There is a tool inside TouchDesigner which uses OpenCV to calibrate a camera for projection mapping.

It uses two sets of point (2d and 3d space) and calculates camera projection matrix which is used by the internal renderer to match the geo to the real world.

I almost spent two days looking for way to get this data into Houdini, but since this TouchDesigner just outputs extrinsic/intrinsic and raw intrinsic data there is no option for a direct export/import...

I was hoping someone with good knowledge in OpenCV and CG-Math had an idea if or how this could work.

Thanks
Felix