基于pyqt5的人脸识别

基于PyQt5的人脸识别可以通过结合OpenCV和dlib等库来实现。下面是一个简单的示例代码：

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QVBoxLayout
from PyQt5.QtGui import QImage, QPixmap
import cv2
import dlib

class FaceRecognition(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('Face Recognition')
        self.video = cv2.VideoCapture(0)
        self.detector = dlib.get_frontal_face_detector()
        
        self.label = QLabel(self)
        self.layout = QVBoxLayout(self)
        self.layout.addWidget(self.label)
        self.setLayout(self.layout)

    def detect_faces(self, frame):
        gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
        faces = self.detector(gray)
        for face in faces:
            x, y, w, h = face.left(), face.top(), face.width(), face.height()
            cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)
        return frame

    def start_video(self):
        ret, frame = self.video.read()
        frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        frame = self.detect_faces(frame)
        image = QImage(frame.data, frame.shape