JPEG and image size

mailto:KIM@RADSL.MHS.HARVARD.EDU
Fri, 10 Mar 1995 14:05:34 -0500

Message-Id: <mailto:199503102100.PAA23049@library.wustl.edu>
Date:         Fri, 10 Mar 1995 14:05:34 -0500
From: mailto:KIM@RADSL.MHS.HARVARD.EDU>
Subject:      JPEG and image size
To: Multiple recipients of list IMAGELIB

Hello.
  I'm afraid I don't quite know how to phrase this question, but here
goes.  I know that when you use JPEG you can choose what degree to which
the algorithm will compress a file, and this degree affects file size and
image quality in opposite directions.  1. What degree, or percentage, or
whatever the proper term is, have people used without losing an
unacceptable amount of image information, 2. can someone give me an
example of the change in file size using this degree.

An example of the information I'm looking for, with completely made-up figures, is: at 75% a 1 megabyte file turns into 300k.

Thank you very much, kim brookes, in grant proposal hell Schlesinger Library, Radcliffe College mailto:k_brookes@harvard.edu