Photonvision trouble defining multiple cameras of same model

Technical PhotonVision
1

We have been able to define multiple cameras of the same model in previous revisions, however we are having issues with doing this under release 2024.3.1 (I believe this is running ubuntu server 22 LTS on a x64 processor. The cameras are the recommended 9281 USB cameras.

The process goes like this.

  1. Boot coproc. No cameras are connected.
  2. Connect camera.
  3. Photonvision sees the new camera
  4. Define pipeline for april tag, Name pipeline. Also name the camera – Cam0_April.
  5. Restart device.
  6. Calibrate camera
  7. Set 3d mode.
  8. Restart device and test. Camera works well. See screen shot.

IMG_4259
IMG_42591920×1440 437 KB

  1. Plug in second camera.
  2. Two new cameras appear. However these actually show the image from the same camera. See picture.
  3. Restart device (to see if the duplicate disappears.) Now the original camera doesn’t show up. The two new cameras show up and are still the same device.
    IMG_4260
    IMG_42601920×2560 925 KB

Thoughts?

I looked for documentation on deleting all the camera configuration to start from scratch but didn’t find anything. Disconnected all cameras. I looking around I deleted the camera_backups folder contents and the sqlite database file. Rebooted coproc. Repeated the steps. Same results.

Thanks
Jim

2

I don’t have any experience with Photonvision myself, but I remember reading on here that to use multiple cameras they must be different models or have different names. My understating is that Arducams are preferred since they provide a utility to change the name of the camera.

1 Like
3

Thank you for the reply. It was to our understanding that limitation had been fixed and we have been able to use the same model in earlier versions, and we are using Arducams.