YOLO is a pretrained network to detect 80 objectsfrom an image as mentioned in the.txt file.
yolov3.txt - Contains the name of 80 objects
yolov3.cfg - contains the values of different layers like batch size, filters and more
yolov3.weights - Pretrained Model
Download the pre-trained YOLO v3 weights file from this link
Command format $ python yolo_opencv.py --image /path/to/input/image --config /path/to/config/file --weights /path/to/weights/file --classes /path/to/classes/file