Snapchat is taking over the world, and a huge part of the takeover can be attributed to the unique filters that are on the app. Despite what you may think, there is a lot of technology required behind the scenes to get that dog filter on your face. The technology is extremely advanced and is progressing everyday. Snapchat even allows you to add other peoples faces on top of yours. Watch the video below as the people at Vox attempt to explain this complex technology.