While you’d usually have to describe a photo in words to find corresponding images, stock photo service 500px has built a search engine that lets you browse pictures by drawing images – no matter how badly sketched they are. Currently, Splash works solely for searches within 500px’s marketplace making its application rather limited. But the feature is actually quite fun to play with. To initiate a search, simply choose a color and use the brush to paint the image you want to find. Splash will take care of the rest. At present, the tool provides relatively scant functionality and its interface doesn’t really allow for detailed searches. You only have…

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