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Set pixels


From: AGD
Subject: Set pixels
Date: Fri, 24 Jul 2009 05:43:35 -0700 (PDT)

Hi,

Again admitting, this question doesn't come from a novice in image
processing.

Are there any Octave commands that can set pixel values to a desired value?
My image is in true colours, and i wish to set the all the pixel values from
column 20 to 32 to a 255. How do I do that?


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