opncv_dnn_api.py

import argparse
import glob

import numpy as np
import cv2

# NOTE - This gist only to test Yolov2 model and New OpenCV DNN API
# https://pjreddie.com/darknet/yolov2/

path_to_model_weight = "yolov2-voc.weights"
path_to_model_config = "yolov2-voc.cfg"

yolov2_model = cv2.dnn_DetectionModel(path_to_model_weight, path_to_model_config)
yolov2_model.setInputSize(416,416)
yolov2_model.setInputScale(1.0 / 255.0)
yolov2_model.setInputSwapRB(True)

img = cv2.imread("iamimage.jpg")
print(img.shape)

cls_id, confid, bboxes = yolov2_model.detect(img, nmsThreshold=0.4)
print(cls_id, confid, bboxes)

To Read more about opencv-dnn-api

https://docs.opencv.org/4.x/d3/df1/classcv_1_1dnn_1_1DetectionModel.html