how to change the transformation matrix?

[djoele]

Hello,
we are using ARToolKit. We can get the transformation matrix.

Now we want to do the following. We have one camera under a certain angle.
We want to change the transformation matrix so that it is the same as we would
have a camera under an angle of zero. Is there a way to do this?

So, basicly the camera is in the same position. The only thing that changes is that
the angle changing to zero. At first the camera is ponting downwards, and when the angle is zero it is horizontal.

[djoele]

We have 2 camers mounted on a rig. We can get the transformation matrix for the first camera and for the second.

Now we are trying to discover a relation between the 2 matrices. Does anybody know that relation?


I have been thinking. Basicly you have one image of the marker in the first camera,
and a second image of the (same) marker in the second camera. Could I use, in same way, the RelationTest example? I thought I could use the relation that the inverse of the first matrix multiplied by the second matrix gives the relation between marker2 and marker1,let?s say M3.

Would that mean the following: M1 = M2*M3?

Then we are going to move the rig, and the marker stays fixed. Then, does that relation still hold? I think yes, because with respect to each other the cameras do not change.

Any comments are welcome, please.