Implement yolo v3 and v4 using opencv-python w/o GPU.
Data used in this project:
https://pjreddie.com/media/files/yolov3.weights https://pjreddie.com/media/files/yolov3-tiny.weights https://raw.githubusercontent.com/pjreddie/darknet/master/cfg/yolov3.cfg https://raw.githubusercontent.com/pjreddie/darknet/master/data/coco.names
https://raw.githubusercontent.com/AlexeyAB/darknet/master/cfg/yolov4.cfg https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v3_optimal/yolov4.weights https://raw.githubusercontent.com/AlexeyAB/darknet/master/cfg/yolov4-tiny.cfg https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v4_pre/yolov4-tiny.weights https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v3_optimal/yolov4.conv.137