pyqt5 使用cv2 显示图片,摄像头的实例
如下所示：
#!/usr/bin/python3
#coding=utf-8
#fromPyQt5importQtGui,QtCore,Qt
importsys
fromPyQt5.QtCoreimportQt,pyqtSignal,QSize,QRect,QMetaObject,QCoreApplication,pyqtSlot,QPropertyAnimation,QThread
fromPyQt5.QtGuiimportQIcon,QFont,QPixmap,QPainter,QImage
fromPyQt5.QtWidgetsimportQMainWindow,QApplication
importcv2
fromgevent.libev.corecextimportSIGNAL,time
fromqtpyimportQtCore
classmycsms(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)
#读摄像头
defshowCamer(self):
ifself.device.isOpened():
ret,frame=self.device.read()
else:
ret=False
#读写磁盘方式
#cv2.imwrite("2.png",frame)
#self.image.load("2.png")
height,width,bytesPerComponent=frame.shape
bytesPerLine=bytesPerComponent*width
#变换彩色空间顺序
cv2.cvtColor(frame,cv2.COLOR_BGR2RGB,frame)
#转为QImage对象
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_())
#线程类：
classTimer(QtCore.QThread):
def__init__(self,signal="updateTime()",parent=None):
super(Timer,self).__init__(parent)
self.stoped=False
self.signal=signal
self.mutex=QtCore.QMutex()
defrun(self):
withQtCore.QMutexLocker(self.mutex):
self.stoped=False
whileTrue:
ifself.stoped:
return
self.emit(QtCore.SIGNAL(self.signal))
#40毫秒发送一次信号
time.sleep(0.04)
defstop(self):
withQtCore.QMutexLocker(self.mutex):
self.stoped=True
defisStoped(self):
withQtCore.QMutexLocker(self.mutex):
returnself.stoped
以上这篇pyqt5使用cv2显示图片,摄像头的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持毛票票。