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 TIFF files that won't read

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sbussinger Posted - Jun 17 2011 : 11:49:07
I'm a long time user of ImageEn with an application currently using version 3.1.1. For the first time, I've got a user that has a bunch of TIFF files that I can't read.

I tested them using the PhotoEditor demo application I just downloaded from here and the results are strange, the OpenFile dialog preview shows the contents, but when I click OK, I don't actually see anything. When I select File|Properties in the demo it displays a dialog that says 0x0 pixel, 24 bit color, 444KB size, and 300x300 dpi.

Windows 7 shows the image natively just fine. Properties in Windows 7 shows 96x96 dpi, 816x1056 pixels, 96 dpi, and 32 bit color.

I'm afraid it's a medical image so I can't give you a copy of the file to look at. If I "recreate" the image by printing it to a file or loading it into Paint and saving it again, that new version works fine so I don't have any way to sanitize the file without eliminating the problem.

Any thoughts would be appreciated!
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fab Posted - Jun 17 2011 : 13:08:21
Unfortunately without an image to test I cannot help. Consider that the preview tries to read a thumbnail if present, so maybe ImageEn can only read the embedded thumbnail and fails to read the actual image.
Anyway try this:
1) load the image using LoadFromFileAuto
2) maybe the image is a raw file. Install the dcrawlib and try to open using LoadFromFileRAW
...3) send a copy of the image to xequte...
sbussinger Posted - Jun 17 2011 : 12:00:08
I just noticed that in the Windows 7 properties dialog, in the Details tag, that the only information it lists is:

  • Dimensions: 816x1056

  • Width: 816 pixels

  • Height: 1056 pixels

  • Horizontal resolution: 96 dpi

  • Vertical resolution: 96 dpi

  • Bit Depth: 32

  • Compression:

  • Resolution unit:

  • Color representation:

  • Compressed bits/pixel:


Note that all of the last ones are blank, which isn't typical of other TIFF images I've checked. Hopefully this will mean something significant to someone!

Thanks!