利用pyqt5+opencv水位监测界面设计
界面UI设计
'''
coding: utf-8
date: 2018-9-14
author: Angus Cai
'''
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QFont
class Ui_TabWidget(object):
def setupUi(self, TabWidget):
TabWidget.setObjectName("TabWidget") #创建的是"TabWidget"
TabWidget.resize(950, 600)
self.tab = QtWidgets.QWidget()
self.tab.setObjectName("tab") #"第一个子窗口"
self.pushButton = QtWidgets.QPushButton(self.tab)
self.pushButton.setGeometry(QtCore.QRect(10, 30, 75, 25))
self.pushButton.setObjectName("pushButton")
self.pushButton_3 = QtWidgets.QPushButton(self.tab)
self.pushButton_3.setGeometry(QtCore.QRect(10, 75, 75, 25))
self.pushButton_3.setObjectName("pushButton_3")
self.pushButton_5 = QtWidgets.QPushButton(self.tab)
self.pushButton_5.setGeometry(QtCore.QRect(10,120, 75, 25))
self.pushButton_5.setObjectName("pushButton_5")
self.label = QtWidgets.QLabel(self.tab)
self.label.setGeometry(QtCore.QRect(110, 30, 600, 450))
self.label.setText("")
self.label.setObjectName("label")
self.label_3 = QtWidgets.QLabel(self.tab)
self.label_3.setGeometry(QtCore.QRect(210, 500, 75, 25))
self.label_3.setText("水位预测值：")
self.label_3.setObjectName("label_3")
self.label_5 = QtWidgets.QLabel(self.tab)
self.label_5.setGeometry(QtCore.QRect(300, 500, 75, 25))
self.label_5.setFont(QFont("Roman times",21))
self.label_5.setObjectName("label_5")
TabWidget.addTab(self.tab, "")
self.tab1 = QtWidgets.QWidget() # "第二个子窗口"
self.tab1.setObjectName("tab1")
self.pushButton_2 = QtWidgets.QPushButton(self.tab1)
self.pushButton_2.setGeometry(QtCore.QRect(10, 30, 75, 25))
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_4 = QtWidgets.QPushButton(self.tab1)
self.pushButton_4.setGeometry(QtCore.QRect(10, 75, 75, 25))
self.pushButton_4.setObjectName("pushButton_4")
self.pushButton_6 = QtWidgets.QPushButton(self.tab1)
self.pushButton_6.setGeometry(QtCore.QRect(10,170, 75, 25))
self.pushButton_6.setObjectName("pushButton_6")
self.pushButton_7 = QtWidgets.QPushButton(self.tab1)
self.pushButton_7.setGeometry(QtCore.QRect(10,120, 75, 25))
self.pushButton_7.setObjectName("pushButton_7")
# self.pushButton_8 = QtWidgets.QPushButton(self.tab1)
# self.pushButton_8.setGeometry(QtCore.QRect(10,220, 75, 25))
# self.pushButton_8.setObjectName("pushButton_8")
self.label_2 = QtWidgets.QLabel(self.tab1)
self.label_2.setGeometry(QtCore.QRect(110, 30, 800, 450))
self.label_2.setText("")
self.label_2.setObjectName("label_2")
self.label_4 = QtWidgets.QLabel(self.tab1)
self.label_4.setGeometry(QtCore.QRect(210, 500, 75, 23))
self.label_4.setText("水位预测值：")
self.label_4.setObjectName("label_4")
self.label_6 = QtWidgets.QLabel(self.tab1)
self.label_6.setGeometry(QtCore.QRect(300, 500, 75, 23))
self.label_6.setFont(QFont("Roman times",21))
self.label_6.setObjectName("label_6")
TabWidget.addTab(self.tab1, "")
# self.tab_2 = QtWidgets.QWidget() #"第三个子窗口"
# self.tab_2.setObjectName("tab_2")
# TabWidget.addTab(self.tab_2, "")
self.retranslateUi(TabWidget)
TabWidget.setCurrentIndex(0)
self.pushButton.clicked.connect(TabWidget.imageprocessing) #将按键与事件相连
self.pushButton_2.clicked.connect(TabWidget.videoprocessing)
self.pushButton_3.clicked.connect(TabWidget.imagePredict)
self.pushButton_4.clicked.connect(TabWidget.videoPredict)
self.pushButton_5.clicked.connect(TabWidget.onButtonExit)
self.pushButton_6.clicked.connect(TabWidget.onButtonExit)
self.pushButton_7.clicked.connect(TabWidget.onButtonPause)
# self.pushButton_8.clicked.connect(TabWidget.onButtonTerminate)
QtCore.QMetaObject.connectSlotsByName(TabWidget)
def retranslateUi(self, TabWidget):
_translate = QtCore.QCoreApplication.translate
TabWidget.setWindowTitle(_translate("TabWidget", "Water Level Detector"))
self.pushButton.setText(_translate("TabWidget", "打开图片"))
self.pushButton_2.setText(_translate("TabWidget", "打开视频"))
self.pushButton_3.setText(_translate("TabWidget", "开始预测"))
self.pushButton_4.setText(_translate("TabWidget", "开始预测"))
self.pushButton_5.setText(_translate("TabWidget", "退出"))
self.pushButton_6.setText(_translate("TabWidget", "退出"))
self.pushButton_7.setText(_translate("TabWidget", "暂停/播放"))
# self.pushButton_8.setText(_translate("TabWidget", "结束播放"))
# self.pushButton_5.setFont(QFont("Roman times",21))
TabWidget.setTabText(TabWidget.indexOf(self.tab), _translate("TabWidget", "Tab 1"))
TabWidget.setTabText(TabWidget.indexOf(self.tab1), _translate("TabWidget", "Tab 2"))
# TabWidget.setTabText(TabWidget.indexOf(self.tab_2), _translate("TabWidget", "页"))
逻辑功能实现
'''
coding: utf-8
date: 2018-9-14
author: Angus Cai
'''
import sys, cv2, time, os
from x import Ui_TabWidget
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QFileDialog,QTabWidget
from PyQt5.QtCore import QTimer, QThread, pyqtSignal, Qt
from PyQt5.QtGui import QPixmap, QImage
from PyQt5.QtWidgets import QLabel,QWidget
class mywindow(QTabWidget,Ui_TabWidget): #这个窗口继承了用QtDesignner 绘制的窗口
def __init__(self):
super(mywindow,self).__init__()
self.isAnother = False
self.setupUi(self)
def videoprocessing(self):
print("播放中。。。")
print("isAnother", self.isAnother)
global videoName #在这里设置全局变量以便在线程中使用
if self.isAnother == False:
videoName,videoType= QFileDialog.getOpenFileName(self, "打开视频",""," *.mp4;;*.avi;;All Files (*)")
self.th = Thread(parent=None)
self.th.changePixmap.connect(self.setImage)
self.th.start()
self.isAnother = True
elif self.isAnother == True: # 解决再次打开选择一个视频，会导致两个视频帧交叉播放
self.th.terminate()
videoName,videoType= QFileDialog.getOpenFileName(self, "打开视频",""," *.mp4;;*.avi;;All Files (*)")
self.th = Thread(parent=None)
self.th.changePixmap.connect(self.setImage)
self.th.start()
def setImage(self, image):
self.label_2.setPixmap(QPixmap.fromImage(image))
def imageprocessing(self):
print("hehe")
imgName,imgType= QFileDialog.getOpenFileName(self,
"打开图片",
"",
#" *.jpg;;*.png;;*.jpeg;;*.bmp")
" *.jpg;;*.png;;*.jpeg;;*.bmp;;All Files (*)")
#利用qlabel显示图片
print(str(imgName))
png = QtGui.QPixmap(imgName).scaledToHeight(self.label.height())#适应设计label时的大小
self.label.setPixmap(png)
def imagePredict(self):
self.label_5.setText("128mm")
print("Predicting..............")
def videoPredict(self):
self.label_6.setText("128mm")
print("Predicting..............")
def onButtonExit(self):
app.quit()
print("成功退出！！！！")
def onButtonPause(self):
self.th.pause()
# def onButtonTerminate(self):
# self.th.stop()
class Thread(QThread):#采用线程来播放视频
def __init__(self, parent=None):
super(Thread, self).__init__(parent)
self.isRunning = True
changePixmap = pyqtSignal(QtGui.QImage)
def run(self):
cap = cv2.VideoCapture(videoName)
fps = cap.get(5)
playingSpeed = float(1/fps)
print(fps)
print(videoName)
while (1):
if(cap.isOpened()==True and self.isRunning == True):
ret, frame = cap.read()
if ret:
rgbImage = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
convertToQtFormat = QtGui.QImage(rgbImage.data, rgbImage.shape[1], rgbImage.shape[0], QImage.Format_RGB888)#在这里可以对每帧图像进行处理，
p = convertToQtFormat.scaled(800, 450, Qt.KeepAspectRatio)
self.changePixmap.emit(p)
# time.sleep(0.03) #控制视频播放的速度
time.sleep(playingSpeed)
else:
break
else:
continue
# cap.release()
def pause(self):
if(self.isRunning == True):
self.isRunning = False
print("暂停播放")
elif(self.isRunning == False):
self.isRunning = True
print("继续播放")
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
window = mywindow()
window.show()
sys.exit(app.exec_())
界面展示
图片分析
视频分析
1）视频播放采用opencv读取视频帧率，自然播放；2）可以暂停/播放；3）支持再次打开新的视频文件。
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