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Based on the context provided, it seems like you are trying to use a webcam with a Python program using OpenCV on Torizon. Here are a few steps and considerations that might help resolve the issue:
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Ensure Camera Access in Container: Make sure that your Docker container has access to the webcam device. You need to pass the webcam device (e.g.,
/dev/video0) to the container using the--deviceparameter in your Docker run command or in your Docker Compose file. -
Check Bind Mounts: Ensure that the necessary directories are bind-mounted to the container to allow access to the webcam. This is crucial for hardware access from within a container.
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Device Permissions: Verify that the container has the necessary permissions to access the webcam. You might need to add specific cgroup rules in your Docker Compose file under the
extraparmsparameter, such as:extraparms: key: device_cgroup_rules value: [ "c 199:* rmw", "c 226:* rmw" ] -
Running GUI Applications: If you are using
cv2.imshow, ensure that your container is set up to run GUI applications. This typically involves running a Weston container to handle the display output. -
Check for Errors: Look for any error messages that OpenCV might be providing when it fails at
cv2.imshow. This can give you more insight into what might be going wrong. -
Test with GStreamer: As a troubleshooting step, you might want to test the webcam using a GStreamer pipeline to ensure that the device is working correctly outside of your Python application.
If these steps do not resolve the issue, you may need to provide more specific error messages or logs to further diagnose the problem.
Please, also check if these links can help you solve your problem: