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GIMP won't load LARGE TIF file

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GIMP won't load LARGE TIF file lkraemer 07 Mar 20:45
  GIMP won't load LARGE TIF file Tobias Jakobs 07 Mar 21:04
   GIMP won't load LARGE TIF file lkraemer 08 Mar 20:59
    GIMP won't load LARGE TIF file Sven Neumann 08 Mar 21:21
  GIMP won't load LARGE TIF file GSR - FR 07 Mar 21:38
lkraemer
2010-03-07 20:45:09 UTC (almost 15 years ago)
postings
3

GIMP won't load LARGE TIF file

I had some plans scanned at Zephyr Printing. They scanned the Large drawings at 600DPI, 1 Bit Black, and saved the files. The pixel sizes of the drawings are 21600 x 33184. The files also have the Fax Group 4 designation.

I can't load these drawings into Gimp 2.6, or view them with any Ubuntu Software. I have used Irfanview to view them, so at least I can rename each file according to what is located inside the file.

Has anyone had trouble using with such a large sized file?

Any help would be appreciated.

Thanks.

lk

Tobias Jakobs
2010-03-07 21:04:30 UTC (almost 15 years ago)

GIMP won't load LARGE TIF file

Hi,

On Sun, Mar 7, 2010 at 20:45, lkraemer wrote:

I had some plans scanned at Zephyr Printing.  They scanned the Large drawings at 600DPI, 1 Bit Black, and saved the files.  The pixel sizes of the drawings are 21600 x 33184. The files also have the Fax Group 4 designation.

Can you upload somewhere such a file? Which operating system do you use?
Which exact Gimp version do you use? Are there any warnings or errors?

Regards, Tobias

GSR - FR
2010-03-07 21:38:25 UTC (almost 15 years ago)

GIMP won't load LARGE TIF file

Hi,
forums@gimpusers.com (2010-03-07 at 2045.09 +0100):

I had some plans scanned at Zephyr Printing. They scanned the Large drawings at 600DPI, 1 Bit Black, and saved the files. The pixel sizes of the drawings are 21600 x 33184.

[...]

Has anyone had trouble using with such a large sized file?

IIRC GIMP uses 5 bytes minimum per canvas pixel: 1 selection + 4 RGBA projection. So 21600 * 33184 * 5 = 3583872000, over 3GB just to show the image.

This is without counting the real pixel data, I do not rememember which happens with paletized or grey images, they could use 1 byte per pixel of the single layer or require expansion to 3-4, so the real number could be >5GB (if someone uses this formula for other images, in multilayer case, add the pixels each one use, obviously).

Which means you need a 64 bit computer and OS, a lot of memory and a really fast memory bus... and based in comments of a person than regularly works with 10000 pixel images, a lot of patience too (6 "patiences", as your case is 6 times bigger). Maybe GIMP is not the tool you need.

GSR

lkraemer
2010-03-08 20:59:39 UTC (almost 15 years ago)
postings
3

GIMP won't load LARGE TIF file

Tobias,
Here are the answers to your questions.

Can you upload somewhere such a file?

An incomplete scanned file, which is a bit larger has been uploaded here:
http://www.filefactory.com/file/b08c72g/n/Temp00395.Tif

The file size is 3.72 Meg and Pixel size is 21600 x 36000 at 1BPP.

Which operating system do you use?

Ubuntu 9.10 32 Bit with all the latest updates & Gnome Desktop.

Which exact Gimp version do you use?

GIMP Ver 2.6.7 included with Ubuntu Install ISO.

Are there any warnings or errors?

No Warnings or errors, but the screen does go dim and GIMP just hangs, eventually wanting a FORCED Quit.

I have installed Irfanview in WINE 1.0.1. I have just tried opening this file in Irfanview 4.23, then saving it to Temp00395a.Tif, and then I can load this new saved Tif in Gimp Ver 2.6.7......but it takes forever.

Computer is a Compaq Laptop CQ50-139NR with Core II Duo with 3 Gig RAM and 500 Gig Drive, with Ubuntu on a 127 Gig Partition.

Thanks.

lk

Sven Neumann
2010-03-08 21:21:07 UTC (almost 15 years ago)

GIMP won't load LARGE TIF file

On Mon, 2010-03-08 at 20:59 +0100, lkraemer wrote:

An incomplete scanned file, which is a bit larger has been uploaded here:
http://www.filefactory.com/file/b08c72g/n/Temp00395.Tif

The file size is 3.72 Meg and Pixel size is 21600 x 36000 at 1BPP.

Which operating system do you use?

Ubuntu 9.10 32 Bit with all the latest updates & Gnome Desktop.

Which exact Gimp version do you use?

GIMP Ver 2.6.7 included with Ubuntu Install ISO.

Are there any warnings or errors?

No Warnings or errors, but the screen does go dim and GIMP just hangs, eventually wanting a FORCED Quit.

I have installed Irfanview in WINE 1.0.1. I have just tried opening this file in Irfanview 4.23, then saving it to Temp00395a.Tif, and then I can load this new saved Tif in Gimp Ver 2.6.7......but it takes forever.

You've read the answer in this thread that explains why this is happening, didn't you?

Sven