposed coder against both baseline and lossless JPEG.</abstract><pub>IEEE</pub><doi>10.1109/ICASSP.1996.544101</doi></addata></record>
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language	eng
recordid	cdi_ieee_primary_544101
source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Discrete cosine transforms Discrete wavelet transforms Ear Filter bank Image coding Information filtering Information filters Nonlinear filters Signal resolution Spatial resolution
title	A pyramidal coder using a nonlinear filter bank
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