Hi Alessandro, Am Mittwoch, 6. Januar 2010 schrieben Sie: > On Tue, 5 Jan 2010 20:29:40 -0500 > > "m. allan noah" <kitno455 at gmail.com> wrote: > > I cannot comment on the specific limitations of this scanner, but this > > kind of issue used to be common, but now only happens with cheap > > scanners. The machine's RGB channels are not read from the same row at > > the same moment. Rather, they are offset by some number of lines. So, > > the driver might have to scan some extra, and throw it away, and > > descramble the rest. > > I believe Allan is right. Rainer, did you tried with > the "epson" driver?
I had the same thought :-) The git version von epson has the same issue. The 6510000 bytes correspond to 1750 lines. rd at dell:~$ scanimage -d 'epson:libusb:001:003' --mode='Color' -y 297 -l 0 --resolution='150' -x 210 -t 0 -v > test150-epson.pnm scanimage: scanning image of size 1240x1754 pixels at 24 bits/pixel scanimage: acquiring RGB frame scanimage: min/max graylevel value = 38/255 scanimage: read 6510000 bytes in total rd at dell:~$ convert test150-epson.pnm test150-epson.png convert: unable to read image data `test150-epson.pnm'. convert: missing an image filename `test150-epson.png'. rd at dell:~$ pnmtopng test150-epson.pnm > test150-epson.png pnmtopng: EOF / read error reading a row of pixels rd at dell:~$ I uploaded debug output (SANE_DEBUG_EPSON=3, when logging the entire image data upload takes a long time) to http://bokomoko.de/~rd/test150-epson.dbg Any insight what is going wrong is welcome :-) Thanks, Rainer -- Rainer Dorsch L?rchenstr. 6 D-72135 Dettenhausen 07157-734133 email: rdorsch at web.de jabber: rdorsch at jabber.org GPG Fingerprint: 5966 C54C 2B3C 42CC 1F4F 8F59 E3A8 C538 7519 141E Full GPG key: http://pgp.mit.edu/ -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 197 bytes Desc: This is a digitally signed message part. URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20100106/18d0992a/attachment.pgp>
