32-bit sample TIF's can't be handled

[digitalis99]

I'm trying to work with some TIFF output images from some newer render apps, and I'm having a bit of trouble. When attempting to run a simple identify -verbose someimage.tif, I get this output at the end:

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identify.exe: Sorry, can not handle images with 32-bit samples. `c:\Users\joe\Desktop\someimage.tif' @ error/tiff.c/TIFFErrors/557.

I'm running the latest IM public Windows binary, 6.9.3-8 Q16 HDRI x64 (static). I'm assuming IM simply can't work with these kinds of files yet, is that correct?

[snibgo]

IM happily reads tiff files with 32 (or even 64) bits/channel/pixel. To make effective use of them, you should use Q32 (or Q64), not Q16.

But I doubt that is the problem here. Can you upload a problem tiff and paste the link here?

[digitalis99]

There is a Q32 or Q64??? I don't see any compiled Windows binary listed higher than Q16 on the download page. Does that mean I'd have to compile my own? (Ick)

[snibgo]

Many varieties of IM are not available as pre-built binaries. 4 Q-levels, integer or HDRI, Win32 or Win64, static/dynamic/portable, so that's 48 varieties before considering the delegates.

For most purposes, Q16 (int or HDRI) is all I need. One job (for large displacements maps) needs the precision of Q32.

Building IM on Windows, using Cygwin, is easy. My "Compiling IM with Cygwin" page has the gory details.

[digitalis99]

That's not an option for me, since I'd have to have Cygwin installed and running everywhere I want to run the binary. Anyone know if there are third-party compiled binaries somewhere?

[fmw42]

see http://web.archive.org/web/201109210047 ... /binaries/ for very old ones. Sorry I do not know of any current archives for Windows other than the IM binaries and source files. You could build your own binary from source.

[digitalis99]

Ahh...nothing more than a bunch of older Q8 and Q16 stuff there.

[fmw42]

IM 7 has now been release and has Windows binaries for Q16 HDRI. See http://www.imagemagick.org/script/binar ... hp#windows.

Also see TIFF format -defines at http://www.imagemagick.org/script/formats.php and at http://www.imagemagick.org/script/comma ... php#define

In particular, the section on -define quantum:format=type

[digitalis99]

So, are you trying to say that I have to specify additional command line switches when I run identify? Doesn't that negate the primary purpose of running identify at all?

[snibgo]

As I said earlier:

Can you upload a problem tiff and paste the link here?

[fmw42]

Just saying to use IM 7 to get a Q16 HDRI install.

[digitalis99]

Just saying to use IM 7 to get a Q16 HDRI install.

Tried that, throws the same error message.

As I said earlier:

Can you upload a problem tiff and paste the link here?

Yep, give this a shot:

www.kostov.com/IM/32biterror.tif

[snibgo]

In various versions of IM, including Q32 and Q64 HRDI, "identify" is misreading this file, reporting it as "bilevel", with the error:

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identify: Sorry, can not handle images with 32-bit samples. `32biterror.tif' @ error/tiff.c/TIFFErrors/582.

The image shows with no problem in Microsoft Photo Viewer.

A developer needs to look at the file. Perhaps it is corrupt, or contains a feature that IM can't handle.

[memy_007]

Hi! I'm new here, I have the same problem and I wonder if you could solve your problem, if you did you tell me how you did it?

[snibgo]

@memy_007: upload your problem file and paste your link here.