[magick-users] histogram and PerlMagick

[Brian Jackson]

On Wednesday 01 November 2006 17:41, Ron Savage wrote:
> Hi Brian
>
> > Think 'levels' from The GIMP or Photoshop.
> > Here is what I'm looking for (obviously an underexposed image :)
> > http://brianjacksonphoto.com/histogram
>
> That helps. Do you know what the horizontal and vertical axes units
> are? 

No, sorry I don't, the examples are the output from IM :)

version 5
convert image.jpg -channel red histogram:-|convert - red.png

version 6
convert image.jpg -channel R -separate histogram:-|convert - red.png

I'm just trying how to get these images as a blob that perl/Tk will 
understand.

thanks,
brian

-- 
Brian Jackson
Action Athletics Sports Photography
brian at actionathletics.com
http://www.ActionAthletics.com/