Polycomp: Efficient and configurable compression of astronomical timelines
نویسندگان
چکیده
منابع مشابه
Astronomical image compression
We compare a range of powerful compression methods – fractal, wavelets, pyramidal median, JPEG – with compression tools dedicated to astronomy such as HCOMPRESS, FITSPRESS and Mathematical Morphology, and apply these to astronomical images. Quality is quantified from visual appearance, and from photometric and astrometric measurements. Computational requirements of each method are discussed. We...
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An image compression algorithm has been developed that is well-suited to astronomical images. The method has 3 steps: an intensity mapping to generate an image that has roughly constant noise in each pixel, an orthonormal wavelet transform, and quadtree coding of the bit-planes of the wavelet coe cients. The quadtree values may be further compressed by any standard compression technique, such a...
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The goal of this paper is to present and compare a range of powerful compression methods (fractal, wavelets, other multiscale methods, JPEG) applied to astronomical images. Quality is quantiied from visual appearance, and from photometric and astrometric measurements. Computational requirements of each method are discussed. We also review the implications of Web-based storage and transmission, ...
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ژورنال
عنوان ژورنال: Astronomy and Computing
سال: 2016
ISSN: 2213-1337
DOI: 10.1016/j.ascom.2016.04.004