Hi, for...@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 _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
