On Thu, Aug 14, 2008 at 12:54 AM, Martin Langhoff

 wrote:

quoted text
> On Thu, Aug 14, 2008 at 3:26 AM, David Tweed  wrote:

>> FWIW, PDF format is a mix of sections of uncompressed higher level

>> ASCII notation and sections of compressed actual glyph/location data

>

> The PDF spec allows compression of the "text" sections - if a PDF is

> uncompressed, it's a good candidate for delta & compression.

> Unfortunately, within the same file you might have an embedded JPEG.

Sure, all I was pointing out was that even pdfs with compressed page

contents can look like uncompressed text from looking at the entropy

of the first 4k or 8k.
--

cheers, dave tweed__________________________

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Rm 124, School of Systems Engineering, University of Reading.

"while having code so boring anyone can maintain it, use Python." --

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