Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
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Jimbo wrote:And, if so, is there any flag that I need in order to create TIFF64 as opposed to TIFF?
Use the prefix "TIFF64:" on the output.
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Thanks, fmw42 and snibgo!
Testing TIFF64 now, and yes, it is supported in libtiff 4.0.10_1 (which I am using), and I believe, supported since libtiff 3.8.2.
50000 x 28125 @ dpi90 tiff file = 16.88 Gbytes
converted from .PSB file with this call:
magick in.psb -define quantum:"format=floating-point TIFF64:out.tif
And the original PSB file was a 32bit floating point image with colors over 1 (up to 1.6414 RGB values)
and the resulting TIFF64 (eg. BigTIFF) image kept all of that with it.
FYI: Photoshop reads the BigTIFF format about 4 times faster that it's own .PSB Large Format Filetype.
SWEET! Thank you, one and all (magick, fmw42 and snibgo) for helping me get to this solution.
PS- I will be posting what I know about the psd and psb issues concerning HDRI imagery in the Developers Forum. - J