如何使用OpenCV从同时连接到Raspberry Pi 3的两个USB摄像机捕获和保存图像？

Question

我希望使用由连接到Raspberry Pi 3的两个USB摄像机拍摄的一对上下一对立体声图像，以用于无人机。 如何将同时拍摄的图像保存在pi上的文件夹中？ 这是使两个摄像机在两个单独的窗口上运行的工作：

import cv2

frame0 = cv2.VideoCapture(1)
frame1 = cv2.VideoCapture(3)
while 1:

   ret0, img0 = frame0.read()
   ret1, img00 = frame1.read()
   img1 = cv2.resize(img0,(1280,720))                          #360,240
   img2 = cv2.resize(img00,(1280,720))
   if (frame0):
       cv2.imshow('img1',img1)
   if (frame1):
       cv2.imshow('img2',img2)

   k = cv2.waitKey(30) & 0xff
   if k == 27:
      break

frame0.release()
frame1.release()
cv2.destroyAllWindows()

Answer 1

每7秒将两个图像集与.py文件保存在同一目录中。

import cv2
import time

frames = 100
interval = 7

frame0 = cv2.VideoCapture(1)
frame0.release()
frame0 = cv2.VideoCapture(1)
frame1 = cv2.VideoCapture(3)
frame1.release()
frame1 = cv2.VideoCapture(3)
for i in range(frames):

   ret0, img0 = frame0.read()
   ret1, img00 = frame1.read()
   img1 = cv2.resize(img0,(1280,720))                          #360,240
   img2 = cv2.resize(img00,(1280,720))
   if (frame0):
       cv2.imwrite('./img_'+str(i).zfill(4)+'.jpg',img1)
   if (frame1):
       cv2.imwrite('./img2_'+str(i).zfill(4)+'.jpg',img2)

   time.sleep(interval)
   #k = cv2.waitKey(30) & 0xff
   #if k == 27:
    #  break

frame0.release()
frame1.release()
cv2.destroyAllWindows()