PyQt5与OpenCV图像处理-优快云博客

本文链接：https://blog.youkuaiyun.com/Mmagic1/article/details/108106710

本文介绍了一个使用PyQt5和OpenCV进行图像处理的简单应用，展示了如何通过PyQt5创建GUI界面，以及如何利用OpenCV读取和显示图片。此应用实现了从文件对话框选择图片的功能，并能在界面上展示所选图片。

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import os
import sys

from PyQt5 import QtGui,QtWidgets,QtCore
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

import test

import cv2


#初始化界面
def Initial_GUI():
    ui.lb_Screen.setFixedSize(ui.lb_Screen.width(),ui.lb_Screen.height())
    ui.btn_Start.clicked.connect(Btn_Read)

#读取图片
def Btn_Read(self):
    imgName,imgType = QFileDialog.getOpenFileName(ui.lb_Screen,"打开图片","","*.jpg;;*.png;;All Files(*)")
    img = cv2.imread(imgName)
    Display_Image(img)

#显示图片
def Display_Image(image):
    if(len(image.shape) == 3):
        image = cv2.cvtColor(image,cv2.COLOR_BGR2RGB)
        Q_img = QImage(image.data,
                       image.shape[1],
                       image.shape[0],
                       image.shape[1]*3
                       QImage.Format_RGB888)
    elif(len(image.shape) == 1):
        Q_img = QImage(image.data,
                       image.shape[1],
                       image.shape[0],
                       QImage.Format_Indexed8)
    else:
        Q_img = QImage(image.data,
                       image.shape[1],
                       image.shape[0],
                       QImage.Format_RGB888)
        
    ui.lb_Screen.setPixmap(QtGui.QPixmap(Q_img))
    ui.lb_Screen.setScaledContents(True)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    MainWindow = QMainWindow()

    ui = test.Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()

    Initial_GUI()

    sys.exit(app.exec_())

PyQt加载显示图片