OT: fitting a plane model to 2d points 2003-12-04 - By pat hammond
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thanks :) good luck!
it seemed straight-forward enough to me at first but after getting some
nasty trig flashbacks I had to quit.
-- --Original Message-- --
From: dir3d-l-bounces@(protected)
[mailto:dir3d-l-bounces@(protected)] On Behalf Of Danny
Kodicek
Sent: 04 December 2003 15:06
To: dir3d-l@(protected)
Subject: Re: [Dir3d-l] OT: fitting a plane model to 2d points
> thanks Danny, I've got around this problem using quads & the
> mapMemberToStage function which was one of those really useful
> commands I never knew existed but just seem to materialise to save the
> day. the problem still remains an interesting one and could be a good
> exercise in something. sorry, I didn't explain it too well before:
> imagine having a plane of known size, now rotate this randomly on all
> axis & take a photo of it. is it possible, just by having this photo
> (2d
> version) of the plane to reconstruct it in 3d, given the corner x,y
> co-ords, length of all sides & the field of view of the camera?
> just curious :)
The answer is definitely yes: you have more than enough information
there to reconstruct the rectangle. I've got an hour and a half's train
journey later this afternoon, so I might see if I can doodle out a
solution, I'm sure it's not too hard.
Danny
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