Replies to This Discussion

Permalink Reply by RN on December 31, 2012 at 6:24pm

Whats the source of the Exif location data in the photo?

While it would not be very hard to convert the exif data to a single point in a gpx file, it will not be enough for Palentier to overlay the image.

The reason they need a GPX file is to get the telemetry of your UAV to calculate the proper position of the picture. I wouldn't be surprised if they also need the azimuth and elevation of the camera relative to the UAV to get an accurate calculation.

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Permalink Reply by JP on January 3, 2013 at 4:28am

One thing you need for Palentier is a compass heading.. this is required so each image can be rotated or oriented properly on the ground. If you build a gpx file from the logs, make sure to include the <compass> tag in your gpx option to work with Palentier.

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Permalink Reply by RN on January 7, 2013 at 11:26am

It should need

UAV:

Latitude

Longitude

Altitude

Pitch

Roll

Heading

Camera Elevation angle relative to UAV

Camera Heading angle relative to UAV

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Permalink Reply by Bret C on March 11, 2013 at 3:50am

JP:

I see that my recent GPX files created from the Mission Planner, Telemetry Logs, Tlog>Kml or Graph, Create KML +GPX did not include the compass heading. 

Where / how do we "make sure to include the <compass> tag in your gpx option to work with Palentier?"

Thank you.

Bret C

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Permalink Reply by Bret C on March 12, 2013 at 5:04am

No feedback on this post so I reposted this question here

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Permalink Reply by Richard Brown on April 22, 2013 at 3:18pm

Bret,

I have to go into Notepad, open the GPX file, and do a "replace" on "course" to change it to "Compass".

Then Palentier will recognize heading in the GPX file.

Yes, it would be nice if MP would do this for us in the Telemetry GPX file.

I'm still having issues with images that are lower than the avg height of the mission.  Seems like Palentier is not really using the altitude info properly to calculate scale of overlay.  And compass is still not orienting correctly it seems. Lot of manual tweaking.

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Permalink Reply by Cliff Gill on January 8, 2013 at 6:15am

Exiftool will create gpx track files from a group of images, see 'inverse geotagging" here:

http://www.sno.phy.queensu.ca/~phil/exiftool/geotag.html

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Permalink Reply by JP on March 15, 2013 at 7:09am

Also, GeoSetter is a great tool for geo-tagging imagery, viewing gpx files, and also exif meta data. 

http://www.geosetter.de/en/

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Permalink Reply by Bret C on March 15, 2013 at 8:10am

Thank you JP.

Bret c

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Permalink Reply by Bret C on March 15, 2013 at 8:08am

Cliff:

Thank you for the tip.  I will check it out.

Bret C

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