Four cameras case from TU Twente

Four cameras are positioned on one side of the glass wall, featuring water prisms and wide-angle lenses. Two cameras are inverted, so note the angle around the camera z-axis of about 3.5

Test case source and explanation:

https://groups.google.com/g/openptv/c/7WTmRrO75VY/m/Q4wUPfDHBAAJ

Solution

1. Important to note that glass vector that has to be 0,0,1 and not 0,0,0 - # we could consider some restrictions on the OpenPTV level