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From: sc7@ukc.ac.uk (S.Chan)
Newsgroups: comp.compression
Subject: decimation/interpolation in image compression
Message-ID: <7811@harrier.ukc.ac.uk>
Date: 14 Jun 91 11:19:26 GMT
Organization: Computing Lab, University of Kent at Canterbury, UK.
Lines: 14

Hi,

I have recently started working on image data compression. I came across 
the terms decimation and interpolation as pre-processing and post-processing
in image compression. Could someone provide a brief explanation to these
terms? Pointers to relevant references are much welcome. Also, is decimation
the same as sub-sampling?         

By the way, does anyone know of a JPEG tram? Please kindly furnish info.
if you do. Thank you.

Chan Syin
Computing Laboratory
University of Kent, UK