vijaybrd_99
asked on
Reconstruction of 3D curves from two 2D projections ...
Hi..
If I got two projections of a 3D curve on two image planes how to reconstruct the curve.Assuming we know the position and orientaion of those two iamge planes....
please respond me soon.....
vijay
If I got two projections of a 3D curve on two image planes how to reconstruct the curve.Assuming we know the position and orientaion of those two iamge planes....
please respond me soon.....
vijay
if you want this answered youi will have to provide all information.
to create the "Z" co-ordinate for 3d with only 2 2d sources available would not be to hard but it will have to intersect at some point and you will have to work out a grid for this.
Perspective will be another problem.
Try to convert you calculations so that you correct one view to being 90 degrees from reference to the other image.
to create the "Z" co-ordinate for 3d with only 2 2d sources available would not be to hard but it will have to intersect at some point and you will have to work out a grid for this.
Perspective will be another problem.
Try to convert you calculations so that you correct one view to being 90 degrees from reference to the other image.
ASKER
OeilNoir....! & netmage ...!
Thanq for ur response..
The problem is that we will be given 2d points on two image planes which are taken from two different views( may not be 90 degrees)i.e. two diffrent positions and orientaions.We will be given the position and orientation of two image planes and two sets of 2d points( no of points in each set may not the same... meansthere may not be synchronization of cameras on two image planes) of the curve on two image planes.So,how to construct the 3D curve from these 2D points. Focal lengths of two cameras also assumed to be known.
I want to solve this problem in "C"language on "Unix" operating system.Ofcourse,Language is not the main criterion.U please give good algorithm or mathematical background..
And also suggest me web sites and books that I have to reffer.
I think U got my point....
Thanq once again.
vijay
Thanq for ur response..
The problem is that we will be given 2d points on two image planes which are taken from two different views( may not be 90 degrees)i.e. two diffrent positions and orientaions.We will be given the position and orientation of two image planes and two sets of 2d points( no of points in each set may not the same... meansthere may not be synchronization of cameras on two image planes) of the curve on two image planes.So,how to construct the 3D curve from these 2D points. Focal lengths of two cameras also assumed to be known.
I want to solve this problem in "C"language on "Unix" operating system.Ofcourse,Language is not the main criterion.U please give good algorithm or mathematical background..
And also suggest me web sites and books that I have to reffer.
I think U got my point....
Thanq once again.
vijay
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Just thought of a program that was being used at job i was at.
They were using Autocad14.
There must be CAD programs out there for unix.
For what you want, it would just be a matter of creating an intersecting grid and just enter the numbers to scale.
After that it is easy to correct the 3d perspective.
If you really want to do the maths, it sounds like you'll have a hell of a matrix to construct.
Netmage
They were using Autocad14.
There must be CAD programs out there for unix.
For what you want, it would just be a matter of creating an intersecting grid and just enter the numbers to scale.
After that it is easy to correct the 3d perspective.
If you really want to do the maths, it sounds like you'll have a hell of a matrix to construct.
Netmage
it's likely that the picture format will affect the "how to do it"... give more precision please.