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From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Andrey Kiselev <andrey.kiselev@gmail.com>
Subject: Re: [Tiff] dpi settings
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On Sun, 9 Dec 2007, Andrey Kiselev wrote:
>
> For me centimeter unit is quite inconvenient for the image processing
> related usage. I like mm.

It seems that the best unit to use depends on what is being measured 
and the intent of the measurement.  For example, if the TIFF file 
represents a satellite image covering a large expanse of the earth, 
and it is desired to specify the actual resolution, units of 
millimeters would be inconvenient.  Perhaps meters or kilometers would 
be more convenient.  If an image is from a microscope, perhaps 
nanometers or micrometers would be more convienient.

Use of resolution for publishing purposes is likely to be considerably 
different than use of resolution for a scientific purpose, or if the 
image represents film.

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

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