Python Open Cv Pyqt5

Question

嗨，我正在用Python Opencv Pyqt开发一个项目。启动相机识别的应用程序可启动和停止相机。但是我无法使用Qlabelin代码打开相机，因此我想知道如何解决此错误。

我要照此图片所示去做 我该怎么办？

import cv2
import sys

from PyQt5.QtCore import QTimer
from PyQt5.QtGui import QImage, QPixmap
from PyQt5.QtWidgets import QApplication, QDialog
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Yuztanima(object):
    def setupUi(self, Yuztanima):

        Yuztanima.setObjectName("Yuztanima")
        Yuztanima.setWindowModality(QtCore.Qt.NonModal)
        Yuztanima.resize(1098, 896)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("Giris/Flag_of.png"), QtGui.QIcon.Normal,
                       QtGui.QIcon.Off)
        Yuztanima.setWindowIcon(icon)
        self.centralwidget = QtWidgets.QWidget(Yuztanima)
        self.centralwidget.setObjectName("centralwidget")
        self.imgLabel = QtWidgets.QLabel(self.centralwidget)
        self.imgLabel.setGeometry(QtCore.QRect(240, 80, 640, 480))
        self.imgLabel.setFrameShape(QtWidgets.QFrame.Box)
        self.imgLabel.setText("")
        self.imgLabel.setObjectName("imgLabel")
        self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.horizontalLayoutWidget.setGeometry(QtCore.QRect(10, 700, 1081, 151))
        self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")
        self.Menuduzen_2 = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
        self.Menuduzen_2.setContentsMargins(0, 0, 0, 0)
        self.Menuduzen_2.setObjectName("Menuduzen_2")
        self.startButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap("../../Desktop/camera-play-699330.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.startButton.setIcon(icon1)
        self.startButton.setIconSize(QtCore.QSize(100, 100))
        self.startButton.setObjectName("startButton")
        self.startButton.clicked.connect(self.start_webcam)
        self.Menuduzen_2.addWidget(self.startButton)
        self.stopButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap("../../Desktop/stop_song_red-512.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.stopButton.setIcon(icon2)
        self.stopButton.setIconSize(QtCore.QSize(100, 100))
        self.stopButton.setObjectName("stopButton")
        self.stopButton.clicked.connect(self.stop_webcam)
        self.Menuduzen_2.addWidget(self.stopButton)
        self.yuztanimabaslatbutton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        icon3 = QtGui.QIcon()
        icon3.addPixmap(QtGui.QPixmap("Turkce/YuzTanima.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.yuztanimabaslatbutton.setIcon(icon3)
        self.yuztanimabaslatbutton.setIconSize(QtCore.QSize(100, 100))
        self.yuztanimabaslatbutton.setObjectName("yuztanimabaslatbutton")
        self.Menuduzen_2.addWidget(self.yuztanimabaslatbutton)
        self.cikisbutton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
        icon4 = QtGui.QIcon()
        icon4.addPixmap(QtGui.QPixmap("Giris/erase_delete_remove_wipe_out-512.png"), QtGui.QIcon.Normal,
                        QtGui.QIcon.Off)
        self.cikisbutton.setIcon(icon4)
        self.cikisbutton.setIconSize(QtCore.QSize(100, 100))
        self.cikisbutton.setObjectName("cikisbutton")
        self.Menuduzen_2.addWidget(self.cikisbutton)
        Yuztanima.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(Yuztanima)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1098, 26))
        self.menubar.setObjectName("menubar")
        Yuztanima.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(Yuztanima)
        self.statusbar.setObjectName("statusbar")
        Yuztanima.setStatusBar(self.statusbar)

        self.retranslateUi(Yuztanima)
        self.cikisbutton.clicked.connect(Yuztanima.close)
        QtCore.QMetaObject.connectSlotsByName(Yuztanima)
        self.image = None

    def retranslateUi(self, Yuztanima):
        _translate = QtCore.QCoreApplication.translate
        Yuztanima.setWindowTitle(_translate("Yuztanima", "Yuz Tanıma Yazılımı"))
        self.startButton.setText(_translate("Yuztanima", "Kamerayı Başlat"))
        self.stopButton.setText(_translate("Yuztanima", "Kamerayı Durdur"))
        self.yuztanimabaslatbutton.setText(_translate("Yuztanima", "Yuz Tanımayı Başlat"))
        self.cikisbutton.setText(_translate("Yuztanima", "Çıkış"))

    def start_webcam(self):

        self.capture = cv2.VideoCapture(0)
        self.capture.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
        self.capture.set(cv2.CAP_PROP_FRAME_WIDTH, 640)

        self.timer = QTimer(self)
        self.timer.timeout.connect(self.update_frame)
        self.timer.start(5)

    def update_frame(self):

        ret, self.image = self.capture.read()
        self.image = cv2.flip(self.image, 1)
        self.displayImage(self.image, 1)

    def stop_webcam(self):

        self.timer.stop()

    def displayImage(self, img):

        qformat = QImage.Format_Indexed8
        if len(img.shape) == 3:
            if img.shape[2] == 4:
                qformat = QImage.Format_RGBA8888
            else:
                qformat = QImage.Format_RGB888

        outImage = QImage(img, img.shape[1], img.shape[0], img.strides[0], qformat)
        outImage = outImage.rgbSwapped()

        if Yuztanima == 1:
            self.imgLabel.setPixmap(QPixmap.fromImage(outImage))
            self.imgLabel.setScaledContents(True)

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    Yuztanima = QtWidgets.QMainWindow()
    ui = Ui_Yuztanima()
    ui.setupUi(Yuztanima)
    Yuztanima.show()
    sys.exit(app.exec_())