Impossible Fence Optical Illusion

Woah! Check out these two computer generated models of an impossible fence! How does it work? As you may recall, we only feature such CGI posts when origin of the model has no influence on the quality of the presented illusion.

The artist(s) behind these models isn’t known to me, yet the work he did greatly reminds me of Josh Sommers’ CG illusions posted in 2008. Even when being aware these illusion were artificially generated, the question still remains – how was this achieved? How would the object appear if we rotated the model, and show it from different angle? Would these appear the same if they were done in real life? Please share your opinion!