Python Opencv和Tkinter：如何销毁视频提要并再次调用该页面

如何解决Python Opencv和Tkinter：如何销毁视频提要并再次调用该页面

我正在尝试获得以下内容：在第1页上，我可以获得OpenCV视频提要和转到第2页的“配置”按钮。单击该按钮后，它必须销毁第1页，加载第2页并关闭视频。提要。

在第2页上，我有一些GPIO按钮和转到第1页的第1页按钮。单击此按钮后，必须销毁第2页，加载第1页并开始实时视频馈送。

使用以下代码，一切正常，但是当我按第1页按钮时，该应用程序无法启动视频供稿。我该如何改善代码？

from imutils.video import VideoStream
import numpy as np
import argparse
import imutils
import time
import cv2
import tkinter as tk 
from PIL import Image,ImageTk
from datetime import datetime

def show_frame(): 
        frame = vs.read()
        frame = imutils.resize(frame,width=400)
        frame = cv2.cvtColor(frame,cv2.COLOR_BGR2RGBA)
        frame = Image.fromarray(frame)
        frame = ImageTk.PhotoImage(image=frame)
        display.img = frame 
        display.configure(image=frame)
        window.after(8,show_frame) 
    
################ fuction to destroy page 1 and load page 2 ####################     
def on_close1():
    window.destroy()
    page_2()

################ fuction to destroy page 2 and load page 1 #################### 
def on_close2():
    window1.destroy()
    page_1()
    show_frame()  
########################### fuction for Page1  ################################   
def page_1():
    global window
    global vs
    global display
    global imageFrame

    window = tk.Tk()  #Makes main window
    window.title("Page 1")
    window.config(background="#FFFFFF")

    #Graphics window
    imageFrame = tk.Frame(window,width=600,height=600)
    imageFrame.grid(row=2,column=1,padx=2,pady=2)

    print("[INFO] starting video stream...")

    vs = VideoStream(src=0).start()
    print (vs)
    time.sleep(2.0)

  
    display = tk.Label(imageFrame)
    display.grid(row=2,column=0,columnspan=2,sticky='news',padx=10,pady=2)  #Display 1
    
    myLable2 = tk.Label(imageFrame,text = "TEMP",width=10,bg='white',fg="black",font=("Helvetica",16))
    myLable2.grid(sticky='w',ipadx= 8,row= 3,column= 0)

    myLable3 = tk.Entry(imageFrame,width=5,16))
    myLable3.grid(sticky='w',column= 1)


    mybtn = tk.Button(imageFrame,text="configuration",12),command=on_close1)
    mybtn.grid(row= 6,column= 1)

########################### fuction for Page2  ################################
 
def page_2():
     #Graphics window
    global window1
    window1 = tk.Tk()  #Makes main window
    window1.title("Page2")
    window1.config(background="#FFFFFF")
    global imageFrame1
    imageFrame1 = tk.Frame(window1,height=600)
    imageFrame1.grid(row=2,pady=2)

    myLable2_2 = tk.Button(imageFrame1,text="GPIO 1",command=gpio)
    myLable2_2.grid(sticky='w',row= 2,column= 0)

    myLable3_3 = tk.Button(imageFrame1,text="GPIO 2",command=gpio)
    myLable3_3.grid(sticky='w',column= 1)

    myLable8_8 = tk.Button(imageFrame1,text="Page 1",command= on_close2)

    myLable8_8.grid(sticky='w',row= 5,column= 1)

########################### fuction for GPIO  ################################       
def gpio():
    pass   
   
################ Beginning of the program  #########################

if __name__ == '__main__':  
    page_1()
    show_frame() #Display
window.mainloop()  #Starts GUI