[vtkusers] vtkTIFFReader

[Bill Lorensen]

Roger,

If you have itk built, try to read the file. I made several changes in
the itkTIFFImageIO class over a year ago:

BUG: inappropriate use of long and unsigned long. On 64 bit systems,
these may be 8 bytes long. The tif library does not read 8 byte
fields. It defines uint32 and int32 to be int's on 64 bit systems.

http://public.kitware.com/cgi-bin/viewcvs.cgi/Code/IO/itkTIFFImageIO.cxx?root=Insight&r1=1.57&r2=1.58

It looks like vtk has these changes, but there are other differences
in how the two handle tiff images.

If you don't have an itk build, perhaps you can send Sean a sample
image and he can try to read it with ITK.

Bill

On Tue, Apr 7, 2009 at 1:07 PM, Robert Haines <rhaines at manchester.ac.uk> wrote:
>
> On 7 Apr 2009, at 15:15, Sean McBride wrote:
>
>> On 4/7/09 9:12 AM, Robert Haines said:
>>
>>>> I've tried to build vtk with the system's libtiff.so (which is 3.8.2)
>>>> but this didn't change anything.
>>
>> VTK is also using 3.8.2.  So it could still be a bug in libTIFF 3.8.2.
>>
>>> I would have thought that 64bit
>>> machines have been around for long enough now that it shouldn't be a
>>> 64bit issue though!
>>
>> On Mac OS X with gcc, libTIFF does not even compile without warning in
>> 64 bit.  A 64 bit bug would not surprise me at all.
>
> Ah. Well I'm ever the optimist! :-)
>
> In Ubuntu 8.04 GIMP does not link against libTIFF so GIMP may well have its
> own TIFF code that works better.
>
> Can you load these TIFFs with ImageMagick? The program to use is called
> display and does link against libtiff on my system.
>
> Cheers,
> Rob
>
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