[Octave-bug-tracker] [bug #39249] imread and 32 bit (float) TIFF images

[Carnë Draug]

Follow-up Comment #2, bug #39249 (project octave):

That's interesting. My build of GraphicsMagick (quantum 32) reports a depth of
32. So apparently there's no way to find out the actual bit depth of an image,
the value reported is capped by the build.

I think the problem of incorrectly identifying images with only two values as
logical can be fixed. The issue seems to come from using modulusDepth()
instead of depth(). And at first glance, implementing the reading of floating
point images seems to not be a lot of trouble.

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