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Near‐lossless compression methods for spectral images
Color Research & Application, 2011AbstractIn this work, several near‐lossless compression methods for spectral images have been analyzed and compared. These methods are based both on the principal component analysis (PCA) and on the choice of a minimum number of spectral points, selected following different criteria.
CIPRIAN, Roberta, Carbucicchio, M.
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NEAR-LOSSLESS COMPRESSION OF REMOTE-SENSING DATA
2003This paper describes data compression algorithms capable to preserve the scientific quality of remote-sensing data, yet allowing a considerable bandwidth reduction to be achieved. Unlike lossless techniques, by which a moderate compression ratio (CR) is attainable, due to the intrinsic noisiness of the data, and conventional lossy techniques, in which ...
Bruno Aiazzi +3 more
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Near-lossless compression of large alphabet sources
2012 46th Annual Conference on Information Sciences and Systems (CISS), 2012We study universal compression of independent and identically distributed sources over large alphabets using fixed-rate codes. To model large alphabets, we use sequences of discrete alphabets that increase in size with the blocklength. We show that universal compression is possible using deterministic codes provided that the alphabet growth is sub ...
Benjamin G. Kelly, Aaron B. Wagner
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Near lossless image compression system
2012 Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, 2012Image compression has become an important issue in relation to storage and transmission. A very simple and efficient near lossless image compression system is suggested in this paper. In the forward compression algorithm, image pixels are shifted right by the base value.
A. S. Mamatha, Vipula Singh
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Region-based near-lossless image compression
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002We present a near-lossless technique for the compression of images, which is based on the partitioning of the image into regions of constant intensity. The boundary information associated with the image partition is encoded with the method of the transition points. The compression of the intensities of the regions is based on the usual entropy encoding
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Single-rate near lossless compression of animated geometry
Computer-Aided Design, 2009Representing mesh geometry in local rather than the world coordinate systems is very useful in many 3D animation processing applications. One can investigate the representation of vertex locations relative to a local coordinate frame (LCF) in the compression of dynamic 3D meshes.
Rachida Amjoun, Wolfgang Straßer
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A new error criterion for near-lossless image compression
Proceedings of International Conference on Image Processing, 2002This paper presents a new criterion for near-lossless image compression and compares it with the more familiar maximum pixel error criterion in terms of compression performance and coded image subjective quality. In this new framework we compress an image in such a way that at each pixel the total error between the original and the coded images over a ...
Nasir D. Memon, Nader Moayeri
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Scalable near-lossless video compression based on HEVC
2017 IEEE Visual Communications and Image Processing (VCIP), 2017Lossless or near-lossless video compression with a certain maximum absolute reconstruction error is required in many professional applications like archiving or medical imaging. However, lossless coding resulting in rather high bit rates and near-lossless coding being traditionally used and especially optimized for still image coding prevents these ...
Andreas Heindel, André Kaup
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Lossless and near-lossless compression of still color images
Proceedings 1999 International Conference on Image Processing (Cat. 99CH36348), 2003This paper proposes a unified coding algorithm for lossless and near-lossless color image compression that exploits the correlations between RGB signals. For lossless coding, a reversible color transform is proposed that removes the correlations between RGB signals while avoiding any finite word length limitation.
Takayuki Nakachi +2 more
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Lossless and near-lossless image compression with color transformations
Proceedings 2001 International Conference on Image Processing (Cat. No.01CH37205), 2002A comparison of lossless compression results is given for RGB, YC/sub R/C/sub B/ and reversible JPEG 2000 color space. The paper describes the general conditions that rounding errors of a color transformation do not cumulate in the consecutive cycles of forward and inverse transformation.
Marek Domanski, Krzysztof Rakowski
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