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Theta-Limited / OpenAthenaAndroid

OpenAthena allows common drones to spot precise geodetic locations
GNU Affero General Public License v3.0
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Mavic mini 1 seems to do not have geolocalization data in exif... #67

Closed RomainB91 closed 3 months ago

RomainB91 commented 1 year ago

Hi,

Thanks a lot for OpenAthena for Android !

I cannot work with Open Athena for Android and my mavic mini 1.

I do not understand : It seems that my Mavic mini 1 seems to do not have geolocalization data in exif under irfanview. But when i look at the pic in my android phone... it show me some geolocalization data in google map !

Please could you help me, i do not understand.

mkrupczak3 commented 1 year ago

Hi @RomainB91,

Are you having trouble using with OpenAthena for Android with your drone images? If so, feel free to send some in an email (matthew.krupczak@theta.limited) and I'd be happy to take a look.

In general, photo metadata for drone images is either stored in either EXIF metadata, Adobe XMP metadata, or both. If you send images via a messaging app or social media, this data (especially location tags) is sometimes automatically removed to protect user privacy. This may explain why you can see the location data on your phone but not on your computer. You can use a free tool called ExifTool to check if the data has been removed or zeroed out after your transfer.

Your Mavic Mini 1 has camera model FC7203. I've tried a few images from online, and believe you could expect the following:

Screenshot 2023-05-04 at 10 27 15 AM

Latitude, Longitude, and Altitude will be present in the EXIF tags, but not XMP tags. Camera gimbal yaw and pitch are stored within XMP tags. This should be sufficient to work with OpenAthena.

Some older DJI drones incorrectly use their relative altitude from their start point as their "absolute altitude". If so, the data will be incompatible with OpenAthena. Sometimes this can be fixed with a firmware update, but this is not guaranteed.

If the data has been removed by your messaging app or other software, the Exif.GPSInfo tags will be zeroed out like this:

Screenshot 2023-05-04 at 10 39 50 AM
mkrupczak3 commented 1 year ago

I'm keeping this issue open until I can do more testing with the Mavic Mini

RomainB91 commented 1 year ago

Hi, thanks a lot.

If i could help you providing more pictures from the mini (i have a lot of new ones :-)) or anything else, do not hesitate to ask me.

Best regards,

Romain

Le dim. 21 mai 2023, 00:08, mkrupczak3 @.***> a écrit :

I'm keeping this issue open until I can do more testing with the Mavic Mini

— Reply to this email directly, view it on GitHub https://github.com/Theta-Limited/OpenAthenaAndroid/issues/67#issuecomment-1556026242, or unsubscribe https://github.com/notifications/unsubscribe-auth/ANUZSNIUREDA34CFRUSY6PDXHE6E5ANCNFSM6AAAAAAXTR5YOQ . You are receiving this because you were mentioned.Message ID: @.***>

mkrupczak3 commented 1 year ago

Hi @RomainB91,

Wanted to let you know that v0.16.0 is out, with vastly improved accuracy

This may reduce some of the problems you encountered earlier

RomainB91 commented 1 year ago

Hi,

Thanks for the update :)

Have a nice weekend !

Best regards,

Romain

Le sam. 10 juin 2023 à 18:03, mkrupczak3 @.***> a écrit :

Hi @RomainB91 https://github.com/RomainB91,

Wanted to let you know that v0.16.0 is out, with vastly improved accuracy

This may reduce some of the problems you encountered earlier

— Reply to this email directly, view it on GitHub https://github.com/Theta-Limited/OpenAthenaAndroid/issues/67#issuecomment-1585715511, or unsubscribe https://github.com/notifications/unsubscribe-auth/ANUZSNNWCJK3JLCLBSTUTO3XKSLGVANCNFSM6AAAAAAXTR5YOQ . You are receiving this because you were mentioned.Message ID: @.***>

mkrupczak3 commented 3 months ago

Can't reproduce/fix