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    Request for OpenCV calibration YAMLs

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    • Jeremy McCabeJ
      Jeremy McCabe
      last edited by

      Hello,

      I saw a video suggesting that copies of the camera calibration files are typically maintained, and may be requested by posting the device's serial number in this forum.

      Please let me know specifically where to locate the identifying information on the device if you are able to assist. I need the files for one device, but would like the files for all three of the devices in my possession if possible.

      Devices: (3x) Qualcomm RB5 Flight dev drone.

      Thanks.

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      • Jeremy McCabeJ
        Jeremy McCabe
        last edited by

        Hi @tom, any chance to acquire these camera cal files directly from ModalAI, or should I just proceed with the manual calibration?

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        • Chad SweetC
          Chad Sweet ModalAI Team
          last edited by

          Have you deleted the /data partition on each of the drones? You should be able to find the calibration files there.

          Jeremy McCabeJ 1 Reply Last reply Reply Quote 0
          • Jeremy McCabeJ
            Jeremy McCabe @Chad Sweet
            last edited by

            Hi @Chad-Sweet, thanks for the response. I did not explicitly, but I assumed /data was wiped when flashing the device (since they are supposed to be backed up prior to flashing). The device in question was stuck in fastboot, so I had no option. I just realized the other two device's files should still be sitting in /data.

            I saw various locations mentioned on this page =https://docs.modalai.com/Qualcomm-Flight-RB5-system-image/ (namely: /etc/modalai, /data/misc, /data/modalai).

            Where can I locate the serial number (for the device in question, that was flashed without backup)?

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            • tomT
              tom admin
              last edited by

              @Jeremy-McCabe Yes, I can definitely get those for you. The serial numbers of your drones should be on a small white sticker with a barcode on them, they will be in the form MXXXXXXXXXX.
              On RB5-Flight, the sticker is likely on the outside of the 3d printed enclosure of the drone.

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              • Jeremy McCabeJ
                Jeremy McCabe
                last edited by

                @tom said in Request for OpenCV calibration YAMLs:

                the sticker is likely on the outside of the 3d printed enclosure of the dr

                Awesome! Thanks @tom. I saw the small white stickers but wasn't sure since there are additional stickers located inside of the enclosure with different values. The value for the one on the outside of the enclosure is M2100000CUH. I did notice a conflict on the aforementioned page with conflicting file paths for where to drop the files. Should they all just be dropped in a single directory?

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                • tomT
                  tom admin
                  last edited by

                  @Jeremy-McCabe I will send you an email with the files attached to your address on file with the forum.

                  All of the files, seen below:

                  ~/Dow/M2100000CUH-cam-cal-files  ls                          ok | 11:57:34 AM 
                  opencv_stereo_extrinsics.yml       opencv_stereo_rear_intrinsics.yml
                  opencv_stereo_intrinsics.yml       opencv_tracking_intrinsics.yml
                  opencv_stereo_rear_extrinsics.yml
                  

                  will need to be placed into /data/modalai

                  If you haven't yet, I would recommend updating your RB5-Flight drone to our latest VOXL SDK release (https://developer.modalai.com/asset/view/124) before pushing the files over.

                  Jeremy McCabeJ 1 Reply Last reply Reply Quote 0
                  • Jeremy McCabeJ
                    Jeremy McCabe @tom
                    last edited by

                    @tom Filepath noted, and fortunately we did just update to 0.9.5 SDK. Files received! Thank you.

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