Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004acs..rept...16c&link_type=abstract
Instrument Science Report ACS 2004-02, 16 pages
Astronomy and Astrophysics
Astronomy
Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Image Compression
Scientific paper
A method of compressing images stored as floating point arrays was proposed several years ago by White and Greenfield. With the increased image sizes encountered in the last few years and the consequent need to distribute large data volumes, the value of applying such a procedure has become more evident. Methods such as this which offer significant compression ratios are lossy and there is always some concern that statistically important information might be discarded. Several astronomical images have been analyzed and, in the examples tested, compression ratios of about six were obtained with no significant information loss.
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