基本概念

        加载darknet框架的YoloV4模型做目标检测。OpenCV DNN模块支持常见深度学习框架如TensorFlowCaffe、Darknet等，对应的函数：readNetFromTensorflow、readNetFromCaffe.

// 加载darknet网络
Net net = readNetFromDarknet(config, weights);

YoloV4对应的权重和配置文件如下，下载地址

String config = "./model/yolov4.cfg";
String weights = "./model/yolov4.weights";
string classesFile = "./model/coco.names";

完整代码

#include<opencv2/opencv.hpp>
#include<opencv2/dnn.hpp>
#include <iostream>
#include <fstream>
#include<istream>
#include<string>

using namespac