pyCharm工程pyQt5利用OpenCV3调用本地摄像头

#!/usr/bin/python # -*- coding: UTF-8 -*- import sys import cv2 from PyQt5 import QtCore, QtGui,QtWidgets import os class Ui_MainWindow(QtWidgets.QWidget): def __init__(self, parent=None): super(Ui_MainWindow, self).__init__(parent) # self.face_recong = face.Recognition() self.timer_camera = QtCore.QTimer() self.cap = cv2.VideoCapture() self.CAM_NUM = 0 self.set_ui() self.slot_init() self.__flag_work = 0 self.x =0 def set_ui(self): self.__layout_main = QtWidgets.QHBoxLayout() self.__layout_fun_button = QtWidgets.QVBoxLayout() self.__layout_data_show = QtWidgets.QVBoxLayout() self.button_open_camera = QtWidgets.QPushButton(u'打开相机') self.button_close = QtWidgets.QPushButton(u'退出') self.button_open_camera.setMinimumHeight(50) self.button_close.setMinimumHeight(50) self.button_close.move(10,100) # 信息显示 self.label_show_camera = QtWidgets.QLabel() self.label_move = QtWidgets.QLabel() self.label_move.setFixedSize(200, 200) self.label_show_camera.setFixedSize(641, 481) self.label_show_camera.setAutoFillBackground(False) self.__layout_fun_button.addWidget(self.button_open_camera) self.__layout_fun_button.addWidget(self.button_close) self.__layout_fun_button.addWidget(self.label_move) self.__layout_main.addLayout(self.__layout_fun_button) self.__layout_main.addWidget(self.label_show_camera) self.setLayout(self.__layout_main) self.label_move.raise_() self.setWindowTitle(u'这是软件的名称') # def mousePressEvent(self, QMouseEvent): # x = QMouseEvent.x() # y = QMouseEvent.y() # self.label_move.move(0,0) # print(x,y) # print(self.label_move.pos()) def slot_init(self): self.button_open_camera.clicked.connect(self.button_open_camera_click) self.timer_camera.timeout.connect(self.show_camera) self.button_close.clicked.connect(self.close) def button_open_camera_click(self): if self.timer_camera.isActive() == False: flag = self.cap.open(self.CAM_NUM) if flag == False: msg = QtWidgets.QMessageBox.warning(self, u"Warning", u"请检测相机与电脑是否连接正确", buttons=QtWidgets.QMessageBox.Ok, defaultButton=QtWidgets.QMessageBox.Ok) # if msg==QtGui.QMessageBox.Cancel: # pass else: self.timer_camera.start(30) self.button_open_camera.setText(u'关闭相机') else: self.timer_camera.stop() self.cap.release() self.label_show_camera.clear() self.button_open_camera.setText(u'打开相机') def show_camera(self): flag, self.image = self.cap.read() # face = self.face_detect.align(self.image) # if face: # pass show = cv2.resize(self.image, (640, 480)) show = cv2.cvtColor(show, cv2.COLOR_BGR2RGB) showImage = QtGui.QImage(show.data, show.shape[1], show.shape[0], QtGui.QImage.Format_RGB888) self.label_show_camera.setPixmap(QtGui.QPixmap.fromImage(showImage)) # self.x += 1 # self.label_move.move(self.x,100) # if self.x ==320: # self.label_show_camera.raise_() def closeEvent(self, event): ok = QtWidgets.QPushButton() cacel = QtWidgets.QPushButton() msg = QtWidgets.QMessageBox(QtWidgets.QMessageBox.Warning, u"关闭", u"是否关闭！") msg.addButton(ok,QtWidgets.QMessageBox.ActionRole) msg.addButton(cacel, QtWidgets.QMessageBox.RejectRole) ok.setText(u'确定') cacel.setText(u'取消') # msg.setDetailedText('sdfsdff') if msg.exec_() == QtWidgets.QMessageBox.RejectRole: event.ignore() else: # self.socket_client.send_command(self.socket_client.current_user_command) if self.cap.isOpened(): self.cap.release() if self.timer_camera.isActive(): self.timer_camera.stop() event.accept() if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) ui = Ui_MainWindow() ui.show() sys.exit(app.exec_())