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Python+Qt虹膜检测识别
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前言
这篇博客针对《Python+Qt虹膜检测识别》编写代码，代码整洁，规则，易读。 学习与应用推荐首选。
运行结果
文章目录
一、所需工具软件
二、使用步骤
1. 主要代码
2. 运行结果
三、在线协助
一、所需工具软件
1. Python, Qt
2. Pycharm
二、使用步骤
代码如下（示例）：
# coding:utf-8
import sys
import cv2
import cv2 as cv
import numpy as np
from PyQt5 import QtWidgets
class Ui_Dialog(object):def setupUi(self, Dialog):Dialog.setObjectName("Dialog")Dialog.resize(542, 454)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(0)sizePolicy.setHeightForWidth(Dialog.sizePolicy().hasHeightForWidth())Dialog.setSizePolicy(sizePolicy)self.gridLayout_2 = QtWidgets.QGridLayout(Dialog)self.gridLayout_2.setObjectName("gridLayout_2")self.pushButton_2 = QtWidgets.QPushButton(Dialog)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(0)sizePolicy.setHeightForWidth(self.pushButton_2.sizePolicy().hasHeightForWidth())self.pushButton_2.setSizePolicy(sizePolicy)font = QtGui.QFont()font.setFamily("微软雅黑")font.setPointSize(16)self.pushButton_2.setFont(font)self.pushButton_2.setObjectName("pushButton_2")self.gridLayout_2.addWidget(self.pushButton_2, 2, 0, 1, 1) sizePolicy.setHeightForWidth(self.frame.sizePolicy().hasHeightForWidth())self.frame.setSizePolicy(sizePolicy)self.frame.setFrameShape(QtWidgets.QFrame.Box)self.frame.setFrameShadow(QtWidgets.QFrame.Raised)self.frame.setObjectName("frame")self.gridLayout = QtWidgets.QGridLayout(self.frame)self.gridLayout.setObjectName("gridLayout")self.label = QtWidgets.QLabel(self.frame)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(1)sizePolicy.setHeightForWidth(self.label.sizePolicy().hasHeightForWidth())self.label.setSizePolicy(sizePolicy)self.label.setStyleSheet("background-color: rgb(255, 255, 255);")self.label.setAlignment(QtCore.Qt.AlignCenter)self.label.setObjectName("label")self.gridLayout.addWidget(self.label, 0, 0, 1, 1)self.label_2 = QtWidgets.QLabel(self.frame)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Preferred)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(1)sizePolicy.setHeightForWidth(self.label_2.sizePolicy().hasHeightForWidth())self.label_2.setSizePolicy(sizePolicy)self.label_2.setStyleSheet("background-color: rgb(255, 255, 255);")self.label_2.setAlignment(QtCore.Qt.AlignCenter)self.label_2.setObjectName("label_2")self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)self.gridLayout_2.addWidget(self.frame, 0, 1, 8, 1)self.textEdit = QtWidgets.QTextEdit(Dialog)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)sizePolicy.setHorizontalStretch(0)sizePolicy.setVerticalStretch(0)sizePolicy.setHeightForWidth(self.textEdit.sizePolicy().hasHeightForWidth())self.textEdit.setSizePolicy(sizePolicy)self.textEdit.setMinimumSize(QtCore.QSize(0, 150))font = QtGui.QFont()font.setFamily("微软雅黑")font.setPointSize(16)self.textEdit.setFont(font)self.textEdit.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)self.textEdit.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAsNeeded)self.textEdit.setObjectName("textEdit")self.gridLayout_2.addWidget(self.textEdit, 4, 0, 1, 1)self.label_3 = QtWidgets.QLabel(Dialog)font = QtGui.QFont()font.setFamily("微软雅黑")font.setPointSize(12)self.label_3.setFont(font)self.label_3.setObjectName("label_3")self.gridLayout_2.addWidget(self.label_3, 3, 0, 1, 1)self.pushButton_6 = QtWidgets.QPushButton(Dialog)font = QtGui.QFont()font.setFamily("微软雅黑")font.setPointSize(16)self.pushButton_6.setFont(font)self.pushButton_6.setObjectName("pushButton_6")self.gridLayout_2.addWidget(self.pushButton_6, 1, 0, 1, 1)spacerItem = QtWidgets.QSpacerItem(17, 153, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)self.gridLayout_2.addItem(spacerItem, 7, 0, 1, 1)self.pushButton = QtWidgets.QPushButton(Dialog)sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Fixed)sizePolicy.setHorizontalStretch(1)sizePolicy.setVerticalStretch(0)sizePolicy.setHeightForWidth(self.pushButton.sizePolicy().hasHeightForWidth())
class myWin(QtWidgets.QWidget, Ui_Dialog):def __init__(self):super(myWin, self).__init__()self.setupUi(self)def openFileButton(self):imgName, imgType = QFileDialog.getOpenFileName(self,"打开文件","./","files(*.*)")img = cv2.imread(img)cv2.imwrite("temp/new.jpg", img)height, width, pixels = img.shapeprint("width,height",width,height)print("self.label.width()",self.label.width())print("self.label.height()",self.label.height())if width>(self.label.width()):rheight=(self.label.width()*height)*widthrwidth=self.label.width()print("rwidth-if,rheight-if", width, rheight)elif height>(self.label.height()):rwidth=(self.label.height()*width)/heightrheight=self.label.height()print("rwidth-elif,rheight-elfi", rwidth, rheight)elif ((self.label.height())-height)<((self.label.width())-width):rwidth=(self.label.height()*width)/heightrheight=self.label.height()print("rwidth-elif,rheight-elfi", rwidth, rheight)_image = QtGui.QImage(img2[:], img2.shape[1], img2.shape[0], img2.shape[1] * 3, QtGui.QImage.Format_RGB888)jpg_out = QtGui.QPixmap(_image).scaled(rwidth, rheight) #设置图片大小self.label.setPixmap(jpg_out) #设置图片显示def saveFileButton(self):img = cv2.imread("temp/new.jpg")file_path = QFileDialog.getSaveFileName(self, "save file", "./save/test","jpg files (*.jpg);;all files(*.*)")print(file_path[0])cv2.imwrite(file_path[0], img)cv2.destroyAllWindows()def Contrast(self):import ospath = "DataBase/"file_list = os.listdir(path)for file in file_list:img1 = cv2.imread('temp/new.jpg')BasePath="DataBase/" + str(file)print("BasePath: ", BasePath)img2 = cv2.imread(BasePath)print("img2: ",img2)sift = cv2.xfeatures2d.SIFT_create()kp1, des1 = sift.detectAndCompute(img1, None)kp2, des2 = sift.detectAndCompute(img2, None)indexParams = dict(algorithm=0, trees=10)searchParams = dict(checks=50)flann = cv2.FlannBasedMatcher(indexParams, searchParams)matches = flann.knnMatch(des1, des2, k=2)matches = sorted(matches, key=lambda x: x[0].distance)print("file:",file)self.textEdit.setPlainText("匹配系数：0.5")self.textEdit_2.setPlainText("匹配成功名称："+file)print("n: ",n)height, width, pixels = img2.shapeif width > (self.label.width()):rheight = (self.label.width() * height) * widthrwidth = self.label.width()print("rwidth-if,rheight-if", width, rheight)elif height > (self.label.height()):rwidth = (self.label.height() * width) / heightrheight = self.label.height()print("rwidth-elif,rheight-elfi", rwidth, rheight)
if __name__=="__main__":app=QtWidgets.QApplication(sys.argv)Widget=myWin()Widget.showMaximized();Widget.show()sys.exit(app.exec_())运行结果
三、在线协助：
如需安装运行环境或远程调试，见文章底部个人 QQ 名片，由专业技术人员远程协助！
1）远程安装运行环境，代码调试
2）Visual Studio, Qt, C++, Python编程语言入门指导
3）界面美化
4）软件制作
5）云服务器申请
6）网站制作
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