usage of Convert with huge tiff image files

[rpgomes]

Hi,

I'm trying to use Convert image.tif -thumbnail 360 image_th.tif, where image.tif have 1,7Gb and IM generate an Windows Error and aborts.
Same type of files, made on the same scanner but smaller, convert to thumbnail without problem.
I tried to apply other parameters like resize and resample, but IM returns the same error.

I tried too with other images and I only had sucess with smaller files (< ~800Mb).

Is there any known limit? What factor can be conditional to convert huge image files?
I'm using PC's with 2Gb of RAM. Is this a problem?

Thank you
Rui Gomes

[magick]

> I'm trying to use Convert image.tif -thumbnail 360 image_th.tif, where image.tif have 1,7Gb and
> IM generate an Windows Error

ImageMagick supports mega-pixel images for most formats, however, for TIFF the conversion is sometimes handled by the TIFF delegate library which may not always have methods for dealing with mega-pixel images. Try this command:

• convert -limit memory 0 -limit map 0 myimage.tiff myimage.png

If that command fails, post a URL to your image so we can download and inspect. We need to determine if the problem is with ImageMagick or the TIFF delegate library.