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November 2008
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2008.11.21 18:49 "Re: 24 bit Color to 8 bit Palettized Conversion Utility (tiffcp enhancement/variation?)", by Bob Friesenhahn
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/