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Date Posted: 01:13:50 05/26/00 Fri
Author: Scott
Subject: Re: DeSkew faxes and scans
In reply to: Michel 's message, "Re: DeSkew faxes and scans" on 07:25:45 05/25/00 Thu

thanks for the response. I had a feeling you were going
to tell me something like this... I'll keep looking or find a workaround of some sort.
thanks again.

> Dear Scott,
> Envision will not be able to help you with deskewing.
> Deskewing is relatively complex, and this is not a
> planned enhancement for the short term.
> If you want to get your hands dirty, the book,
> Algorithms for Image Processing and Computer Vision,
> by James R. Parker, has some algorithms for deskew,
> but it it quite involved and requires university level
> mathematics.
> I have seen some twain add-on (I think it is called
> ScanFix) that can perform deskewing while scanning
> images.
> If this is important to you, your other option would
> be a high end tool kit like LeadTools.
> Best regards,
> Michel
> > I am trying to evaluate Envision for a system I'm
> > developing that processes scanned and faxes forms. I
> > have two specific needs:
> >
> > 1) To be able to rotate images 180 degrees.
> > 2) To be able to deskew images of forms which have
> > been fed
> > in at a slight angle.
> >
> > these processes will need to run programmatically ie,
> > without manual intervention.
> >
> > I can detect the need for the rotation with my system
> > and
> > it appears that the existing rotate transform will
> > easily handle that. I'm less sure about the skew
> > issue.
> > Is it possible to put together some combination of
> > existing transforms that will detect and then correct
> > the skew condition? Any thoughts or suggestions will
> > be greatly appreciated. It looks like envision is a
> > great tool!
> > thanks
> > Scott Curry

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