pyqt5 使用cv2 顯示圖片，攝像頭

#! /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(zhuǎn)為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(fā)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

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