Projector calibration method on 4v?

vvvv beta general
1

Hi

I am a computer vision programmer. I recently heard about vvvv from this site.

Many project that I worked were 3D computer vision interaction project.

Camera calibration, homography, structure from motion.

Anyway…

I want to implement the projector based 4v patch which is similar with

http://www.vvvv.org/tiki-index.php?page=How+To+Project+On+3D+Geometry

Until now, is there any projector and object calibration 4v patches?

The calibration means compute the rotation and translation matrix between specific world coordinates and projector
optical axis.

I think that is probably possible using fiducial marker like artoolkit.

But, I think no one didn’t do that. (To my knowledge)

Am I right?

2

ther is just a 2d homography to fit a rectangle. do you know an algorithm to calculate a 3d homography out of some markers of a 3d model?

3

2D planar object in real-world to 2D planar object in computer can be transformed using homography right?

However, how can I align a 3d cube in the real-world and 3d cube in the computer?

4

dont know of any solution, could not find an algorithm in the net, if you know one, please tell me!

5

only one i know called “tape measure” and trigonometry