Also, if your training data is “YES/NO” answer on whether or not certain objects exist in camera feed, and if your trained model only need to output “YES/NO”. I don’t think you have to use YOLO. You can just have a VGG, or AlexNet, but the output can be a 1D vector, where each value represent the probability of certain object exist or not. I high recommend checking out data argument tricks (such as training data rotation, zoom in/out) for this kind of training task.