Question to the experts: Is this kind of a classification or a detection problem ... or both? I remember that visual algorithms for classificaion can get confus

Question to the experts: Is this kind of a classification or a detection problem ... or both? I remember that visual algorithms for classificaion can get confused by objects or situations they were not trained on, so in the result there were unpredictable outcomes in situations that seemed safe before. Or is it more like a "shape and size of a plane" issue?