I have heard that they are used to train AI and self driving cars and what not, but if thats the case how do they know the right answers to things. IF they need to train AI to know what a traffic light is, how do they know im actually selecting traffic lights? and could we just collectively agree to only select the top right square over and over and would their systems eventually start to believe it that this was the right answer? Sorry this is a lot of questions
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There are a few types of captcha, but I’m going to explain the modern and familiar one from your example, with the traffic lights.
Imagine it’s your job as a human to decide if I am a robot. We are in the same room. You have some pictures, some of which you know are correct, some of which you know are not, and some of which you don’t know.
You show me the pictures and I get the ones that are right, don’t choose the wrong ones and choose some of the unknown ones.
Because I got the right ones right and didn’t choose the wrong ones, I am pre-qualified. You now have to decide if you think I’m human based on when you watched me make the decisions. If I was made of shiny metal and stiff armed and jerky, moving like C-3PO, you know I’m a robot. If I look pretty human but still am stiff you might be suspicious as well. You then either let me go, or give me another chance.
Aside from verification, when someone is takes a captcha, whether they cleared as being human, the choices they made, and how they behaved are all recorded. How they behaved is used to train the program that watches the person to see if they look like C-3PO. The answers to the traffic lights and other objects are collected as a datasets which are used to help further research into computer based learning, as well as for AIs that are used to identify road based features.
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