"pretty secure" It's either completely secure or it isn't secure at all. Blurs can be deconvolved if the point spread function is known or can be guessed. Two

"pretty secure" It's either completely secure or it isn't secure at all. Blurs can be deconvolved if the point spread function is known or can be guessed. Two blurs is just security through obscurity and hoping that numerical precision / stability issues work out in your favor. Just black out sensitive areas. https://en.m.wikipedia.org/wiki/Deconvolution https://en.m.wikipedia.org/wiki/Deconvolution http://refocus-it.sourceforge.net/ http://refocus-it.sourceforge.net/