在Docker中使用OpenCV(Python)访问网络摄像头? [英] Access webcam using OpenCV (Python) in Docker?

问题描述

我正在尝试将Docker用于我们的使用OpenCV处理网络摄像头feed(Python)的项目之一.但是我似乎无法在docker中访问网络摄像头，这是我用来测试网络摄像头访问权限的代码:

I'm trying to use Docker for one of our projects which uses OpenCV to process webcam feed (Python). But I can't seem to get access to the webcam within docker, here's the code which I use to test webcam access:

python -c "import cv2;print(cv2.VideoCapture(0).isOpened())"

这是我到目前为止所尝试的，

And here's what I tried so far,

 docker run --device=/dev/video0 -it rec bash

 docker run --privileged --device=/dev/video0 -it rec bash

 sudo docker run --privileged --device=/dev/video0:/dev/video0 -it rec bash

所有这些都返回False，我在做什么错了?

All of these return False, what am I doing wrong?

推荐答案

您提供的链接中的Dockerfile没有指定opencv的安装方式，可以提供您使用的Dockerfile吗?还是您如何安装opencv?

The Dockerfile in the link you provided doesn't specify how opencv was installed, can you provide the Dockerfile you used? Or how you installed opencv?

如果通过pip安装opencv，VideoCapture(0)将无法工作.

VideoCapture(0) won't work if you install opencv via pip.

您正确使用了--device=/dev/video0:/dev/video0.

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