A Gentle Introduction to Convolutional Neural Networks

Let's imagine one morning you decide to go for a run after several years of procrastination and being naive you didn't stretch or warm up before the run. You started running like Phoebe (F.R.I.E.N.D.S reference alert!!) and after running for approx 15 minutes on an uneven ground you suddenly lost your balance and fell down, hurting your ankle. After going back home you notice that your ankle is swollen and you have sharp pain there. You want to know if you got a sprain or fracture but don't want to visit the doctor, because you don't want to catch the deadly virus out there! Suddenly, you remember a conversation with your friend about an app that uses Convolutional Neural Networks (CNN from now on) to detect the type of injury with the help of pictures. You open that app and take picture of your ankle and hocus-pocus, it shows that it is a sprain and you just have to rest, compress and elevate to be healthy again.