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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.shape
print("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)*width
rwidth=self.label.width()
print("rwidth-if,rheight-if", width, rheight)
elif height>(self.label.height()):
rwidth=(self.label.height()*width)/height
rheight=self.label.height()
print("rwidth-elif,rheight-elfi", rwidth, rheight)
elif ((self.label.height())-height)<((self.label.width())-width):
rwidth=(self.label.height()*width)/height
rheight=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 os
path = "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.shape
if width > (self.label.width()):
rheight = (self.label.width() * height) * width
rwidth = self.label.width()
print("rwidth-if,rheight-if", width, rheight)
elif height > (self.label.height()):
rwidth = (self.label.height() * width) / height
rheight = 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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