OpenCV中的凍結相機

我試圖放置兩臺相機以便能夠在兩者中拍攝快照，我什至放了一個按鈕來激活一個然后另一個但是當我同時激活兩個或停用一個并激活下一個時以一種或另一種方式視窗凍結. 如果您對此事有任何建議，我將附上我正在構建的代碼，我將不勝感激。總的來說，我對 Python 知之甚少，所以請保持友好。

from tkinter import *
from tkinter import Tk, Label, Frame, Entry, Button
from tkinter import ttk
from PIL import Image
from PIL import ImageTk
import cv2
import threading
import imutils 



window0= Tk() #Pantalla inicial
window0.title('Detección del punto optimo de vacunación') #Titulo de la ventana
window0.geometry('1280x720') #Dimesiones de la ventana
window0.configure(bg='#35455d') #Color de fondo 

tabControl = ttk.Notebook(window0)
tab1 = ttk.Frame(tabControl)
tab2 = ttk.Frame(tabControl)

tabControl.add(tab1, text ='Formulario')
tabControl.add(tab2, text ='Captura de webcam')
tabControl.pack(expand = 1, fill ="both")

#Pesta?a 1 
label_0 = Label(tab1, text="Formulario de Registro",width=20,font=("bold", 20))
label_0.place(x=90,y=53)

label_1 = Label(tab1, text="Edad",width=20,font=("bold", 10))
label_1.place(x=70,y=130)

entry_1 = Entry(tab1)
entry_1.place(x=240,y=130)

label_2 = Label(tab1, text="Genero",width=20,font=("bold", 10))
label_2.place(x=70,y=180)
var = IntVar()
Radiobutton(tab1, text="M",padx = 5, variable=var, value=1).place(x=235,y=180)
Radiobutton(tab1, text="F",padx = 20, variable=var, value=2).place(x=290,y=180)

def IMC():
    try:
        peso = int(entrada_texto.get())
        estatura = int(entrada2_texto.get())
        imc = peso/estatura**2
        etiqueta5.config(text=imc)
    except ValueError:
        etiqueta5.config(text="Introduce un numero")
        
label_3 = Label(tab1, text="Estatura",width=20,font=("bold", 10))
label_3.place(x=70,y=230)
estatura= ""
entry_3 = Entry(tab1, textvariable=estatura)
entry_3.place(x=240,y=230)

label_4 = Label(tab1,text="Peso",width=20,font=("bold", 10))
label_4.place(x=70,y=280)
peso= ""
entry_4 =Entry(tab1, textvariable=peso)
entry_4.place(x=240,y=280)


# print('Su IMC es:¨{}'.format(indice))

label_5 = Label(tab1,text="IMC:",width=20,font=("bold", 10))
label_5.place(x=70,y=330)

entry_5 =Entry(tab1)
entry_5.place(x=240,y=330)

Button(tab1, text='Capturar Imagen',width=20,bg='brown',fg='white').place(x=580,y=560)
# it is use for display the registration form on the window

def iniciarcam1():
    global cap
    cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
    visualizar()
   
def iniciarcam2():
    global cap1
    cap1 = cv2.VideoCapture(0,cv2.CAP_DSHOW)
    visualizar1()
    
def visualizar():
    global cap
    if cap is not None:
        ret, frame = cap.read()
        if ret == True:
            frame = imutils.resize(frame, width=360)
            frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)

            im = Image.fromarray(frame)
            img = ImageTk.PhotoImage(image=im)

            lblVideo.configure(image=img)
            lblVideo.image = img
            lblVideo.after(20, visualizar)
        else:
            lblVideo.image = ""
            cap.release()

def visualizar1():
    global cap1
    if cap1 is not None:
        ret, frame = cap1.read()
        if ret == True:
            frame = imutils.resize(frame, width=360)
            frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)

            im = Image.fromarray(frame)
            img = ImageTk.PhotoImage(image=im)

            lblVideo1.configure(image=img)
            lblVideo1.image = img
            lblVideo1.after(20, visualizar)
        else:
            lblVideo1.image = ""
            cap1.release()
            
def finalizarcam1():
    global cap
    if cap.isOpened():cap.release()
    print("Camara 1 release")
    
def finalizarcam2():
    global cap1
    if cap1.isOpened():cap1.release() 
    print("Camara 2 release")
    
cap = None
cap1 = None 

btnIniciar = Button(tab1, text="Iniciar CAM1", width=20, command=iniciarcam1)
# btnIniciar.grid(column=0, row=0, padx=5, pady=5)
btnIniciar.place(x=800,y=53)

btnFinalizar = Button(tab1, text="Finalizar CAM1", width=20, command=finalizarcam1)
# btnFinalizar.grid(column=1, row=0, padx=5, pady=5)
btnFinalizar.place(x=800,y=103)

btnIniciar = Button(tab1, text="Iniciar CAM2", width=20, command=iniciarcam2)
# btnIniciar.grid(column=0, row=0, padx=5, pady=5)
btnIniciar.place(x=1000,y=53)

btnFinalizar = Button(tab1, text="Finalizar CAM2", width=20, command=finalizarcam2)
# btnFinalizar.grid(column=1, row=0, padx=5, pady=5)
btnFinalizar.place(x=1000,y=103)



lblVideo = Label(window0)
lblVideo1 = Label(window0)
# lblVideo.grid(column=0, row=1, columnspan=2)
lblVideo.place(x=500,y=200)
lblVideo1.place(x=900,y=200)


#Pesta?a 2
label2_0 = Label(tab2, text="Procesado",width=20,font=("bold", 20))
label2_0.place(x=90,y=20)

window0.mainloop() 

uj5u.com熱心網友回復：

我運行代碼，它永遠不會凍結視窗。

我發現的唯一錯誤是：你在函式1中使用 word visualizar1in line - 所以當你啟動第二臺相機然后嘗試運行第一臺相機的代碼時，它無法更新第二臺相機的影像，它可能看起來像凍結。lblVideo1.after(20, visualizar)visualizar1after

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