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Thank you very much for your reply . I was able to scan the page with
duplex mode .. <br>
<br>
Basically my requirement is to create a multipage image with optimum
size in tiff .<br>
<br>
I am using the following command to acheive a single tiff file from 2
tiffs. <br>
<br>
On doing so , I get this <br>
<br>
# tiffcp -c g4 img1.tiff img2.tiff img3.tiff<br>
img3.tiff: Bits/sample must be 1 for Group 3/4 encoding/decoding.<br>
img3.tiff: Error, can't write strip 0.<br>
<br>
<br>
I also used the tiffinfo img1.tiff to get the deetails of the file .<br>
[rrshah@rajeshoffice ~]$ tiffinfo img2.tiff<br>
TIFF Directory at offset 0x8 (8)<br>
Subfile Type: (0 = 0x0)<br>
Image Width: 850 Image Length: 1100<br>
Resolution: 100, 100 pixels/inch<br>
Bits/Sample: 8<br>
Compression Scheme: None<br>
Photometric Interpretation: min-is-black<br>
Orientation: row 0 top, col 0 lhs<br>
Samples/Pixel: 1<br>
Rows/Strip: 1100<br>
Min Sample Value: 0<br>
Max Sample Value: 255<br>
Planar Configuration: single image plane<br>
<br>
<br>
After searching furthure on this case , I found that the tiff files
should in Black and White ( or LineArt) .. I then used the mode but
there are only 2 modes one is gray and other is colour . <br>
<br>
Kindly help .. I am almost on the verge of getting this working .. <br>
<br>
Rajesh Shah <br>
<br>
<br>
<br>
m. allan noah wrote:
<blockquote
cite="mid:97246d0e0906210618l56a73769lb66146cd10e3a357@mail.gmail.com"
type="cite">You have told the backend (scanner driver) that you want
duplex data, but you have not told the frontend (scanimage) that it
should grab more than one page. Try this instead:<br>
<br>
scanimage -d canon_dr:libusb:002:006 --source 'ADF Duplex' --resolution
100 --format=tiff -b<br>
<br>
This will produce images in your current directory called out1.tif,
out2.tif, etc. These names can be changed, see scanimage manpage.<br>
<br>
Also, please note, that support for this machine is somewhat basic in
sane 1.0.20. In the last week I have added calibration and fixed many
bugs. I would HIGHLY suggest that you upgrade to a recent sane-backends
git snapshot, the scanner will be much more useful and the image
quality significantly improved.<br>
<br>
allan<br>
<br>
<div class="gmail_quote">On Sun, Jun 21, 2009 at 6:18 AM, Rajesh Shah
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:rajesh@finlogicindia.com">rajesh@finlogicindia.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Dear
All ,<br>
I am posting for the first time . I am not a developer . But I was
testing sane-1.0.20 backend on Canon DR-2050 C.<br>
I am using Mandriva Spring 2009.<br>
<br>
Using the following Command I am able to Scan but not able to use the
Duplex Feature . Result is single page scan similarly to ADF Front<br>
<br>
# scanimage -d canon_dr:libusb:002:006 --source 'ADF Duplex'
--resolution 100 --format=tiff > 2image.tiff<br>
<br>
Please note ,I have also tried the double quotes .ie "ADF Duplex" but
same results . Kindly guide .<br>
<br>
Even after I removed the source option , the size of the file remained
the same .<br>
<br>
I think , I am few steps away from configuring it successfully . Please
help and guide .<br>
<font color="#888888"><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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</div>
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<br>
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