[sane-devel] Accessing a scanner for a different reason
rosen at nanotoon.com
Thu Aug 9 04:00:53 UTC 2007
I've recently stumbled upon the SANE libraries in an effort to gain
access to a scanner. What I would like to do, is be able to read
from a scanner, but not to create an image, but instead to pull RGB
data from a single line of scan. Meaning I only need a scan size of
1 pixel x width of scanner. Also, I don't necessarily need the
flatbed itself. Is it possible with SANE to access a scanner that
has been taken apart? I essentially need the RGB values of the
scanning head in realtime (I'm not sure what the terminology is for
the portion of the scanner that actually gets color values).
So imagine the scanner as a color sensor constantly pumping out an
array of RGB colors, where the array size is the width of the scanner.
I'm completely new to the SANE libraries, I've read the SANE Standard
and compiled the SANE libraries and I'm stuck on the fact that I
think the scanner I purchased is broken, so I'm at a halt for the
moment, but thought I could get a little more insight on my issue.
I thought my idea above could be possible using SANE for a few
reasons. If I were to write a front-end that used a scanner to scan
an area of 1pixel x scanner width per frame, and to continually scan
frames until I told it to stop, I could receive RGB data as fast as
the scanner could scan (hopefully real-time). If this can be done,
great! I need to really figure out how to write the front-end! The
only problem I see is that I'm hoping to take the scanner apart and
use just the sensor to pull data from. I noticed that some of the
SANE calls may fail if the SANE_Status is SANE_STATUS_COVER_OPEN,
which leaves me to believe I won't be able to take the scanner apart
and just pull RGB data from the scanner head.
If anyone can answer any or part of my questions or point me in the
right direction it would be greatly appreciated.
Thanks for your time.
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