pyqt5 使用使用cv2 显示图片显示图片,摄像头的实例摄像头的实例
如下所示：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)
# 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)
评论0