Can't read 12-bit TIFF

Reported bugs that have been closed and/or resolved

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Mapaler
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Can't read 12-bit TIFF

Post by Mapaler » Thu Nov 05, 2015 9:44 am

I scientific research sectors, some device often detected grayscale image more than 8-bit.
My operate equipment detected 14-bit gray-scale images, but the software will promote output to 16-bit , therefore XnViewMP can displays (automatically convert to 8-bit).
Today I get some special images, Windows XP's Photo Viewer can't open them. So I copy them to my PC, and try to convert them to other format by XnViewMP.
But I found ↓
Windows Photo Viewer(Win7 veision)、Paint(Win7 veision)、IrfanView(4.4 64bit)
They can show 12-bit TIFF, but XnViewMP 0.76.1 don't display correctly (Identified as 8-bit)
Image

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xnview
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Re: Can't read 12-bit TIFF

Post by xnview » Thu Nov 05, 2015 10:00 am

please send me the file
Pierre.

Mapaler
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Re: Can't read 12-bit TIFF

Post by Mapaler » Thu Nov 05, 2015 11:03 am

xnview wrote:please send me the file
TIFF is too large, there can only upload 1 file.
Attachments
30+J.zip
File1
(1.84 MiB) Downloaded 64 times

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xnview
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Re: Can't read 12-bit TIFF

Post by xnview » Fri Nov 06, 2015 10:53 am

See Issue 743 for current status and details.
Pierre.

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helmut
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Re: Can't read 12-bit TIFF

Post by helmut » Thu Mar 02, 2017 5:11 pm

xnview wrote:See Issue 743 for current status and details.
I've just downloaded the image and tried in XnView v0.84. The image is displayed in XnView MP and looks correct to me. I'd say the bug has been fixed.

In "Properties" dialog, XnView says "# of bits": 8 on tab "Properties". On tab "ExifTool" it says "Bits per Sample": 12.

@Pierre: Is this correct?

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Re: Can't read 12-bit TIFF

Post by xnview » Fri Mar 03, 2017 7:36 am

helmut wrote: In "Properties" dialog, XnView says "# of bits": 8 on tab "Properties". On tab "ExifTool" it says "Bits per Sample": 12.

@Pierre: Is this correct?
yes, the picture is converted in 8 bits per component
Pierre.

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helmut
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Re: Can't read 12-bit TIFF

Post by helmut » Fri Mar 03, 2017 8:07 am

xnview wrote:... yes, the picture is converted in 8 bits per component
O.k..

:arrow: Closed (Please post here in case the problem should still occur.)

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