显示网络摄像头序列TkInter [英] Show webcam sequence TkInter

问题描述

我用python编写了一个程序，导入了OpenCV的库.现在，我正在Tkinter中进行GUI.我试图在GUI中显示网络摄像头，但无法显示.我将代码放入函数"中，因为我想用一个按钮查看我的网络摄像头.

I did a program with python, importing the OpenCV's libraries. Now, I'm doing the GUI in Tkinter. I'm trying to show the webcam in the GUI but I couldn't. I put the code in the Function because I would like with a push button see my webcam.

我的代码是:

def webcam():
   img= cv.QueryFrame(cap)
   cam= PhotoImage(img)
   label1 = Label(root, image=cam)
   label1.image = cam
   label1.pack()
   label1.place(x=0, y=400)

此外，我不知道如何在没有一段时间的情况下不断更新，因为我还有另一个按钮可以退出程序.

Also, I don't know how update constantly without a while cycle, because I have another push button to quit the program.

推荐答案

Kieleth的py3.7更新代码

import PIL
from PIL import Image,ImageTk
import pytesseract
import cv2
from tkinter import *
width, height = 800, 600
cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)

root = Tk()
root.bind('<Escape>', lambda e: root.quit())
lmain = Label(root)
lmain.pack()

def show_frame():
    _, frame = cap.read()
    frame = cv2.flip(frame, 1)
    cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
    img = PIL.Image.fromarray(cv2image)
    imgtk = ImageTk.PhotoImage(image=img)
    lmain.imgtk = imgtk
    lmain.configure(image=imgtk)
    lmain.after(10, show_frame)

show_frame()
root.mainloop()

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