A few questions about image display

Søren Hauberg soren at hauberg.org
Fri Oct 31 10:23:49 CDT 2008


Hmm, I don't know if this bug has been fixed in the 3.0.x series then.
Does anybody know?

Søren

P.S. Please keep the list CC'ed as then others can reply as well.

lør, 01 11 2008 kl. 00:11 +1100, skrev Alasdair McAndrew:
> Thanks for your reply - I'm using version 3.0.3.
> 
> -Alasdair
> 
> On Sat, Nov 1, 2008 at 12:07 AM, Søren Hauberg <soren at hauberg.org>
> wrote:
>         fre, 31 10 2008 kl. 20:26 +1100, skrev Alasdair McAndrew:
>         > I've just started investigating octave as a possible
>         open-source
>         > alternative to Matlab for image processing, and my first
>         impressions
>         > of it are very good indeed.  However, I have some problems
>         with regard
>         > to image display, using gnuplot.  A grayscale image is
>         displayed
>         > correctly, but an RGB image is not.  If "im" is an m x n x 3
>         matrix
>         > representing the RGB image, then "imshow(im)" shows the
>         image far too
>         > bright - it has to be scaled with "imshow(im/3)".  Why?
>         
>         
>         This is a bug. I know it's fixed in the development sources,
>         but I can't
>         remember which versions of the 3.0.x series that had the bug.
>         What
>         version are you using?
>         
>         Søren
>         
> 
> 
> 
> -- 
> Blog: http://amca01.wordpress.com



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