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Re: Problems reading photo input
From: |
Stefan van der Walt |
Subject: |
Re: Problems reading photo input |
Date: |
Tue, 21 Mar 2006 19:07:05 -0600 |
User-agent: |
Mutt/1.5.9i |
On Mon, Mar 13, 2006 at 10:34:54AM -0700, Joe Koski wrote:
> Now that the image processing routines appear to be working via
> ImageMagick-6.2.6, I thought I'd try some tests. I'm using octave-2.1.72
> with octave-forge-2006.01.28 on my Mac with OS X 10.3.9.
>
> There seems to be a problem with imread. For example, if I
>
> octave:1> pix=imread("Full-fire-later-2.tiff");
>
> I get a 3D array of the appropriate size
>
> octave:2> size(pix)
> ans =
>
> 1032 689 3
>
> but most of the elements of the pix matrix are numerically equal to 255
> (except for a few that are zero). This occurs with 2D gray scale images,
> color images, .jpg, .ppm, .tiff, etc. The resulting image.m output displays
> an appropriately uniform image (black, white, or a single color).
I submitted a patch to work around this problem two weeks ago. I
haven't had time to debug the imagemagick wrapper, though.
See the bug report at
http://sourceforge.net/tracker/index.php?func=detail&aid=1439598&group_id=2888&atid=102888
Further discussions of this problem should probably take place on the
octave forge list (address@hidden).
Regards
Stéfan
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