Recent content by Theta

Updates are out now for OpenAthena™ Android, iOS, Core, and Desktop with significant accuracy improvements, especially for newer DJI drones. OpenAthena apps allow you to instantly calculate the ground location of any single pixel of any single drone image using a novel terrain-raycast...

@Eko The Mini 4 Pro is a model that we've actually calibrated previously, here are the values for the sensor: https://github.com/Theta-Limited/DroneModels/blob/517268260c4f9ecc4198ff0544dc20488b1fed48/droneModels.json#L255 To get the Sensor Width and Height, you can multiply the pixel size by...

@Eko Would definitely second what @DJ Wes says, we've encountered similar difficulty in finding these parameters for use in our OpenAthena software. The supposed size of the sensor in spec materials, e.g. 1/3", which Wes calls 'Nominal' is known as Optical Format; it's just a marketing gimmick...

Thanks Thanks! BTW, it's a free app on iOS and Android

Greetings! We're at the Commercial UAV Expo in Las Vegas this week. We're running a booth with an interactive software demo of OpenAthena, our software which can calculate a precise ground location from any single pixel of any single drone image. OpenAthena significantly enhances the use...

Greetings, We recently released a new update of our free and open source OpenAthena™ for Android app which contains some significant new features. The app introduces a novel terrain-raycast technique which allows you to instantly obtain a precise ground location for any single pixel of any...

Hi @PicPerf , here are the values we have recorded for the Air 2 s for the droneModels database of our OpenAthena software: https://github.com/Theta-Limited/DroneModels/blob/e0d93aa7044a8a56f9542f31a596adc7b71e769f/droneModels.json#L449 Unfortunately, the metadata of the Air 2s is in a format...

@Arny no, unfortunately the Mini 2 does not store metadata for camera pitch angle which is needed for calculation

The Mini 3 Pro were able to calibrate manually with our own drone using this script we made: https://github.com/Theta-Limited/camera-calibration ...and the Mini 3 Pro works well with OpenAthena. For the Mini 3, we only had the published specs to go off of (which is slightly less accurate)...

Bobby is the main developer for OpenAthenaIOS btw. @rdkdji I don't think email is public on profile Regardless, we can accept images in emails to [email protected]

Not sure, what exact error message does it give? If it says something like 'missing EXIF data' then it's probably something with how the photos were copied rather than how they were taken from the drone

Also the Mavic 2 Zoom has some of the best accuracy of any of the models we've tested so far. I'm also eager to do testing with the Mavic 3 given its nice telephoto zoom camera

EXIF metadata is basically just hidden tags and values automatically included in images taken by a camera. It doesn't need Internet access to record these tags when an image is taken. Usually it includes stuff like exposure time, camera settings, focal length, etc. For drones, it often includes...

Yes, this app is free. It's one of our first products; it's free so we can promote the new technology and brand. We'd love to hear your feedback on it