Groups > comp.graphics.apps.gnuplot > #2024

Extract RGB values from image

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From	Ingo Thies <ingo.thies@gmx.de>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Extract RGB values from image
Date	Mon, 09 Sep 2013 15:18:46 +0200
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Hi all,

I am trying to extract RGB values from images via binary input and "set
table":

set table 'testimage.asc'
plot 'someimage.jpg' binary filetype=jpg with rgbimage
unset table

However, gnuplot refuses to write out the RGB values, and instead I only
get something like

# x y type
 0  276  i
 1  276  i
 2  276  i
 3  276  i
 4  276  i
 5  276  i
 6  276  i
 7  276  i
 8  276  i
...

Is there a way to write out the RGB values (maybe as hex strings) for
each pixel?

Best wishes,

Ingo

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Thread

Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-09 15:18 +0200
  Re: Extract RGB values from image sfeam <sfeam@users.sourceforge.net> - 2013-09-09 10:18 -0700
    Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-11 11:39 +0200
      Re: Extract RGB values from image sfeam <sfeam@users.sourceforge.net> - 2013-09-11 11:08 -0700
        Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-11 21:36 +0200
          Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-16 09:02 +0200

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