Hey!  It's not too difficult!!  I can see how this would be useful to chop out lots of ugly window violations, and add some additional 3D dazzle to a view.  Here is my take on the process:
First I aligned the 2 views in SPM, putting my main subject where I wanted it within the window.  Then in Photoshop I opened the 2 views, and selected an area.  This example was an oval, but I also drew free-hand areas, and polygon shapes that worked perfectly too.  I skewed the selection in one direction in the left chip, and skewed the selection in the other direction in the right chip.  Voila!  You can make it lean in, out, sideways, and as far as the photo allows.
Your goal was not to impress with the frame, but that was the goal of my exercise this morning...so please excuse my wild use of the technique just this one time!
How did you make the boarder around your 3D window?  I have not figured that one out yet...
Thank you so much for cluing me into this trick!

Ian



--- In anaglyphs(-at-)yahoogroups.com, Mike Beech <beech1943(-at-)...> wrote:
>
> Thanks, Ian.
>   
>   I use Adobe Photoshop only. Currently version CS3, but any version from 7 on works great. There are many techniques being used to produce the total effect. The basic concept is to make the border part of the image by masking one image so that its left border leans one way and the left border of the other image leans the other way. This provides offset, and thereby depth, to the border itself.
>   
>   My goal with the frame manipulation is not to impress with the frame, but to bring the image forward and thereby reduce ghosting while simultaneously avoid the horrid and pointless window violations that are so often seen in anaglyphs when that trick is employed.
>   
>   Because the various techniques, those shown in this image and many, many others, are too time and space consuming for me to to present here, I have compiled it all into one document which I provide on CD as The Digital Stereo Tutorial, a 130 page book on CD. For information, contact me at PhotosN3D(-at-)...
>   
>   In it I cover everything from how I do my 2D to 3D conversions, to frame manipulation magic, and everything in between, starting with how to properly align images in Photoshop and SPM. There are five years of education in the CD, gleaned from 5 years of following online groups and figuring out how things are done.
>   
>   Thanks, again, and I'm glad you liked the result.
>   
>   Mike Beech
>  
> Ian Straffin <ian5281(-at-)...> wrote:
>           Very nice manipulation of the window. I'm impressed! Can I ask what
> tools you are using? Do you have some suggestions/tips/pointers as to
> how we could apply such a technique?
>
> --- In anaglyphs(-at-)yahoogroups.com, Mike Beech <beech1943(-at-)> wrote:
> >
> > A number of subtle changes were made to the image based on the great
> feedback I received.
> >
> > Thanks.
> >
> > Mike Beech
> >
> >
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