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Date Posted: 21:43:01 12/07/03 Sun
Author: Michel
Subject: Re: TIFF G4 File structure different
In reply to: Gurkan Karagoz 's message, "TIFF G4 File structure different" on 09:27:53 12/03/03 Wed


Hi Gurkan,

I don't know if I can help much on this. Envision uses the very popular libtiff library, www.libtiff.org. For sure, Kodak does not use libtiff. I think MMR is the same thing as group IV tiff compression, but I am not sure. Did you bring this up with Lizardtech and see if there is an issue there.

Best regards,

Michel


>Hi Michel,
>I am using Envision 1 for more than 2 years. I can't
>use version 2, because I did too many modifications on
>the version I have.
>
>You might be heard about the DjVu image format of
>Lizardtech. You can convert bitonal tif files into Djv
>files with Lizardtech's software. That software
>converts most of the envision produced tif G4 files,
>but some big G4 files are not acceptable. The software
>says, "Error: Invalid G4/MMR Data"
>I can open those defective TIF G4 files by any tif
>viewer. This shows that Envision produces regular G4
>files. I think the problems comes from Djvu encoder.
>
>On the other hand, I created a simple bitonal BMP file
>and saved as TIF G4 by Kodak Imaging and Envision.
>They are different..! Why are those tif files
>different?
>Do you know the meaning of "MMR Data" on the G4 files?
>
>I have two huge TIF files (2MB), one from kodak, one
>from envision. Do you want to see them? I will post
>you.
>
>Thanks

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