pyqt5 使用cv2 显示图片,摄像头
【摘要】
#! /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,QPropert...
#! /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)
# 读摄像头
def showCamer(self):
if self.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:
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毫秒发送一次信号
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
文章来源: blog.csdn.net,作者:网奇,版权归原作者所有,如需转载,请联系作者。
原文链接:blog.csdn.net/jacke121/article/details/78765178
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