This was bugging me over the weekend: What is a good way to solve those Where's Waldo? ['Wally' outside of North America] puzzles, using Mathematica (image-processing and other functionality)? Here is what I have so far, a function which reduces the visual complexity a little bit by dimming some of the non-red colors: whereIsWaldo[url_] := Module[{waldo, waldo2, waldoMask}, waldo = Import[url]; wa
![How do I find Waldo with Mathematica?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)