Modules
		cv2 numpy

Functions
		drawPred(classId, conf, left, top, right, bottom, frame) Draw a bounding box. getOutputsNames(net) Get the names of all the layers in the network postprocess(frame) :param frame: frames from video/camera :return: the largest bunding box which detected by yolov3 model

Data
		classes = ['person', 'bicycle', 'car', 'motorbike', 'aeroplane', 'bus', 'train', 'truck', 'boat', 'traffic light', 'fire hydrant', 'stop sign', 'parking meter', 'bench', 'bird', 'cat', 'dog', 'horse', 'sheep', 'cow', ...] classesFile = 'yolov3/coco.names' confThreshold = 0.5 f = <_io.TextIOWrapper name='yolov3/coco.names' mode='rt' encoding='UTF-8'> inpHeight = 416 inpWidth = 416 modelConfiguration = 'yolov3/yolov3.cfg' modelWeights = 'yolov3/yolov3.weights' net = <dnn_Net 0x7fdcdd77fef0> nmsThreshold = 0.4