Great results on relighting 2d images using neural nets here as well: <a href="http:&#x2F;&#x2F;research.microsoft.com&#x2F;en-us&#x2F;um&#x2F;people&#x2F;yuedong&#x2F;project&#x2F;neuralibr&#x2F;neuralibr.htm" rel="nofollow">http:&#x2F;&#x2F;research.microsoft.com&#x2F;en-us&#x2F;um&#x2F;people&#x2F;yuedong&#x2F;projec...</a>