Hi, On Tue, Sep 23, 2003 at 06:15:27PM +0100, kevin lyda wrote: > i have a packard bell diamond 1200 plus scanner. i'm scanning in a > slew of old photos at 600dpi. on parts of the picture that seem to get > more complex as the scanner goes across there seem to be weird lines.
Can you put an example of such an image on the web, please? > my theory is that since it's having to send too much data down the wire > and this is causing it to have to go back and rescan. That's true but it shouldn't cause the image to look weird. > is the solution to scan at a lower dpi or are there other options? If you use more that 8 bits/pixel, use 8 bits/pixel. Lower the resolution. Decrease the scan width. Use a fast USB controller and driver (e.g. try usb-uhci instead of uhci). If you like to edit some source code, get the sane-backends code and look at backend/gt68xx.c at the beginning: #if 0 #ifdef HAVE_SYS_SHM_H Change the 0 to 1 and conpile as usual. That may increase the speed a bit. > also, this is connected to a laptop - could it be a power issue since > the scanner is powered off usb. Maybe. You could try at a different computer or with a powered hub. However, I haven't headr about such a problem yet. Bye, Henning
