[Image-SIG] Fwd: Inverse of QUAD transform?

[Laura & Edward Cannon]

---------- Forwarded message ----------
From: Laura & Edward Cannon <cannon.el at gmail.com>
Date: Fri, Nov 27, 2009 at 11:48 AM
Subject: Re: [Image-SIG] Inverse of QUAD transform?
To: Mark Wendell <mark.wendell at gmail.com>


there is a (undocumented) perspective method that might do what you
want. as I recall
http://mail.python.org/pipermail/image-sig/2005-February/003198.html
is the documentation. There is not an anti-quad however.

On Fri, Nov 27, 2009 at 9:50 AM, Mark Wendell <mark.wendell at gmail.com> wrote:
> The docs say that the QUAD image transform takes a quadrilateral
> defined by an 8-tuple, and transforms it to a rectangle of the
> provided 'size'.
>
> I need the inverse of that: I need to take a rectangular region, and
> warp it to an arbitrary quad. Is there a way to do that?
>
> thanks
> Mark
> --
> --
> Mark Wendell
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>