在Qt窗口中显示摄像头馈送

Question

我有点卡在这里了。我想在PyQt5窗口中显示网络摄像头实时feed。当我按下这个按钮的时候，画面就开始了，按钮变成了绿色，文字变成了"Stop camera"。，在下一次单击时，提要必须停止，按钮必须恢复到其原始状态，并且提要被图像替换。目前我只得到一张静止的图像。

一旦我得到这个工作，我想添加一些线程

下面是代码(更新):

import os
import threading
import timeit
import cv2
from PyQt5 import QtGui
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt, QThread, pyqtSignal
from PyQt5.QtGui import *
from PyQt5.uic import loadUi

class Worker1(QThread):
ImageUpdate = pyqtSignal(QImage)
def run(self):
self.ThreadActive = True
self.Capture = cv2.VideoCapture(0)
while self.ThreadActive:
ret, frame = self.Capture.read()
if ret:
Image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
FlippedImage = cv2.flip(Image, 1)
ConvertToQtFormat = QImage(FlippedImage.data, FlippedImage.shape[1], FlippedImage.shape[0], QImage.Format_RGB888)
Pic = ConvertToQtFormat.scaled(640, 480, Qt.KeepAspectRatio)
self.ImageUpdate.emit(Pic)
self.Capture.release()
cv2.destroyAllWindows()
def stop(self):
self.ThreadActive = False
self.terminate()
class FaceIdWindow(QtWidgets.QMainWindow):
def __init__(self):
super(FaceIdWindow, self).__init__()
self.ui = loadUi("uidesign/facereco/FaceId.ui", self)
self.ui.cmdChoosePicture.clicked.connect(self.ChoosePicture)
self.ui.cmdStartCamera.clicked.connect(self.StartCamera)
self.ui.cmdTrainFace.clicked.connect(self.TrainFace)
self.ui.cmdProcess.clicked.connect(self.Process)
self.status_camera = "STOPPED"

def StartCamera(self):
start = timeit.default_timer()
start = timeit.default_timer()
print("Start StartCameran")
print(self.status_camera)
if  self.status_camera == "STOPPED":
self.status_camera = "STARTED"
self.ui.cmdStartCamera.setStyleSheet("background-color: green")
self.ui.cmdStartCamera.setText("Stop camera")
self.Worker1 = Worker1()
self.Worker1.start()
self.Worker1.ImageUpdate.connect(self.ImageUpdateSlot)
else:
self.status_camera = "STOPPED"
self.Worker1.stop()
image_path = str(os.getcwd())
image_path = image_path + "/assets/clipart/clipartfaceid2.png"
self.lblPicture.setPixmap(QtGui.QPixmap(image_path))
self.ui.cmdStartCamera.setStyleSheet("background-color: ")
self.ui.cmdStartCamera.setText("Start camera")

print("Stop StartCameran")
end = timeit.default_timer()
print("Process Time: ", (end - start))
def ImageUpdateSlot(self, Image):
self.lblPicture.setPixmap(QPixmap.fromImage(Image))

有什么建议吗?

干杯，约翰

Answer 1

似乎我没有开始和停止我的线程在正确的地方。代码已更新，但如果有人有任何改进，请不要犹豫!欢呼声约翰