Re: Digital De-twisting?

[P3D Michael Kersenbrock <michaelk@xxxxxxxxxxxxxxxxxx>]

> > Will one of these new whiz-bang Stereo Software packages we've heard of
> > lately allow one to easily remove rotational errors from single-camera
> > stereo pairs?
> >
> 
> IF rotation (vs general skewing) is the only significant problem, then you can
> calculate the required rotation easily if you can identify two widely
> separated references at infinity (to avoid parallax).

The program that came with Logitech's older hand-scanners was called 
"Ansel" (as I recall).  It had a feature that you would select two
points on the image with a click-and-drag (it drew a 
blinkety line for visualization).  You then selected a menu option
and it would rotate the image to make that line horizontal.  

This made skew corrections trivial to fix (and something needed with
a hand scanner).

Seems like this feature would be really nice for Photoshop or CorelPaint
to include.  Or is it there just buried somewhere?  :-)

Mike K.


P.S. - Unfortunately Ansel only handled B&W images.




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