[vtk-developers] CVS (vtkbaseline) is huge. TIFF compression ?

[David Gobbi]

On Thu, 3 Aug 2000, Ken Martin wrote:

> A compressed TIFF reader that is "patent free" would be my first choice. a 
> PNG reader would also work out nicely. I don't know of anyone working on 
> either of those though.

The TIFF PackBits compression is patent free.  The TIFF LZW compression
is patented, but isn't part of the TIFF baseline standard and neither is
it as common as PackBits for TIFF.  I wrote a TIFF reader/writer a few
years ago that supported PackBits but I have no idea where the code is
now.  Maybe I should look through my collection of old 3.5" floppies.

 - David
 
> At 09:41 PM 8/3/00 +0200, you wrote:
> >Hi
> >
> >I tried today to write the very latest VTK CVS snapshot to a CDROM, but :
> >
> >         - VTK source : 20.7 Mo
> >         - vtkbaseline : 420 Mo
> >         - vtkdata : 228 Mo
> >
> >=> 668.7 Mo. More than one CDROM could handle
> >
> >And if you want to include the very latest documentation (with the new 
> >collaboration graphs I've added today) : 
> >ftp://sic.sp2mi.univ-poitiers.fr/pub/barre/vtk/doc/html/index.html
> >
> >         - DOC doxygen : 44.9
> >
> >=> 713.6 Mo
> >
> >I guess the next distribution will use two CDROM :))
> >
> >Or maybe has someone already considering adding compression to TIFF ?
> >
> >Basically, Packbits compression would strip down vtkbaseline from 420 Mo 
> >to 232 Mo. The whole CDROM would be 523.6 Mo, leaving spaces for the rest 
> >of the distribution (examples, documentation, images from the book, etc).