Sign up now! · Forgot password?
RSS/Atom feed identi.ca Twitter

Problem with TIFF images in GIMP 2.8

This discussion is connected to the gimp-user-list.gnome.org mailing list which is provided by the GIMP developers and not related to gimpusers.com.

5 of 5 messages available
Toggle history

Please log in to manage your subscriptions.

Problem with TIFF images in GIMP 2.8 mauriciorubik 31 Aug 17:21
  Problem with TIFF images in GIMP 2.8 rich 01 Sep 11:28
   Problem with TIFF images in GIMP 2.8 rich 01 Sep 11:58
    Problem with TIFF images in GIMP 2.8 mauriciorubik 01 Sep 14:33
     Problem with TIFF images in GIMP 2.8 rich 01 Sep 16:55
mauriciorubik
2012-08-31 17:21:48 UTC (over 2 years ago)

Problem with TIFF images in GIMP 2.8

Hi folks, I'm trying to work with TIFF images got from Image Pro Plus but GIMP 2.8 doesn't open them, I found that's a problem related to Image Pro Plus because misses some tags. Also, I tried with ImageMagick using:

convert "prueba 1.tif" "prueba 1.png"

convert "prueba 1.tif" "prueba 2.tif"

The first works fine, just with some warnings, PNG image was created succesfully.
The second doesn't work and in any case if I do:

convert "prueba 1.tif" -identify

got:

convert: incorrect count for field "DateTime" (27, expecting 20); tag trimmed. `prueba 1.tif'.
convert: prueba 1.tif: unknown field with tag 40001 (0x9c41) encountered. `TIFFReadDirectory'.
convert: prueba 1.tif: unknown field with tag 50288 (0xc470) encountered. `TIFFReadDirectory'.
convert: prueba 1.tif: unknown field with tag 50291 (0xc473) encountered. `TIFFReadDirectory'.

Original image got from Image Pro Plus: http://uploads.boxify.me/89236/prueba_1.tif?1346433567 http://uploads.boxify.me/89236/prueba_1.tif?1346433567

Maybe you can add some support for that :)

Sorry if my english isn't good, I'm improving it.

-- View this message in context: http://gimp.1065349.n5.nabble.com/Problem-with-TIFF-images-in-GIMP-2-8-tp35287.html Sent from the Users mailing list archive at Nabble.com.

rich
2012-09-01 11:28:42 UTC (over 2 years ago)

Problem with TIFF images in GIMP 2.8

Hi folks, I'm trying to work with TIFF images got from Image Pro Plus but GIMP 2.8 doesn't open them, I found that's a problem related to Image Pro Plus because misses some tags. Also, I tried with ImageMagick using:

If you use IM identify -verbose you get

Image: prueba_1.tif Format: TIFF (Tagged Image File Format) Class: DirectClass
Geometry: 1392x1040+0+0
Resolution: 300x300
Print size: 4.64x3.46667
Units: PixelsPerInch
Type: TrueColor
Base type: TrueColor
Endianess: MSB
Colorspace: RGB
Depth: 12-bit............

AFAIK tthat is the problem, 12 bit image, I would ask on the IM forum for advice on conversion.

rich
2012-09-01 11:58:09 UTC (over 2 years ago)

Problem with TIFF images in GIMP 2.8

Hi folks, I'm trying to work with TIFF images got from Image Pro Plus but GIMP 2.8 doesn't open them, I found that's a problem related to Image Pro Plus because misses some tags. Also, I tried with ImageMagick using:

If you use IM identify -verbose you get

Image: prueba_1.tif
Format: TIFF (Tagged Image File Format) Class: DirectClass
Geometry: 1392x1040+0+0
Resolution: 300x300
Print size: 4.64x3.46667
Units: PixelsPerInch
Type: TrueColor
Base type: TrueColor
Endianess: MSB
Colorspace: RGB
Depth: 12-bit............

AFAIK tthat is the problem, 12 bit image, I would ask on the IM forum for advice on conversion.

A quick test and the absolute minimum IM command is convert prueba_1.tif -depth 8 new.tif this opens ok here in Gimp 2.8

mauriciorubik
2012-09-01 14:33:27 UTC (over 2 years ago)

Problem with TIFF images in GIMP 2.8

Francoism thank you. So, if the original image is in 12-bit depth and I want to resize it for example to 200% which commands I have to use for the best quality possible (I don't matter the time spent)

depth 8 or 16?

lanczos or mitchell?

force -quality 100?

-- View this message in context: http://gimp.1065349.n5.nabble.com/Problem-with-TIFF-images-in-GIMP-2-8-tp35287p35318.html Sent from the Users mailing list archive at Nabble.com.

rich
2012-09-01 16:55:48 UTC (over 2 years ago)

Problem with TIFF images in GIMP 2.8

Francoism thank you. So, if the original image is in 12-bit depth and I want to resize it for example to 200% which commands I have to use for the best quality possible (I don't matter the time spent)

depth 8 or 16?

lanczos or mitchell?

force -quality 100?

You can use '-depth 16' which Gimp will open (and complain about) - it makes a 48 bit image rather than 24 bit. In Gimp I use Lanczos for resizing but;

Again you will be better off asking the question in the IM forum - very clever people there. http://www.imagemagick.org/discourse-server/ in the 'users' section.