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iTwin Capture Forum DJI L1 trajectory
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    DJI L1 trajectory

    fairuz idris
    Offline fairuz idris 2 months ago

    How do i import trajectory files from DJI L1? 

    Its giving error

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    • fairuz idris
      Offline fairuz idris Mon, Aug 21 2023 4:44 AM in reply to fairuz idris +1
      its in wgs84 / utm zone 49N
    • Sylvain Lotteau
      0 Offline Sylvain Lotteau Fri, Aug 18 2023 4:07 AM

      Hello Fairuz, 

      Are you getting an error about mismatching timestamps ? The DJI l1 trajectory files uses second of the week (SOW) GPS time, and usually in the las file, this is global GPS time. Hence the mismatch. 

      This said, we have just released a new version of iTwin Capture Modeler (new ContextCapture), that should correct this issue and automatically convert the SOW into global. 

      I would recommend that you update your iTwin Capture Modeler version and retry importing the scans. (version 23.0.1.2693)

      PLease let me know if this works for you. 

      Best regards,

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    • fairuz idris
      0 Offline fairuz idris Mon, Aug 21 2023 4:00 AM in reply to Sylvain Lotteau

      Hello SIr,

      Until now still not able to import mobile scans with trajectory files

      (cloud_merged.las:

      Only 0 valid points, can't build POD (at least 16 required))

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    • fairuz idris
      0 Offline fairuz idris Mon, Aug 21 2023 4:43 AM in reply to fairuz idris

      https://xkj16-my.sharepoint.com/:f:/g/personal/fairuz_xkj16_onmicrosoft_com/EpaP4MzSkDFPo3U0-WBwf44BjG2yIZ7xYdpt4V9rIYXE8A?e=GDlrao

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    • fairuz idris
      0 Offline fairuz idris Mon, Aug 21 2023 4:44 AM in reply to fairuz idris

      its in wgs84 / utm zone 49N

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    • Sylvain Lotteau
      0 Offline Sylvain Lotteau Mon, Aug 21 2023 5:10 AM in reply to fairuz idris

      Thank you for the files. The problem now is that your point cloud is in UTM while your trajectory information is in lat long. We have a limitation today with iTwin Capture Modeler, the las file and the trajectory file must have the same spatial reference system. Are you able to export the SBET in UTM Zone 49N ? 

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