On 12/22/05, David Stevenson <david@xxxxxxxxxxxxx> wrote: > I am using tiff files that are 9000x6000 pixels black and white. > ( they are schematic drawings intended to print A0 size ) > I calculate this as just under 8meg at 1 bit per pixel, however when I > open in Gimp or Eye of Gnome they seem to use over 200meg of ram, which > pushes my 256meg Macmini into swapping and makes the files unusable. I did some tests with a 10k x 10k pixel 1 bit image on my laptop. gimp needs just over 200MB of RAM, so I guess they represent the image as 8 bits per pixel plus a bit. eog needs about 350MB, so they might be using RGBA. I maintain an image processing package called nip and it needs just over 30MB to view and manipulate the image. But it's not a paint program and can be tricky to use :-( if you're curious, you can download from: http://www.vips.ecs.soton.ac.uk/ John _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
