[ptx] Multi-layer TIFFs on OS X

[Pablo d'Angelo]

Ian Wood schrieb:
> After some discussions on the PTAssembler forum, i discovered that 
> multi-layer TIFF output just renders the relevant part of each output 
> image, saving on file size and resource usage.
> 
> Is there any easy way on OS X to split this file up for use with 
> Enblend? Preview recognises all the layers but can't save individual 
> ones, and anyway doesn't recognise any offset info that would be  needed
> to pad out the canvas.

hugin 0.5 will contain the option to create these cropped tiff output
tiff files directly (code is already in the CVS). Using tiffsplit is
then no longer needed.

Unfortunately, enblend has a bug when reading the offset information
from the tiff. Its just a two line change in enblend and I hope that
enblend 2.4 is released together with hugin 0.5.

I'm also thinking about creating a text file where this information is
stored. Something like this:

------------------------
1000 500 # output image size
0 0 remapped_0000.tif
0 200 remapped_0001.tif
400 0 remapped_0002.tif
400 200 remapped_0003.tif
------------------------

This may be useful for other software, or scripts which cannot read the
tiff position tags easily (Or when other image formats are used).

ciao
 Pablo