正点原子IMX6ULL阿尔法USB摄像头的远程调用（四）Python的实现

话不多说，先上界面：
前情提示：做这个例子，需要USB摄像头已经调好了，同时电脑上已经安好了python、pyqt5、opencv等，下面演出开始吧。。。。直接上代码：

源代码直接上

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

# Form implementation generated from reading ui file 'F:\源代码\video.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon, QPixmap, QPainter, QPen
from PyQt5.QtWidgets import *
import threading
from threading import *
import sys
import cv2
import requests
import numpy as np
from PyQt5.Qt import Qt
import time
class Ui_video(object):
    def setupUi(self, video):
        video.setObjectName("video")
        video.resize(1200, 788)
        self.label = QtWidgets.QLabel(video)
        self.label.setGeometry(QtCore.QRect(0, -2, 1200, 788))
        self.label.setText("")
        self.label.setObjectName("label")
        pixmap = QPixmap('2.png')
        self.label.setPixmap(pixmap)
        self.label.setScaledContents (True)
        self.groupBox = QtWidgets.QGroupBox(video)
        self.groupBox.setGeometry(QtCore.QRect(40, 50, 1120, 688))
        font = QtGui.QFont()
        font.setPointSize(10)
        self.groupBox.setFont(font)
        self.groupBox.setObjectName("groupBox")
        self.pushButton = QtWidgets.QPushButton(self.groupBox)
        self.pushButton.setGeometry(QtCore.QRect(840, 490, 200, 48))
        font = QtGui.QFont()
        font.setPointSize(10)
        self.pushButton.setFont(font)
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.groupBox)
        self.pushButton_2.setGeometry(QtCore.QRect(840, 230, 200, 50))
        self.pushButton_2.setObjectName("pushButton_2")
        self.pushButton_4 = QtWidgets.QPushButton(self.groupBox)
        self.pushButton_4.setGeometry(QtCore.QRect(840, 360, 200, 50))
        self.pushButton_4.setObjectName("pushButton_4")
        self.label_2 = QtWidgets.QLabel(self.groupBox)
        self.label_2.setGeometry(QtCore.QRect(58, 80, 300, 50))
        self.label_2.setObjectName("label_2")
        self.lineEdit = QtWidgets.QLineEdit(self.groupBox)
        self.lineEdit.setGeometry(QtCore.QRect(370, 80, 400, 48))
        self.lineEdit.setObjectName("lineEdit")
        self.pushButton_5 = QtWidgets.QPushButton(self.groupBox)
        self.pushButton_5.setGeometry(QtCore.QRect(840, 80, 200, 50))
        self.pushButton_5.setObjectName("pushButton_5")
        self.label_3 = QtWidgets.QLabel(self.groupBox)
        self.label_3.setGeometry(QtCore.QRect(50, 160, 738, 500))
        self.label_3.setText("")
        self.label_3.setObjectName("label_3")

        self.retranslateUi(video)
        self.pushButton.clicked.connect(self.pushButtonClick)
        self.pushButton_2.clicked.connect(self.pushButton_2Click)
        self.pushButton_4.clicked.connect(self.pushButton_4Click)
        self.pushButton_5.clicked.connect(self.pushButton_5Click)
        self.Video1=''
        self.flag=1
        self.flag0=1
        QtCore.QMetaObject.connectSlotsByName(video)

    def retranslateUi(self, video):
        _translate = QtCore.QCoreApplication.translate
        video.setWindowTitle(_translate("video", "IMX6ULL摄像头传输"))
        video.setWindowIcon(QIcon('1.png'))
        self.groupBox.setTitle(_translate("video", "数据处理区"))
        self.pushButton_2.setText(_translate("video", "视频接收"))
        self.pushButton_4.setText(_translate("video", "视频断开"))
        self.label_2.setText(_translate("video", "请输入IMX6ULL的IP地址："))
        self.pushButton_5.setText(_translate("video", "连    接"))
        self.pushButton.setText(_translate("video", "关闭窗口"))
    def ShowVideo(self):
        Video1=self.Video1
        #Video1='192.168.0.102'
        print(Video1)
        while self.flag == 1:
            url1 = 'http://' + Video1 + ':8080/?action=snapshot'
            try:
                if self.flag0==1:
                    req = requests.get(url1).content
                    print('222')
                    pix = QPixmap()
                    pix.loadFromData(req)
                    image = np.asarray(bytearray(req), dtype="uint8")
                    img = cv2.imdecode(image, cv2.IMREAD_COLOR)
                    gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
                    print('333')
                    classifier = cv2.CascadeClassifier("haarcascade_frontalface_default.xml")
                    print('444')
                    result = classifier.detectMultiScale(gray, scaleFactor=1.1, minNeighbors=3)
                    a = len(result)
                    print(a)
                    if len(result) > 0:
                        painter = QPainter(pix)
                        pen = QPen(Qt.red, 2)
                        painter.setPen(pen)
                        face_num = len(result)
                        for i in range(face_num):
                            x = int(result[i][0])
                            y = (result[i][1])
                            width = (result[i][2])
                            height = (result[i][3])
                            painter.drawRect(x, y, width, height)
                            painter.drawText(x, y, "People")
                        painter.end()
                else:
                    pix=QPixmap('1.jpg')
                    print('000')
            except:
                print('999')
                break
            self.label_3.setPixmap(pix)  
            self.label_3.setScaledContents (True)
            time.sleep(0.5)
    def Video(self):
        try:
            Video_thread = Thread(target=self.ShowVideo)
            Video_thread.setDaemon(True)
            self.flag=1
            self.flag0=1
            Video_thread.start()  # 启动线程
        except Exception as e:
            print(e)
    def pushButtonClick(self):
        video.close()
    def pushButton_2Click(self):
        self.Video()
    def pushButton_4Click(self):
        self.flag=0
        self.ShowVideo()

    def pushButton_5Click(self):
        self.Video1=self.lineEdit.text()
        if len(self.Video1)==0:
            QtWidgets.QMessageBox.information(video, "信息提示", "视频IP不能为空！")
        else:
            self.flag=0
            QtWidgets.QMessageBox.information(video, "信息提示", "连接成功，可以正常操作。")

    
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    video = QtWidgets.QWidget()
    ui = Ui_video()
    ui.setupUi(video)
    video.show()
    sys.exit(app.exec_())

效果图直接上

代码中有好多不规范的地方，上图中也应该是人脸检测，见谅。。。。不多做解释了，下次是一起一点一点做界面呢。。。。还是上带口罩检测呢。。。。再说吧，先玩儿会去。。。。