我正在设计一个GUI以捕获来自picamera的图像，我正在使用PyQt5开发该GUI。我使用camera.start_preview（）函数查看实时预览。之后，我使用了一个名为“ Take”的按钮来捕获图像，并在捕获图像后，使用self.label_2.setPixmap（QtGui.QPixmap（））命令在Qlabel中显示了该图像，直到我的代码正常为止。现在，我想将PiCamera的实时预览设置为相同的Qlabel，用于显示捕获的图像。是否可以在QLabel中设置实时预览？
在谷歌搜索之后，我发现PIL可用于在窗口内流式传输实时预览，但是我不知道如何实现它。
from PyQt5 import QtCore, QtGui, QtWidgets
from picamera import PiCamera
import time
from time import sleep
import gpiozero
from gpiozero import Button
from PIL import Image
import cups
import os
camera = PiCamera()
camera.sensor_mode = 2
camera.brightness = 70
camera.contrast = 20
photoHeight = 1944
photoWidth = 2592
class clsPicCount(object):
countpic=0
def __init__(self):
clsPicCount.countpic=clsPicCount.countpic+1
if clsPicCount.countpic > 1:
clsPicCount.countpic = 0
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(1366, 768)
MainWindow.setMinimumSize(QtCore.QSize(1366, 768))
MainWindow.setMaximumSize(QtCore.QSize(1366, 768))
font = QtGui.QFont()
font.setUnderline(False)
font.setStrikeOut(False)
MainWindow.setFont(font)
icon = QtGui.QIcon()
icon.addPixmap(QtGui.QPixmap("Photo.png"), QtGui.QIcon.Normal, QtGui.QIcon.On)
MainWindow.setWindowIcon(icon)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.retake = QtWidgets.QPushButton(self.centralwidget)
self.retake.setGeometry(QtCore.QRect(320, 680, 211, 71))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.retake.setFont(font)
icon1 = QtGui.QIcon()
icon1.addPixmap(QtGui.QPixmap("retake.png"), QtGui.QIcon.Normal, QtGui.QIcon.On)
self.retake.setIcon(icon1)
self.retake.setIconSize(QtCore.QSize(50, 50))
self.retake.setObjectName("retake")
self.take = QtWidgets.QPushButton(self.centralwidget)
self.take.setGeometry(QtCore.QRect(550, 680, 211, 71))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.take.setFont(font)
icon2 = QtGui.QIcon()
icon2.addPixmap(QtGui.QPixmap("take.png"), QtGui.QIcon.Normal, QtGui.QIcon.On)
self.take.setIcon(icon2)
self.take.setIconSize(QtCore.QSize(60, 60))
self.take.setObjectName("take")
self.print = QtWidgets.QPushButton(self.centralwidget)
self.print.setGeometry(QtCore.QRect(780, 680, 211, 71))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.print.setFont(font)
icon3 = QtGui.QIcon()
icon3.addPixmap(QtGui.QPixmap("print.png"), QtGui.QIcon.Normal, QtGui.QIcon.On)
self.print.setIcon(icon3)
self.print.setIconSize(QtCore.QSize(50, 50))
self.print.setCheckable(True)
self.print.setObjectName("print")
self.settings = QtWidgets.QPushButton(self.centralwidget)
self.settings.setGeometry(QtCore.QRect(1220, 690, 121, 51))
font = QtGui.QFont()
font.setPointSize(8)
font.setBold(True)
font.setWeight(75)
self.settings.setFont(font)
icon4 = QtGui.QIcon()
icon4.addPixmap(QtGui.QPixmap("settings.png"), QtGui.QIcon.Normal, QtGui.QIcon.On)
self.settings.setIcon(icon4)
self.settings.setIconSize(QtCore.QSize(30, 30))
self.settings.setObjectName("settings")
self.heading = QtWidgets.QLabel(self.centralwidget)
self.heading.setGeometry(QtCore.QRect(390, 20, 581, 31))
self.heading.setObjectName("heading")
self.label_2 = QtWidgets.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(230, 70, 900, 600))
self.label_2.setText("")
self.label_2.setPixmap(QtGui.QPixmap("photobooth.jpg"))
self.label_2.setScaledContents(True)
self.label_2.setObjectName("label_2")
self.label_3 = QtWidgets.QLabel(self.centralwidget)
self.label_3.setGeometry(QtCore.QRect(0, 0, 1361, 771))
self.label_3.setText("")
self.label_3.setPixmap(QtGui.QPixmap("background.png"))
self.label_3.setObjectName("label_3")
self.label_3.raise_()
self.retake.raise_()
self.take.raise_()
self.print.raise_()
self.settings.raise_()
self.heading.raise_()
self.label_2.raise_()
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
#Defining functions of our buttons
self.take.clicked.connect(self.startPreview)
#Initializing Printer
conn = cups.Connection ()
printers = conn.getPrinters ()
printer_name = list(printers)[0]
for printer in printers:
print (printer, printers[printer]["device-uri"])
#Code Block for live preview and image capture
def startPreview(self):
p=clsPicCount()
print(clsPicCount.countpic)
if clsPicCount.countpic == 1:
camera.start_preview(fullscreen=False, window=(10,0,320,240))
else:
filename = time.strftime("%Y%m%d-%H%M%S")
print (filename)
camera.capture('/home/pi/Desktop/%s.jpg'%filename, resize = (photoWidth, photoHeight))
camera.stop_preview()
self.label_2.setPixmap(QtGui.QPixmap('/home/pi/Desktop/%s.jpg'%filename))
self.label_2.setScaledContents(True)
#self.label_3.raise_()
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "PhotoBooth"))
self.retake.setText(_translate("MainWindow", "RETAKE"))
self.take.setText(_translate("MainWindow", "TAKE"))
self.print.setText(_translate("MainWindow", "PRINT"))
self.settings.setText(_translate("MainWindow", "SETTINGS"))
self.heading.setText(_translate("MainWindow", "<html><head/><body><p align=\"center\"><span style=\" font-size:14pt; font-weight:600; color:#ffffff;\">TECH MECH SERVICES PVT LTD.</span></p></body></html>"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())