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Re: Counting Unique Colours

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Re: Counting Unique Colours

Subject: Re: Counting Unique Colours
From: Richard Wagner <email@hidden>
Date: Tue, 16 Jan 2007 23:06:02 -0700

On Jan 16, 2007, at 10:24 PM, email@hidden wrote:

I need to work out the total number of unique colours in some TIFF
images. Does anybody have any links to command line utils that can do
this? Or, better still, some code that can do achieve this using Core
Image or Quartz Composer?

The old OS9 app Levels 1.2 by Bruce Lindbloom will do this, but it's not command-line driven, and Bruce has no plans to release an OSX version. It works with grayscale, RGB, CMYK, Lab or PhotoYCC (i.e. Photo CD) color types. and both 8 and 16-bit files. LZW not supported.


--Rich Wagner
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