Ellipsoid height recording in Phantom 4 pics

Posted by Danilo Godone on September 7, 2016 at 5:17am

Dear All,

I'm using a  DJI Phantom 4 quadricopter to make orthoimages. 

I've noticed that, in pics' EXIF, elevation is recorded according to geoidic height. I've tried to search for a setting in the various flight planning tools in order to avoid elevation correction and to keep ellipsoid height but without results.

I'm using a UgCS V. 2.9 update 1 on a Win 7 (x64) laptop.

Is there anything I can do to solve this issue?

Thanks for your help,

Danilo

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Tags: elevation, ellipsoid height, geoidic height, phantom 4
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Replies

  • Marshall Cant October 27, 2016 at 1:18pm

    Danilo: could you try doing a coordinate transformation after creating the ortho? Just wondering if that can be done...?

    Marshall

  • Danilo Godone September 7, 2016 at 6:48am

    Dear Sergey, 

    thank for your reply. I'll investigate the firmware option.

    Best regards,

    Danilo

    Sergey Zuev said:

    Dear Danilo,

    For 4 Phantom EXIF data recorded autopilot copter, UGCS can not influence this process.
    It may be better to process third-party application these pictures?
    Or change the firmware autopilot.

     
    Best regards, Sergey Zuev

  • Sergey Zuev September 7, 2016 at 6:42am

    Dear Danilo,

    For 4 Phantom EXIF data recorded autopilot copter, UGCS can not influence this process.
    It may be better to process third-party application these pictures?
    Or change the firmware autopilot.

     
    Best regards, Sergey Zuev

  • Danilo Godone September 7, 2016 at 6:04am

    Dear Sergey,

    thank for your suggestion. Unfortunately the geotagging tool allows only to tag images with AMSL or AGL/Raw (which are similar in values) heights.

    I would like to write in each pic the elevation measured directly from the on board GPS, i.e. WGS 84 ellipsoid height, without further transformation.

    Best regards,

    Danilo

    Sergey Zuev said:

    Dear Danilo,

    You can use the functionality "Geotagging" after the flight, but only if the clock on the camera and the computer are the same.
    For more information you can read on page 67 of the document "User manual":
    https://www.ugcs.com/files/PDFs/Manuals/v2.9/user-manual.pdf

    Best regards, Sergey Zuev

  • Sergey Zuev September 7, 2016 at 5:43am

    Dear Danilo,

    You can use the functionality "Geotagging" after the flight, but only if the clock on the camera and the computer are the same.
    For more information you can read on page 67 of the document "User manual":
    https://www.ugcs.com/files/PDFs/Manuals/v2.9/user-manual.pdf

    Best regards, Sergey Zuev

    https://www.ugcs.com/files/PDFs/Manuals/v2.9/user-manual.pdf
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