NetNews Usenet Archive 1993 #3/NN_1993_3.iso/spool/alt/galactic/935

Internet Message Format | 1993-01-28 | 1.6 KB

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From: [e-mail] (Michael Nerone)
Newsgroups: alt.galactic-guide
Subject: Re: Getting AmiGuide to work?
Date: 27 Jan 93 06:27:19
Organization: The University of Texas at Austin
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In-reply-to: [e-mail]'s message of 27 Jan 93 10:40:00 GMT


What needs to be kept in mind here is the fact that JPEG provides
VARIABLE compression.  If you choose BIGTIME compression, then you
will get very small, albeit very lossy files.  JPEG IS capable of
lossless compression, though, although in my experience, they only
come out 10-15% smaller than the corresponding GIF (although you DO
have it in 24 bits with JPEG).  Clearly, the right answer is allow
slight (negligible) loss with better compression.  Shoot for maybe
only 40% compression.  That should not have an alarming impact on the
image quality.  Of course, this can be tailored to the image.  Eg. in
an extreme case of a simple geometric shape, 90% can be achieved with
no noticable loss.

--
   /~~~~~~~~~~~~~~~~~~~\/~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\
  /    Michael Nerone   \"I shall do so with my customary lack of tact; and\
 /   Internet Address:   \since you have asked for this, you will be obliged\
/[e-mail]\to pardon it."-Sagredo, fictional char of Galileo.\