A related idea:<p><a href="http:&#x2F;&#x2F;graphics.stanford.edu&#x2F;papers&#x2F;dual_photography&#x2F;" rel="nofollow">http:&#x2F;&#x2F;graphics.stanford.edu&#x2F;papers&#x2F;dual_photography&#x2F;</a><p>(with video: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=p5_tpq5ejFQ" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=p5_tpq5ejFQ</a> )