I'm having some issues getting the correct altitude value to write onto the picture EXIF file. I seem to be getting relative altitude as my output onto the photo. Further, it is not outputting any info to the first 4 photos, and I'm getting massive errors in Photoscan (several tens of thousands of meters).

I'm using the tlog with a 307.8 second offset. CAM message offsets are 1, 4, 3, 5, 2, 8, 7, 6; GPS are 2, 3, 9, 6,  7, 8 from left to right top to bottom in Mission Planner 1.3.7 Build 1.1.5307.24027.

I am waiting on an IR trigger and plan on triggering based on distance, but would like to get this working in the meantime. Let me know if you need some of my pictures (100 photo set @ 7 MB each).

Thanks for any help!

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

              • And I'm still unsure why some of my altitudes are sub-meter. In both of our cases, the message offsets are not working correctly.

  • I cant even get this to work well at all. But GitHub is just way over my head. Would you say this geotagging is fully implemented now for the Pixhawk?

  • Last week I was having a similar problem using the data flash log rather than tlog:

    http://diydrones.com/forum/topics/pixhawk-cam-message-offsets

    However, I haven't been able to fully resolve it due to some missing images (discrepancy between number of images and CAM messages). Therefore, I've been using the seconds offset function as well, which is still problematic. There needs to be a better way to synchronize the GPS time with the computer's and camera's clocks.

    Using the data flash log, the Geo Ref tool outputs sub-meter altitudes for some locations. After reading your post, I tried using the tlog instead, and now the Geo Ref tool outputs altitudes between 23-28m. Both results are incorrect because we were actually flying at altitudes well over 100m.

    I think there is a problem with the log message offsets for Pixhawk vs. APM. We didn't encounter this issue when using APM with an IR trigger for our NEX-7.

    • You guys need to put this issue on GitHub so it can be tracked and referred to.
      • I didn't know if it was an issue with the software or my lack of knowledge :P

        • You're not alone. It's either a software issue or a documentation problem. I still haven't found the correct offsets. I can post the issue to Github. 

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @chr1sa: Donkeycar 4.4 released with tons of new features, including path learning (useful with GPS outdoors), better Web and Lidar supp…
Nov 27, 2022
DIY Robocars via Twitter
RT @NXP: We are already biting our nails in anticipation of the #NXPCupEMEA challenge! 😉 Did you know there are great cash prizes to be won…
Nov 24, 2022
DIY Robocars via Twitter
RT @gclue_akira: レースまであと3日。今回のコースは激ムズかも。あと一歩 #jetracer https://t.co/GKcEjImQ3t
Nov 24, 2022
DIY Robocars via Twitter
UC Berkeley's DIY robocar program https://roar.berkeley.edu/
Nov 24, 2022
DIY Robocars via Twitter
RT @chr1sa: The next @DIYRobocars autonomous car race at @circuitlaunch will be on Sat, Dec 10. Thrills, spills and a Brazilian BBQ. Fun…
Nov 24, 2022
DIY Robocars via Twitter
RT @arthiak_tc: Donkey car platform ... Still training uses behavioral cloning #TCXpo #diyrobocar @OttawaAVGroup https://t.co/PHBYwlFlnE
Nov 20, 2022
DIY Robocars via Twitter
RT @emurmur77: Points for style. @donkeycar racing in @diyrobocars at @UCSDJacobs thanks @chr1sa for taking the video. https://t.co/Y2hMyj1…
Nov 20, 2022
DIY Robocars via Twitter
RT @SmallpixelCar: Going to @diyrobocars race at @UCSDJacobs https://t.co/Rrf9vDJ8TJ
Nov 8, 2022
DIY Robocars via Twitter
RT @SmallpixelCar: Race @diyrobocars at @UCSDJacobs thanks @chr1sa for taking the video. https://t.co/kK686Hb9Ej
Nov 8, 2022
DIY Robocars via Twitter
RT @PiWarsRobotics: Presenting: the Hacky Racers Robotic Racing Series in collaboration with #PiWars. Find out more and register your inter…
Oct 23, 2022
DIY Robocars via Twitter
RT @Hacky_Racers: There will be three classes at this event: A4, A2, and Hacky Racer! A4 and A2 are based around UK paper sizing and existi…
Oct 23, 2022
DIY Robocars via Twitter
Oct 23, 2022
DIY Robocars via Twitter
Oct 19, 2022
DIY Robocars via Twitter
Oct 18, 2022
DIY Robocars via Twitter
RT @NeaveEng: Calling all UK based folks interested in @diyrobocars, @f1tenth, @donkey_car, and similar robot racing competitions! @hacky_r…
Oct 13, 2022
DIY Robocars via Twitter
RT @araffin2: 🏎️ After hours of video editing, I'm happy to share a best of my Twitch videos on learning to race with RL. 🏎️ Each part is…
Oct 13, 2022
More…