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Theta Limited

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

Theta Informatics LLC

Theta Informatics LLC 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

OpenAthena™ Core

Theta Informatics' OpenAthena™ Core makes OpenAthena's novel terrain-raycast technique available as a portable Java software library. Unlike the mobile Android and iOS versions, OpenAthena Core is designed and licensed to enable you to integrate the software's novel terrain-raycast technique into your own firm's solutions.

OpenAthena Desktop and Core demo

OpenAthena Core is provided to purchasers as a Java software library with full source code. This allows OpenAthena Core to be extremely flexible for integration as a component of your own proprietary solution. It features a command line interface, Java bindings, and remote use over a RESTful API for seamless integration with your existing software:

OpenAthena Core RESTful API demo



More info is available at https://theta.limited/openathena-core

Contact sales@theta.limited to obtain a free evaluation copy for your developers.


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.

Pinned Loading

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

    OpenAthena allows common drones to spot precise geodetic locations

    Python 87 19

  2. OpenAthenaAndroid OpenAthenaAndroid Public

    OpenAthena allows common drones to spot precise geodetic locations

    Java 72 7

Repositories

Showing 10 of 11 repositories
  • 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 Dec 23, 2024
  • .github Public
    Theta-Limited/.github’s past year of commit activity
    0 0 0 0 Updated Dec 21, 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 Dec 12, 2024
  • EGM96Swift Public

    Port of EGM96 Repo to Swift

    Theta-Limited/EGM96Swift’s past year of commit activity
    Swift 0 MIT 0 0 0 Updated Nov 26, 2024
  • OpenAthenaIOS Public

    OpenAthena port to iOS

    Theta-Limited/OpenAthenaIOS’s past year of commit activity
    Swift 10 AGPL-3.0 2 3 0 Updated Nov 22, 2024
  • OpenAthenaAndroid Public

    OpenAthena allows common drones to spot precise geodetic locations

    Theta-Limited/OpenAthenaAndroid’s past year of commit activity
    Java 72 AGPL-3.0 7 12 (1 issue needs help) 1 Updated Nov 20, 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 Nov 20, 2024
  • DroneModels Public
    Theta-Limited/DroneModels’s past year of commit activity
    Shell 3 GPL-3.0 2 0 0 Updated Nov 13, 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 87 19 4 0 Updated Aug 29, 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 2 Apache-2.0 0 0 0 Updated Nov 20, 2023

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