pip install opencv-python

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import cv2
import threading
import time

class CameraCapture:
    def __init__(self, camera_index):
        self.cap = cv2.VideoCapture(camera_index)
        self.frame = None

    def get_frame(self):
        ret, frame = self.cap.read()
        if ret:
            self.frame = frame

    def release(self):
        self.cap.release()

def process_frame(frame):
    # 示例：将图像转换为灰度图
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    return gray

def display_frame(title, frame):
    cv2.imshow(title, frame)
    cv2.waitKey(1)

def camera_thread(camera_capture):
    while True:
        camera_capture.get_frame()

def main():
    camera1 = CameraCapture(0)
    camera2 = CameraCapture(1)

    thread1 = threading.Thread(target=camera_thread, args=(camera1,))
    thread2 = threading.Thread(target=camera_thread, args=(camera2,))

    thread1.start()
    thread2.start()

    try:
        while True:
            time.sleep(0.01)
            frame1 = process_frame(camera1.frame)
            frame2 = process_frame(camera2.frame)

            display_frame("Camera 1", frame1)
            display_frame("Camera 2", frame2)
    except KeyboardInterrupt:
        pass
    finally:
        camera1.release()
        camera2.release()
        cv2.destroyAllWindows()

if __name__ == "__main__":
    main()

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