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From: "Christian " <christian_zepeda_e@yahoo.com.ar>
Newsgroups: comp.soft-sys.matlab
Subject: Detection of pixels
Date: Wed, 31 Oct 2007 21:29:09 +0000 (UTC)
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I have a picture in rgb corresponding to a map, this image
contains a lake, and I need to separate the image of water
from the rest of colors that presents the image, so as to
obtain the number of pixels corresponding to water.

Appreciate that someone might have an idea as I do not know
how to begin.