Results 31 to 40 of about 15,859 (260)
Massive Lossless Data Compression and Multiple Parameter Estimation from Galaxy Spectra [PDF]
, 1999 We present a method for radical linear compression of datasets where the data are dependent on some number $M$ of parameters. We show that, if the noise in the data is independent of the parameters, we can form $M$ linear combinations of the data which ...
Heavens, Alan +2 more
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Multiresolution vector quantization [PDF]
, 2004 Multiresolution source codes are data compression algorithms yielding embedded source descriptions. The decoder of a multiresolution code can build a source reproduction by decoding the embedded bit stream in part or in whole.
Dugatkin, Diego, Effros, Michelle
core +2 more sources
Virtually Lossless Compression of Astrophysical Images
EURASIP Journal on Advances in Signal Processing, 2005 We describe an image compression strategy potentially capable of preserving the scientific quality of astrophysical data, simultaneously allowing a consistent bandwidth reduction to be achieved.
Alparone Luciano +3 more
doaj +1 more source
Static 3D Triangle Mesh Compression Overview [PDF]
, 2008 3D triangle meshes are extremely used to model discrete surfaces, and almost always represented with two tables: one for geometry and another for connectivity.
Avilés Rodrigálvarez, Marcos +1 more
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Quantum Coarse Graining for Extreme Dimension Reduction in Modeling Stochastic Temporal Dynamics
PRX Quantum, 2021 Stochastic modeling of complex systems plays an essential, yet often computationally intensive, role across the quantitative sciences. Recent advances in quantum information processing have elucidated the potential for quantum simulators to exhibit ...
Thomas J. Elliott
doaj +1 more source
Why Shape Coding? Asymptotic Analysis of the Entropy Rate for Digital Images
Entropy, 2022 This paper focuses on the ultimate limit theory of image compression. It proves that for an image source, there exists a coding method with shapes that can achieve the entropy rate under a certain condition where the shape-pixel ratio in the encoder ...
Gangtao Xin +2 more
doaj +1 more source
Lossy Compression with Near-uniform Encoder Outputs
, 2016 It is well known that lossless compression of a discrete memoryless source with near-uniform encoder output is possible at a rate above its entropy if and only if the encoder is randomized.
Bloch, Matthieu +2 more
core +1 more source
Adaptation of the CCSDS 123.0-B-2 Standard for RGB Video Compression
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 The integration of video sensors on-board satellites is becoming a trend in the space industry, since they provide extra information in the temporal domain when compared with traditional remote sensing imaging acquisition equipment.
Yubal Barrios +3 more
doaj +1 more source
Data Compression in the Petascale Astronomy Era: a GERLUMPH case study
, 2015 As the volume of data grows, astronomers are increasingly faced with choices on what data to keep -- and what to throw away. Recent work evaluating the JPEG2000 (ISO/IEC 15444) standards as a future data format standard in astronomy has shown promising ...
Fluke, Christopher J. +2 more
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A novel semi-fragile forensic watermarking scheme for remote sensing images [PDF]
, 2011 Peer-reviewedA semi-fragile watermarking scheme for multiple band images is presented. We propose to embed a mark into remote sensing images applying a tree structured vector quantization approach to the pixel signatures, instead of processing each band ...
Aiazzi B. +24 more
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