February 17, 2007
How the Healing Brush came to be
The new issue of Computer Graphics World features an article from Adobe VP of engineering Dave Story, discussing the origins of the Healing Brush*. He writes,
The inspiration for the Healing Brush came from something you might hear in a Physics 101 lecture: When you place a piece of metal on a heated surface, heat diffuses through the metal until it reaches a steady state. But what does heat diffusion have to do with pixel restoration? More than you might think.
Dave mentions Poisson image editing and the Laplace equation, but overall he keeps the discussion out of the techier weeds. If you eat that stuff for breakfast & want something more bracing, you could try this math-heavy 1-pager on covariant image reconstruction from Todor Georgiev, who is featured in Dave’s write-up.
*On the off chance you’re unfamiliar with this technology, here’s a PDF for background on the Healing Brush.