我正在尝试使 raspberry pi 相机与 opencv 一起使用 [英] I am trying make the raspberry pi camera work with opencv

问题描述

我尝试使此代码与 raspberry pi cam 一起使用.你如何让 cv2.VideoCapture(0) 将树莓派摄像头识别为指定摄像头

I tried making this code work with the raspberry pi cam. how do you make the cv2.VideoCapture(0) recognise the raspberry pi camera as the designated camera

import cv2

def diffImg(t0, t1, t2):
   d1 = cv2.absdiff(t2, t1)
   d2 = cv2.absdiff(t1, t0)
   return cv2.bitwise_and(d1, d2)

cam = cv2.VideoCapture(0)  

winName = "Movement Indicator"
cv2.namedWindow(winName, cv2.CV_WINDOW_AUTOSIZE)

t_minus = cv2.cvtColor(cam.read()[1], cv2.COLOR_RGB2GRAY)
t = cv2.cvtColor(cam.read()[1], cv2.COLOR_RGB2GRAY)
t_plus = cv2.cvtColor(cam.read()[1], cv2.COLOR_RGB2GRAY)

while True:
   cv2.imshow( winName, diffImg(t_minus, t, t_plus) )

# Read next image
t_minus = t
t = t_plus
t_plus = cv2.cvtColor(cam.read()[1], cv2.COLOR_RGB2GRAY)

key = cv2.waitKey(10)
if key == 27:
   cv2.destroyWindow(winName)
   break

 print ("Goodbye")

推荐答案

您不能将 cv2.VideoCapture() 用于 RaspiCam.

You cannot use cv2.VideoCapture() for RaspiCam.

cv2.VideoCapture() 仅适用于 USB 摄像头，不适用于 CSI 摄像头.

The cv2.VideoCapture() is only for USB camera, not for CSI camera.

如果你想用RaspiCam进行抓拍，可以参考这个教程

If you want to use RaspiCam for capturing, you can refer this tutorial

更新:答案不再正确，因为现在您可以使用 cv2.VideoCapture() 作为下面提到的评论.

Update: The answer is no longer correct since now you can use cv2.VideoCapture() as the comment mentioned bellow.

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