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Lossless and near-lossless compression of EEG signals
Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136), 2002In this paper we study compression techniques for electroencephalograph (EEG) signals. A variety of lossless compression techniques, ranging from simple dictionary based approaches to more sophisticated context modeling techniques based on work in lossless image coding are investigated and compared.
J. Cinkler, X. Kong, N. Memon
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Lossless and Near-Lossless Compression for Mammographic Digital Images
2006 International Conference on Image Processing, 2006In this paper, a method for lossless and near lossless compression of large digital mammograms is proposed. This method is based on a predictive coder that uses integer-to-integer operations, and generates a two-layer embedded bit stream (i.e. near-lossless and refinement layer). The maximum tolerated pixel distortion is guaranteed in the near lossless
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Optics Letters, 1997
A new technique for energy-preserving phase-only light projection is demonstrated. The phase-only encoding is based on an extension of the Zernike phase-contrast method into the domain of full-range [0; 2pi ] phase modulation, breaking the usual small-phase-angle limitation.
J, Glückstad +3 more
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A new technique for energy-preserving phase-only light projection is demonstrated. The phase-only encoding is based on an extension of the Zernike phase-contrast method into the domain of full-range [0; 2pi ] phase modulation, breaking the usual small-phase-angle limitation.
J, Glückstad +3 more
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Context Adaptive Lossless and Near-Lossless Coding for Digital Angiographies
2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007This paper presents a context adaptive coding method for image sequences in hemodynamics. The proposed method implements motion compensation through of a two-stage context adaptive linear predictor. It is robust to the local intensity changes and the noise that often degrades these image sequences, and provides lossless and near-lossless quality.
Rafael A P, dos Santos +1 more
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FFV1 and JPEG2000 appeal to archival institutions because of their promise of perfect digital storage without loss and decay. This chapter examines how lossless video standards operate on a technical and material level, paradoxically reaffirming the stubbornly lossy materiality of digital archival media. After a brief conceptual history of losslessness
Jimi Jones, Marek Jancovic
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Jimi Jones, Marek Jancovic
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Semi-lossless text compression
Data Compression Conference, 2004. Proceedings. DCC 2004, 2004A new notion, that of semi-lossless text compression, is introduced, and its applicability in various settings is investigated. First results suggest that it might be hard to exploit the additional redundancy of English texts, but the new methods could be useful in applications where the correct spelling is not important, such as in short emails, and ...
Yair Kaufman, Shmuel T. Klein
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International Journal of Computer Mathematics, 2001
There is a well-known algorithm for determining when a decomposition of a database relation scheme has a lossless join with respect to a set of functional dependencies. We first present a reformulation of this algorithm in terms of set closures. For the special case of m=2, there is a well-known explicit condition for losslessness.
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There is a well-known algorithm for determining when a decomposition of a database relation scheme has a lossless join with respect to a set of functional dependencies. We first present a reformulation of this algorithm in terms of set closures. For the special case of m=2, there is a well-known explicit condition for losslessness.
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Context-based lossless and near-lossless compression of EEG signals
IEEE Transactions on Information Technology in Biomedicine, 1999In this paper, we study compression techniques for electroencephalograph (EEG) signals. A variety of lossless compression techniques, including compress, gzip, bzip, shorten, and several predictive coding methods, are investigated and compared. The methods range from simple dictionary-based approaches to more sophisticated context modeling techniques ...
Nasir D. Memon, Xuan Kong, Judit Cinkler
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Computer Methods and Programs in Biomedicine, 1997
We have studied the lossless encoding of ECG signals. With suitable code we aim to reduce the storage space needed by ECG signals. Several methods designed for ECG compression use lossy, i.e. irreversible techniques, in which the original signal is lost, but the restored approximation is almost equal to the original.
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We have studied the lossless encoding of ECG signals. With suitable code we aim to reduce the storage space needed by ECG signals. Several methods designed for ECG compression use lossy, i.e. irreversible techniques, in which the original signal is lost, but the restored approximation is almost equal to the original.
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Lossless Reduction of Datacubes
2006Datacubes are specially useful for answering efficiently queries on data warehouses. Nevertheless the amount of generated aggregated data is incomparably more voluminous than the initial data which is itself very large. Recently, research work has addressed the issue of a concise representation of datacubes in order to reduce their size.
Alain Casali +3 more
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