无法使用 Opencv 与树莓派 4 ssh 拍照

Question

我正在使用 ssh 在我的树莓派上运行 opencv。我已经连接了相机但它不拍摄图像。 这是我的代码：

import cv2
  
cam_port = 0
cam = cv2.VideoCapture(cam_port) 

result, image = cam.read() 
  

if result:    
    cv2.imshow("img", image) 
    cv2.imwrite("imasdf.png", image) 
    cv2.waitKey(0) 
    cv2.destroyWindow("img") 
else: 
    print("No image detected. Please! try again") 

我收到此错误：

Traceback (most recent call last):
  File "/home/ai/bacterium.py", line 10, in <module>
    cv2.imshow("img", image) 
cv2.error: OpenCV(4.8.1) /io/opencv/modules/highgui/src/window.cpp:1272: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvShowImage'

我安装了libgtk2.0-dev。当我运行 libgtk2.0-dev 的安装命令时，我得到以下信息：

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libgtk2.0-dev is already the newest version (2.24.33-2+rpt1).
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

我再次运行该文件，但仍然遇到相同的错误。

Answer 1

我意识到，由于我是通过 ssh 连接到我的树莓派，所以我无法使用 imshow。

这是我现在的代码：

import cv2
  
cam_port = 0
cam = cv2.VideoCapture(cam_port) 

result, image = cam.read() 
  


cv2.imwrite("imasdf.png", image)