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@Theta-Limited

Theta Limited

Theta provides free and open source software which allows common drones to spot precise locations

Theta Limited

Theta provides OpenAthena™, open source software which allows common drones to spot precise locations quickly:

OpenAthena Drone Camera Terrain Raycast Concept Diagram

OpenAthena arbitrary point location demo gif

OpenAthena™ for Android

Theta's flagship platform OpenAthena for Android allows operators of COTS drones to obtain a precise location from any pixel of a single drone image.

Operators may instantly obtain the exact location of any selected point within a drone image, providing actionable insights faster. Target resolution is accomplished by combining the sensor metadata automatically embeded in drone images (containing data such as lat/lon, camera angle, and zoom level) with an offline-ready Digital Elevation Model which stores the altitude of terrain. This unique approach allows instant location analysis using just one drone image, no need for time-consuming mapping or processing!

The app's custom data extraction technique supports most DJI, Skydio, Autel, and Parrot aircraft. It includes a database of over 45 camera models and automatically accounts for factors such as roll/pitch/yaw, position, crop, focal length, lens distortion, and optical and digital zoom. The geodesy-based target resolution engine then simulates a raycast for the selected point towards a digital twin of the Earth to give you the precise coordinates of your selected point within the image. The engine precisely accounts for latitudinal variations and the curvature, rotation, and gravity of the Earth.

The app natively supports latitude/longitude, UTM, NATO 1m, 10m, and 100m Grid Refs, CK-42 lat/lon, and CK-42 Gauss Krüger Grid Ref as output modes.

Safe, Open, Secure

  • All data processing occurs offline (once a Digital Elevation Model is loaded automatically). This keeps your data private and secure.

  • All the source code which defines how the app operates is open source, meaning anyone can inspect it.

  • Signed builds and a secure software supply chain built entirely from source preclude manipulation by bad actors.

iOS version

OpenAthena for iOS is available for users of iPhone® and iPad® products:

https://github.com/Theta-Limited/OpenAthenaIOS

openathena for ios an arbitrary image point is selected and the coresponding location calculated is displayed

Multiplicative Value

The OpenAthena apps support seamless integrations with platforms such as the Android Team Awareness Kit using the industry-standard Cursor on Target (CoT) interchange format:

OpenAthena for Android DJI_0419.JPG target shown in Google Maps satellite view

OpenAthena for Android triggers a waypoint to show in Android Team Awarness Kit at the calculated location

Make it yours

OpenAthena for Android is entirely free to use, and is licensed under the AGPLv3.0 to protect your rights as a user. You have inalienable rights to view the source code of the App and/or modify the App to your own specifications. You may (subject to local and international law) distribute the App with any modifications you have made, provided that you give your users the very same rights.

Support and Feedback

Let us help you accomplish your mission. Establish direct contact with our developers through support@theta.limited.

Feedback from users is our single most valuable asset. Become involved with our development on GitHub, or submit feedback to feedback@theta.limited to shape the future of the project.

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  1. OpenAthena-Legacy-Python OpenAthena-Legacy-Python Public

    OpenAthena allows common drones to spot precise geodetic locations

    Python 84 19

  2. OpenAthenaAndroid OpenAthenaAndroid Public

    OpenAthena allows common drones to spot precise geodetic locations

    Java 65 7

Repositories

Showing 10 of 12 repositories
  • OpenAthenaAndroid Public

    OpenAthena allows common drones to spot precise geodetic locations

    Theta-Limited/OpenAthenaAndroid’s past year of commit activity
    Java 65 AGPL-3.0 7 14 (1 issue needs help) 1 Updated Nov 5, 2024
  • ThetaTools Public

    Various tools and documentation created and/or used by Theta.

    Theta-Limited/ThetaTools’s past year of commit activity
    Java 0 CC0-1.0 0 2 0 Updated Oct 22, 2024
  • OpenAthenaIOS Public

    OpenAthena port to iOS

    Theta-Limited/OpenAthenaIOS’s past year of commit activity
    Swift 8 AGPL-3.0 2 8 0 Updated Oct 9, 2024
  • Theta-Limited/DroneModels’s past year of commit activity
    Shell 3 GPL-3.0 2 0 0 Updated Sep 28, 2024
  • OA-Accuracy-Testing Public

    Testing framework for evaluating the accuracy of calculations generated by OpenAthena Android

    Theta-Limited/OA-Accuracy-Testing’s past year of commit activity
    R 1 MIT 0 0 0 Updated Sep 20, 2024
  • .github Public
    Theta-Limited/.github’s past year of commit activity
    0 0 0 0 Updated Sep 19, 2024
  • OpenAthena-Legacy-Python Public

    OpenAthena allows common drones to spot precise geodetic locations

    Theta-Limited/OpenAthena-Legacy-Python’s past year of commit activity
    Python 84 19 4 0 Updated Aug 29, 2024
  • camera-calibration Public

    Python script for manual camera calibration using OpenCV with images of a B/W Chessboard pattern

    Theta-Limited/camera-calibration’s past year of commit activity
    Python 3 GPL-3.0 1 0 0 Updated Apr 2, 2024
  • Support-Contract Public

    Draft of contract for OpenAthena support and maintenance services by Theta Informatics LLC

    Theta-Limited/Support-Contract’s past year of commit activity
    0 0 0 0 Updated Mar 1, 2024
  • SRTM-clip-GUI Public

    A Graphical User Interface for downloading a Digital Elevation Model of a specified area

    Theta-Limited/SRTM-clip-GUI’s past year of commit activity
    Python 1 Apache-2.0 0 0 0 Updated Nov 20, 2023

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