操作系统：ubuntu22.04
OpenCV版本：OpenCV4.9
IDE:Visual Studio Code
编程语言：C++11

算法描述

OpenCV 中用于基于可变形部件模型（DPM）的目标检测器，主要用于行人、人脸等目标的检测。它是一种传统的基于特征的目标检测方法，不依赖深度学习，而是使用 HOG 特征 + 部件模型来进行检测。

示例代码

#include <iostream>
#include <opencv2/dpm.hpp>
#include <opencv2/opencv.hpp>using namespace cv;
using namespace cv::dpm;
using namespace std;int main()
{// 指定模型文件路径（支持多个类别）vector< String > modelPaths = { "car.xml" };  // 可添加多个如 "car.xml"vector< String > classNames = { "car" };      // 类别名称// 创建 DPM 检测器Ptr< DPMDetector > detector = DPMDetector::create( modelPaths, classNames );if ( detector.empty() ){cerr << "Failed to create DPMDetector!" << endl;return -1;}// 读取图像Mat image = imread( "/media/dingxin/data/study/OpenCV/sources/images/cars.png" );if ( image.empty() ){cerr << "Failed to load image!" << endl;return -1;}imshow( "Original", image );// 执行检测vector< DPMDetector::ObjectDetection > detections;detector->detect( image, detections );// 显示检测结果for ( const auto& det : detections ){if(det.score > 1.0)rectangle( image, det.rect, Scalar( 0, 255, 0 ), 2 );cout << "Detected object with score: " << det.score << endl;}imshow( "Detections", image );waitKey();return 0;
}