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检索条件"主题词=Arithmetic coding"
480 条 记 录,以下是411-420 订阅
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Data encryption scheme with extended artithmetic coding
Data encryption scheme with extended artithmetic coding
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4th Conference on Mathematics of Image and Data coding, Compression, and Encryption
作者: Ishibashi, H Tanaka, K Shinshu Univ Fac Engn Nagano 3808553 Japan
In this work, we extend arithmetic coding and present a data encryption scheme that achieves data compression and data security at the same time. This scheme is based on a chaotic dynamics, which makes use of the fact... 详细信息
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Universal lossless data compression with side information by using a conditional MPM grammar transform
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IEEE TRANSACTIONS ON INFORMATION THEORY 2001年 第6期47卷 2130-2150页
作者: Yang, EH Kaltchenko, A Kieffer, JC Univ Waterloo Dept Elect & Comp Engn Waterloo ON N2L 3G1 Canada Univ Minnesota Dept Elect & Comp Engn Minneapolis MN 55455 USA
A grammar transform is a transformation that converts any data sequence to be compressed into a grammar from which the original data sequence can be fully reconstructed. In a grammar-based code, a data sequence is fir... 详细信息
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A rapid probability estimator and binary arithmetic coder
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IEEE TRANSACTIONS ON INFORMATION THEORY 2001年 第4期47卷 1533-1537页
作者: Withers, WD USN Acad Dept Math Annapolis MD 21402 USA Pegasus Imaging Corp Imagetech Tampa FL 33607 USA
We present a new integrated algorithm fur binary arithmetic coding and probability estimation, competitive in speed and compression performance with state-of-the-art algorithms such as the QM-coder and Z-coder. The ch... 详细信息
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Lossy compression of grayscale document images by adaptive-offset quantization
Lossy compression of grayscale document images by adaptive-o...
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8th Annual Document Recognition and Retrieval Conference
作者: Popat, K Xerox Palo Alto Res Ctr Palo Alto CA 94304 USA
This paper describes an adaptive-offset quantization scheme and considers its application to the lossy compression of grayscale document images. The technique involves scalar-quantizing and entropy-coding pixels seque... 详细信息
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An adaptable binary entropy coder
An adaptable binary entropy coder
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Data Compression Conference (DCC 2001)
作者: Kiely, A Klimesh, M CALTECH Jet Prop Lab Pasadena CA 91109 USA
We present a novel entropy coding technique which is based on recursive interleaving of variable-to-variable length binary source codes. The encoding is adaptable in that each bit to be encoded may have an associated ... 详细信息
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Group Testing for Wavelet Packet image compression
Group Testing for Wavelet Packet image compression
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Data Compression Conference (DCC 2001)
作者: Hong, ES Ladner, RE Riskin, EA Univ Washington Dept Comp Sci & Engn Seattle WA 98195 USA
This paper introduces Group Testing for Wavelet Packets (GTWP), a novel embedded image compression algorithm based on wavelet packets and group testing. This algorithm extends the Group Testing for Wavelets (GTW) algo... 详细信息
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arithmetic coding revisited
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ACM TRANSACTIONS ON INFORMATION SYSTEMS 1998年 第3期16卷 256-294页
作者: Moffat, A Neal, RM Witten, IH Univ Melbourne Dept Comp Sci Parkville Vic 3052 Australia Univ Toronto Dept Comp Sci Toronto ON Canada Univ Toronto Dept Stat Toronto ON Canada Univ Waikato Dept Comp Sci Hamilton New Zealand
Over the fast decade, arithmetic coding has emerged as an important compression tool. It is now the method of choice for adaptive coding on multisymbol alphabets because of its speed, low storage requirements, and eff... 详细信息
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A VLSI architecture for arithmetic coding of multilevel images
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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING 1998年 第1期45卷 163-168页
作者: Boo, M Bruguera, JD Lang, T Univ Calif Irvine Dept Elect & Comp Engn Irvine CA 92664 USA
We describe a VLSI architecture of an arithmetic coder for a multilevel alphabet (256 symbols) that includes the storing and updating of probabilities, the updating of the interval, and the correction of the codeword,... 详细信息
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Compression of sparse matrices by arithmetic coding
Compression of sparse matrices by arithmetic coding
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Data Compression Conference
作者: Bell, T McKenzie, B Univ Canterbury Dept Comp Sci Christchurch 1 New Zealand
The compression of matrices where the majority of the entries are a fixed constant (most typically zero), usually referred to as sparse matrices, has received much attention. We evaluate the performance of existing me... 详细信息
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Piecewise integer mapping for arithmetic coding
Piecewise integer mapping for arithmetic coding
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Data Compression Conference
作者: Stuiver, L Moffat, A Univ Melbourne Dept Comp Sci Parkville Vic 3052 Australia
By asking afresh exactly what it is the arithmetic coder must do, we show how much of the complexity of current coders can be dispensed with. In particular, we eliminate all multiplicative operations in both the encod... 详细信息
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