two-page tiffs
On Feb 23, 2006, at 8:45 AM, Robert Citek wrote:
How does one create or save a two-page tiff with the GIMP?
The short answer, you don't (at least I couldn't figure out how). To
work around this limitation I used tiffutil under OS X. I lost some
tag information and the process is a pain in the neck, but it
worked. Command sequence on OS X:
for i in $(jot $(tiffinfo array.tif | grep -c TIFF ) 0) ; do
tiffutil -extract $i array.tif -out array.$i.tif
# resize array.$i.tif with the gimp
# save as array.$i.400x524.tif
done
tiffutil -cat array.*.400x524.tif -out array.400x524.tif
To see the smaller two-page tiff:
http://cwelug.org/~rwcitek/array.400x524.tif
400 x 524 = 0.42 MB
2738 x 3586 = 40.00 MB
That's a sizable difference.
BTW, the image is a scan from a two-color microarray scanner. The
images are scans of a glass slide with literally thousands of dots of
DNA. One image is the scan at one wavelength, while the other image
is the scan of the exact same slide at a different wavelength. Of
course, now it would be nice to take the two images, false-color one
blue, the other gold, and then overlay them. Where the dots line up
it will be green (blue + gold = green). But I don't know how to do
that, yet.
Regards,
- Robert
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