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Date: Fri, 21 Nov 2008 12:49:46 -0600 (CST)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Kevin Myers <kmyers1@clearwire.net>
Subject: Re: [Tiff] 24 bit Color to 8 bit Palettized Conversion Utility
	(tiffcp enhancement/variation?)
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On Fri, 21 Nov 2008, Kevin Myers wrote:
>
> I'm looking for a command line utility with a version that runs 
> under Windows which can convert a 24 bit color TIFF image to an 8 
> bit palettized TIFF image.  But I need something that works similar 
> to tiffcp that does the processing without loading the whole image 
> into memory at once.  I am aware of the very useful GraphicsMagick 
> and ImageMagick utilities, but they both load the whole image into 
> memory, which can be quite slow and somewhat problematic for some of 
> the extremely large images that I work with.

Did you try VIPS?  VIPS is able to accomplish many things without 
loading the whole image into memory and it is usually quite fast.  I 
don't know if its color reduction works without loading the whole 
image though since that would require a several-pass algorithm.

   http://www.vips.ecs.soton.ac.uk/index.php?title=VIPS

VIPS usage is more arcane than ImageMagick or GraphicsMagick, but it 
does succeed where other software falters.

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

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