[Magick-bugs] Re: [magick-users] A grid appears when resizing. It wasn't invited. (Bug?)

[Ashley M. Kirchner]

Seth Price wrote:
> The output is black. The problem goes away when you compile with the 
> quantum set to 16. I've tried this on both my and my wife's computers 
> with the same result.
>
> Can anyone verify? Thoughts?
> ~Seth

    I have: Version: ImageMagick 6.3.3 04/15/07 Q16 
http://www.imagemagick.org

    Running convert on the TIFF to PNG produces a black image.  However, 
it also produces the following errors:

convert: N048W093.sm.tif: unknown field with tag 33550 (0x830e) 
encountered. `TIFFReadDirectory'.
convert: N048W093.sm.tif: unknown field with tag 33922 (0x8482) 
encountered. `TIFFReadDirectory'.
convert: N048W093.sm.tif: unknown field with tag 34735 (0x87af) 
encountered. `TIFFReadDirectory'.
convert: N048W093.sm.tif: unknown field with tag 34737 (0x87b1) 
encountered. `TIFFReadDirectory'.


    Now, I noticed your original TIFF is not in RGB color space, but 
Indexed.  I re-saved it out as an RGB file (Photoshop) and then re-ran 
the convert command.  This time I got no errors and the PNG file wasn't 
black...it was what I would expect it to be, the actual image.

    Just in case the IM team needs more info...


-- 
H | It's not a bug - it's an undocumented feature.
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