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December 2008

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2008.12.30 10:07 "scanline v/s striped", by Pundaleek Belamge
2008.12.30 10:11 "Re: scanline v/s striped", by Pundaleek Belamge
2008.12.30 16:26 "Re: scanline v/s striped", by Bob Friesenhahn
2008.12.30 16:25 "Re: scanline v/s striped", by Bob Friesenhahn
2008.12.30 16:41 "Re: scanline v/s striped", by Kevin Myers
2008.12.30 17:29 "Re: scanline v/s striped", by Pundaleek Belamge

2008.12.30 16:25 "Re: scanline v/s striped", by Bob Friesenhahn

On Tue, 30 Dec 2008, Belamge, Pundaleek wrote:
>
> I am trying to use tiffdither utility to convert 8-bit grayscale tif image
> to 1-bit bi-level tif image with CCITT Group 3 compression. I am able to
> generate the tif files but, when viewd the resulting image on Windows, the
> image viewer shows foreground and background colors reversed. What might be
> wrong?

The Windows TIFF viewer you are using is likely ignoring the TIFF 
photometric.  Perhaps it is assuming MINISWHITE but the file is using 
MINISBLACK.  Your 8-bit grayscale TIFF image was likely using 
MINISBLACK.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/