pyqt5 使用cv2 顯示圖片,攝像頭的實例

今天小編就爲大家分享一篇pyqt5 使用cv2 顯示圖片,攝像頭的實例，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧

如下所示：

#! /usr/bin/python3
# coding = utf-8
# from PyQt5 import QtGui,QtCore,Qt
import sys
from PyQt5.QtCore import Qt,pyqtSignal,QSize,QRect,QMetaObject, QCoreApplication, pyqtSlot,QPropertyAnimation,QThread
from PyQt5.QtGui import QIcon, QFont, QPixmap, QPainter, QImage
from PyQt5.QtWidgets import QMainWindow, QApplication

import cv2
from gevent.libev.corecext import SIGNAL, time
from qtpy importQtCore


class mycsms(QMainWindow):
    def __init__(self):
        super(mycsms, self).__init__()
        self.setupUi(self)
        self.image= QImage()
        self.device= cv2.VideoCapture(0)
        self.playTimer= Timer("updatePlay()")
        self.connect(self.playTimer, SIGNAL("updatePlay()"), self.showCamer)

    # 讀攝像頭
    def showCamer(self):
        if self.device.isOpened():
            ret, frame= self.device.read()
        else:
            ret = False
        # 讀寫磁盤方式
        # cv2.imwrite("2.png",frame)
        #self.image.load("2.png")

        height, width, bytesPerComponent= frame.shape
        bytesPerLine = bytesPerComponent* width
        # 變換彩色空間順序
        cv2.cvtColor(frame, cv2.COLOR_BGR2RGB,frame)
        # 轉爲QImage對象
        self.image= QImage(frame.data, width, height, bytesPerLine, QImage.Format_RGB888)
        self.view.setPixmap(QPixmap.fromImage(self.image))

if __name__ == "__main__":
    app = QApplication(sys.argv)
    myshow = mycsms()
    myshow.playTimer.start()
    myshow.show()
    sys.exit(app.exec_())

# 線程類：
class Timer(QtCore.QThread):

    def __init__(self, signal="updateTime()", parent=None):
        super(Timer, self).__init__(parent)
        self.stoped= False
        self.signal= signal
        self.mutex= QtCore.QMutex()

    def run(self):
        with QtCore.QMutexLocker(self.mutex):
            self.stoped= False
        while True:
            if self.stoped:
                return
            self.emit(QtCore.SIGNAL(self.signal))
            #40毫秒發送一次信號
            time.sleep(0.04)

    def stop(self):
        with QtCore.QMutexLocker(self.mutex):
            self.stoped= True

    def isStoped(self):
        with QtCore.QMutexLocker(self.mutex):
            return self.stoped

以上這篇pyqt5 使用cv2 顯示圖片,攝像頭的實例就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持神馬文庫。