首页用opencv和VS实现人脸识别代码

用opencv和VS实现人脸识别代码

时间: 2023-11-19 20:00:35 浏览: 97

好的，下面是实现人脸识别的代码： 1.引入opencv库和头文件： ```c++ #include <opencv2/core.hpp> #include <opencv2/highgui.hpp> #include <opencv2/imgproc.hpp> #include <opencv2/face.hpp> #include <iostream> #include <fstream> #include <sstream> #include <vector> ``` 2.定义人脸检测器和识别器： ```c++ cv::CascadeClassifier face_detector("路径/haarcascade_frontalface_alt.xml"); cv::Ptr<cv::face::FaceRecognizer> face_recognizer; face_recognizer = cv::face::LBPHFaceRecognizer::create(); ``` 3.加载训练好的模型： ```c++ face_recognizer->read("路径/模型名称.xml"); ``` 4.读入测试图片： ```c++ cv::Mat test_image = cv::imread("路径/测试图片.jpg", cv::IMREAD_GRAYSCALE); ``` 5.检测人脸并进行识别： ```c++ std::vector<cv::Rect> faces; face_detector.detectMultiScale(test_image, faces); for (int i = 0; i < faces.size(); i++) { cv::Rect face = faces[i]; cv::Mat face_roi = test_image(face); cv::resize(face_roi, face_roi, cv::Size(100, 100)); int predicted_label = -1; double predicted_confidence = 0.0; face_recognizer->predict(face_roi, predicted_label, predicted_confidence); std::cout << "Predicted label = " << predicted_label << "\tConfidence = " << predicted_confidence << std::endl; cv::rectangle(test_image, face, cv::Scalar(255, 0, 0), 2); cv::putText(test_image, "Person " + std::to_string(predicted_label), cv::Point(face.x, face.y - 10), cv::FONT_HERSHEY_PLAIN, 1, cv::Scalar(0, 255, 0), 2); } ``` 6.显示结果： ```c++ cv::imshow("Test Image", test_image); cv::waitKey(0); ``` 希望这份代码可以帮到你。

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