[sane-devel] Out of Memory error when scanning at high DPI

[Gerard Klaver]

On Thu, 2006-11-16 at 09:13 -0500, Mark Richards wrote:
> Hi,
> I have an Epson Perfection Photo 4990 (GT-X800) scanner connected by
> USB to my PC (Athlon 64 3200 1GB ram 5GB swap, FC5).
> 
> scanimage --version : scanimage (sane-backends) 1.0.18 ; backend
> version 1.0.18
> 
> Scanimage -L : device `epson:libusb:002:009' is a Epson GT-X800
> flatbed scanner
> 
> I can scan fine at 1200dpi (16-bit colour) or 2400 (8-bit colour) but
> when I try to scan at anything higher I get an Out of Memory error.
> It is my understanding that scanning at 4800dpi should be possible
> with this scanner.  Any suggestions? 
> 
> Thanks,
> 
> Mark
> 
With export SANE_DEBUG_EPSON=255
and then start scanimage, check the logs for some info,

For a A4 300dpi (24 bits, 8 bits per color) scan you get about 25Mbyte
of data, for 600dpi about 100Mbyte, for 1200dpi about 400 Mbyte, for
2400dpi about 1600Mbyte.

-- 
--------
m.vr.gr.
Gerard Klaver