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From: tuna@athena.mit.edu (Kirk 'UhOh' Johnson)
Newsgroups: comp.graphics
Subject: Re: Compression of multi-bit images
Message-ID: <1990Jun4.225046.23448@athena.mit.edu>
Date: 4 Jun 90 22:50:46 GMT
References: <8099@b11.ingr.com> <SPENCER.90Jun4170821@spline.eecs.umich.edu>
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spencer@eecs.umich.edu (Spencer W. Thomas) writes:

    For example, if you had an 8-bit imput image and 2 4x4 cells,
    one all black and one all white, in the code book, then your
    compression ratio would be 512:1, because 512 (4x4x8) bits in
    the input give you one bit in the output (either black or white).

not to rain on your parade, but when i multiply 4x4x8, i get 128.
perhaps you meant 8x8 cells?
--

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kirk johnson                                                    `Eat blue dogs
tuna@masala.lcs.mit.edu                                          and dig life.'