Simple process of reading pictures by QT program developed by Python

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One . python install pyqt5

pip install pyqt5 -i https://mirrors.aliyun.com/pypi/simple

Two . install qt designer（ Design generation program interface ui）

Download address

（ official ）https://build-system.fman.io/qt-designer-download
（csdn）https://download.csdn.net/download/qq_26696715/13094628
( Add group download )686070107

3、 ... and . Use qt designer Design generation ui file

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Dialog</class>
 <widget class="QDialog" name="Dialog">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>635</width>
    <height>511</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Dialog</string>
  </property>
  <widget class="QPushButton" name="pushButton">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>10</y>
     <width>81</width>
     <height>31</height>
    </rect>
   </property>
   <property name="font">
    <font>
     <pointsize>12</pointsize>
     <weight>75</weight>
     <bold>true</bold>
    </font>
   </property>
   <property name="text">
    <string> Select Picture </string>
   </property>
  </widget>
  <widget class="QLabel" name="label">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>70</y>
     <width>581</width>
     <height>401</height>
    </rect>
   </property>
   <property name="text">
    <string/>
   </property>
   <property name="pixmap">
    <pixmap>img/1.tif</pixmap>
   </property>
   <property name="scaledContents">
    <bool>true</bool>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

Four . take ui File conversion to py file

pyuic5 -o ui.py ui.ui

5、 ... and . To write main.py A file called ui.py file

# -*- coding: utf-8 -*-

import sys
import time
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import numpy as np
import cv2
import qimage2ndarray
from ui import Ui_Dialog

class mwindow(QWidget, Ui_Dialog):
    def __init__(self):
        super(mwindow, self).__init__()
        self.setupUi(self)
        
    # Select Picture 
    def openimage(self):
        # Select Picture 
        imgName, imgType = QFileDialog.getOpenFileName(self, " Open the picture ", "img", "*.jpg;*.tif;*.png;;All Files(*)")
        if imgName=="":
            return 0
        #qt5 Read the picture 
        jpg = QPixmap(imgName).scaled(self.label.width(), self.label.height())
        # Show the original 
        self.label.setPixmap(jpg)
if __name__ == '__main__':
    app=QApplication(sys.argv)
    # Initialize window 
    m=mwindow()
    # Bind button event 
    m.pushButton.clicked.connect(m.openimage)# Select Picture 
    m.show()
    sys.exit(app.exec_())

6、 ... and . function main.py file

python main.py

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