Rob Jenkins (robj++at++sgi.com)
Thu, 10 Jun 1999 01:40:23 -0700
http://www.sgi.com/grafica/merge/index.html
I'm not sure if the code he uses is around.
Cheers
Rob
Angus Dorbie wrote:
>
> You need to go from x to theta and develop an image where image y =
> constant elevation (and maybe increases linearly with elevation angle)
> and image x = constant azimuth and definitely increases linearly with
> azimuth.
>
> Gurrently x =x on constant x plane and y = y on constant z plane.
>
> So you need x = arctan x/z and y = arctan y/z.
>
> You will then be able to slide the images to make a panorama.
>
> You'll see a significant pincusion effect but the images will match. You
> can then crop for a smooth border.
>
> Cheers,Angus
>
> Thom DeCarlo wrote:
> >
> > Hi all, (especially Angus ;-)
> > I'm trying to generate an image panorama by merging screen grabs from a
> > performer app (position viewer, snap a frame, rotate viewer about the up
> > vector, snap next frame, ...).
> > I know that I'll need to remap the image (shorten the 'y' as the 'x'
> > moves away from the center of the image) to make the adjacent images
> > overlap properly. Does anyone have a formula for this remapping?
> >
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-- ________________________________________________________________ Rob Jenkins SGI Graphics Consulting Tel 0118 925 7621 mailto:robj++at++sgi.com http://www.sgi.co.uk
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