多线程读取多个摄像头并把画面显示到Tkinter 的 label上面

import cv2
import threading
import tkinter as tk
from PIL import Image, ImageTk


class CameraThread(threading.Thread):
    def __init__(self, camera_index, label):
        threading.Thread.__init__(self)
        self.camera_index = camera_index
        self.label = label
        self.stop_event = threading.Event()

    def run(self):
        cap = cv2.VideoCapture(self.camera_index)
        while not self.stop_event.is_set():
            ret, frame = cap.read()
            if ret:
                frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
                image = Image.fromarray(frame)
                image = ImageTk.PhotoImage(image)
                self.label.config(image=image)
                self.label.image = image
        cap.release()

    def stop(self):
        self.stop_event.set()


def main():
    root = tk.Tk()
    root.title("Multiple Camera Display")

    camera_indices = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
    labels = []
    threads = []

    for i, camera_index in enumerate(camera_indices):
        label = tk.Label(root)
        label.grid(row=i // 4, column=i % 4)
        labels.append(label)
        thread = CameraThread(camera_index, label)
        thread.start()
        threads.append(thread)

    root.mainloop()
    print("结束窗口")

    for thread in threads:
        thread.stop()
        thread.join()


if __name__ == "__main__":
    main()