import cv2
import sys
import time
import threading
from collections import deque
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import *
import numpy as np
#设定蓝色阈值，HSV空间
blueLower = np.array([100, 100, 100])
blueUpper = np.array([120, 255, 255])
#初始化追踪点的列表
mybuffer = 64
pts = deque(maxlen=mybuffer)
#打开摄像头
camera = cv2.VideoCapture(0)
#等待两秒
time.sleep(2)
#创建一个线程类
class MyTemperatureThread(QThread):
def __init__(self, parent=None): # 线程初始化
super().__init__(parent)
#定义一个信号
breakSignal = pyqtSignal(int, int)
breakSignalq = pyqtSignal(int, int)
def run(self):
while True:
# 读取帧
(ret, frame) = camera.read()
frame = cv2.flip(frame, 1, dst=None) # 水平镜像
# 判断是否成功打开摄像头
if not ret:
print('No Camera')
break
# frame = imutils.resize(frame, width=600)
# 转到HSV空间
hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
# 根据阈值构建掩膜
mask = cv2.inRange(hsv, blueLower, blueUpper)
# 腐蚀操作
mask = cv2.erode(mask, None, iterations=2)
# 膨胀操作，其实先腐蚀再膨胀的效果是开运算，去除噪点
mask = cv2.dilate(mask, None, iterations=2)
# 轮廓检测
cnts = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)[-2]
# 初始化瓶盖圆形轮廓质心
center = None
# 如果存在轮廓
if len(cnts) > 0:
# 找到面积最大的轮廓
c = max(cnts, key=cv2.contourArea)
# 确定面积最大的轮廓的矩形
x, y, w, h = cv2.boundingRect(c)
# 计算轮廓的矩
M = cv2.moments(c)
# 计算质心
center = (int(M["m10"] / M["m00"]), int(M["m01"] / M["m00"]))
# 只有当半径大于10时，才执行画图
a = int(M["m10"] / M["m00"])
b = int(M["m01"] / M["m00"])
#print("x：", a)
#print("y: ", b)
print("宽",w)
print("高",h)
self.breakSignal.emit(a, b)#将a,b传给界面
self.breakSignalq.emit(w, h) # 将w,h传给界面
# print(center)#显示中心点坐标
cv2.rectangle(frame, (x, y), (x + w, y + h), (0, 0, 255), 2) # 显示矩形框
cv2.circle(frame, center, 1, (0, 0, 255), -1) # 显示圆心
cv2.imshow('Frame', frame)
cv2.waitKey(1)
# 摄像头释放
#显示界面类
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
# 设置窗口大小
MainWindow.resize(645, 483)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
#定义一个标签用来显示图片
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(0, 0, 460, 460))
self.label.setText("")
self.label.setPixmap(QtGui.QPixmap("E:\jre\cheku.jpg"))
self.label.setScaledContents(True)
self.label.setWordWrap(False)
self.label.setObjectName("label")
#定义一个标签，用来显示移动的图片
self.label_2 = QtWidgets.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(420, 90, 32, 21))
self.label_2.setMinimumSize(QtCore.QSize(0, 0))
self.label_2.setMaximumSize(QtCore.QSize(16777215, 16777215))
self.label_2.setText("")
self.label_2.setPixmap(QtGui.QPixmap("E:\jre\lanse.jpg"))
self.label_2.setObjectName("label_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
#将
def chufa(w,h):
if w>h:
ui.label_2.resize(32, 21)
else:
ui.label_2.resize(21, 32)
def chuli(a,b):
ui.label_2.move(a, b)
if __name__ == '__main__':
app = QApplication(sys.argv)
MainWindow = QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
cv2.waitKey(1000)#延时1秒，不然会看不见画面
T = MyTemperatureThread()
T.breakSignal.connect(chuli)
T.breakSignalq.connect(chufa)#连接触发函数
T.start()
sys.exit(app.exec_())
#销毁所有窗口
cv2.destroyAllWindows()
