Restoration of low frequency coefficients
The DC coefficient restoration scheme is a technique which can be used to increase the compression ability of transform image coding by not transmitting the DC coefficients but instead estimating them from the transmitted AC component. Tse and Cham (see Fifth International Conference on Image Proces...
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| creator | Cham, W.K. Tse, F.W. |
| description | The DC coefficient restoration scheme is a technique which can be used to increase the compression ability of transform image coding by not transmitting the DC coefficients but instead estimating them from the transmitted AC component. Tse and Cham (see Fifth International Conference on Image Processing and Its Application, p.569-73, 1995) proposed an improved version of the technique which allows an image to be restored with no or small visual degradation by transmitting a small portion of the DC coefficients. We show that the same technique can be used to restore not only the DC coefficients but also a portion of AC coefficients. As a result, a higher compression ratio can be obtained. |
| doi_str_mv | 10.1109/ICSIGP.1996.566281 |
| format | Conference Proceeding |
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Tse and Cham (see Fifth International Conference on Image Processing and Its Application, p.569-73, 1995) proposed an improved version of the technique which allows an image to be restored with no or small visual degradation by transmitting a small portion of the DC coefficients. We show that the same technique can be used to restore not only the DC coefficients but also a portion of AC coefficients. 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As a result, a higher compression ratio can be obtained.</description><subject>Degradation</subject><subject>Discrete cosine transforms</subject><subject>Discrete transforms</subject><subject>Frequency</subject><subject>Image coding</subject><subject>Image restoration</subject><subject>Pixel</subject><subject>Radio access networks</subject><subject>Transform coding</subject><isbn>0780329120</isbn><isbn>9780780329126</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1996</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotj8tKAzEUQAMiqLU_0NVsXcx487qZLGXQOlBQfKxLkrmBSJ3oZErp3yu0Z3N2Bw5jKw4N52Dv--69X7823FpsNKJo-QW7AdOCFJYLuGLLUr7gH6W1FHjN7t6ozHlyc8pjlWO1y4cqTvS7pzEcq5ApxhQSjXO5ZZfR7Qotz16wz6fHj-653rys--5hUycOaq5FJHKDNxh4REnKtmqwCsD4AQxvB2OD0VJHQ568FNpZqRCRrA8ehZVywVanbiKi7c-Uvt103J5m5B8RBz_G</recordid><startdate>1996</startdate><enddate>1996</enddate><creator>Cham, W.K.</creator><creator>Tse, F.W.</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>Restoration of low frequency coefficients</title><author>Cham, W.K. ; Tse, F.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i104t-2feeadb76c1f63e4984d94007bd0718d79c7535f7ebeb325a934666e9bcb62933</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Degradation</topic><topic>Discrete cosine transforms</topic><topic>Discrete transforms</topic><topic>Frequency</topic><topic>Image coding</topic><topic>Image restoration</topic><topic>Pixel</topic><topic>Radio access networks</topic><topic>Transform coding</topic><toplevel>online_resources</toplevel><creatorcontrib>Cham, W.K.</creatorcontrib><creatorcontrib>Tse, F.W.</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>Cham, W.K.</au><au>Tse, F.W.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Restoration of low frequency coefficients</atitle><btitle>Proceedings of Third International Conference on Signal Processing (ICSP'96)</btitle><stitle>ICSIGP</stitle><date>1996</date><risdate>1996</risdate><volume>2</volume><spage>1082</spage><epage>1085 vol.2</epage><pages>1082-1085 vol.2</pages><isbn>0780329120</isbn><isbn>9780780329126</isbn><abstract>The DC coefficient restoration scheme is a technique which can be used to increase the compression ability of transform image coding by not transmitting the DC coefficients but instead estimating them from the transmitted AC component. Tse and Cham (see Fifth International Conference on Image Processing and Its Application, p.569-73, 1995) proposed an improved version of the technique which allows an image to be restored with no or small visual degradation by transmitting a small portion of the DC coefficients. We show that the same technique can be used to restore not only the DC coefficients but also a portion of AC coefficients. As a result, a higher compression ratio can be obtained.</abstract><pub>IEEE</pub><doi>10.1109/ICSIGP.1996.566281</doi></addata></record> |
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| identifier | ISBN: 0780329120 |
| ispartof | Proceedings of Third International Conference on Signal Processing (ICSP'96), 1996, Vol.2, p.1082-1085 vol.2 |
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| language | eng |
| recordid | cdi_ieee_primary_566281 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Degradation Discrete cosine transforms Discrete transforms Frequency Image coding Image restoration Pixel Radio access networks Transform coding |
| title | Restoration of low frequency coefficients |
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