NDLI: On the distribution of the DCT coefficients

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On the distribution of the DCT coefficients

Content Provider	IEEE Xplore Digital Library
Author	Eude, T. Grisel, R. Cherifi, H. Debrie, R.
Copyright Year	1994
Description	Author affiliation: Inst. Nat. des Sci. Appliquees, Mont Saint Aignan, France (Eude, T.)
Abstract	The paper presents a statistical study in order to improve the image compression rate in discrete cosine transform (DCT) based methods and especially for compression methods which are defined in JPEG norm. It is realised extensively, using a battery of parametric and non-parametric fit-tests and laws such as those of Cauchy, Laplace, Gauss, and a mixture distribution of Laplace and Gaussian. Considering the absence of results for these laws in the literature, the authors constructed adapted statistical tools for DCT coefficients analysis. Then, they show that these coefficients can be modelized by a Gaussian finite mixture distribution. They also comment on the obtained results for medical images applications and explain how the compression rate can be improve with them.<>
File Size	395709
File Format	PDF
ISBN	0780317750
ISSN	15206149
DOI	10.1109/ICASSP.1994.389412
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-19
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Discrete cosine transforms Image coding Transform coding Biomedical imaging Quantization Gaussian distribution Wavelet transforms Testing Batteries Pixel
Content Type	Text
Resource Type	Article

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