"There is still a long way to go [with machine learning], and that's where Moodstocks comes in," the company said in a blog post (translated). The deal seems to fall in to the "aqui-hire" category, as Moodstocks will cease its own recognition services, and its team of engineers will join Google at its R&D center in Paris. Google is rumored to be working on a feature that allows Android users to search directly from their photos (below), though the company didn't say if the acquisition is related.

Google isn't the only company pursuing deep learning and image recognition. Facebook, Twitter, Microsoft, Amazon and basically most of Silicon Valley are enamored of the tech. It's already being used in voice recognition apps like Alexa, Cortana and Siri, and image recognition products like Google's Photos and Microsoft's Translator app. Other deep learning applications include driverless cars, robotic concierges, cooking, weather forecasting, writing criticism and infinitely more.

Most of those apps rely on powerful servers like IBM's Watson, but the latest trend is to speed things up by processing data on your device. Apple's iOS 10, for instance, will rely less on cloud computing and more on the iPhone's built in horsepower for image recognition. Google's purchase of Moodstocks appears to be along the same lines, as the startup has expertise in "thick client" computing, which uses a combination of cloud and "on-device" computing.