Added support for looking up terrain altitude. Fixed bug with Autel drone image determination triggered by recent Autel firmware update. Debug output now includes drone altitude vertical datum specification. Added ability to pick drone images from Photos or Files using Settings toggle. Performance improvements due to elimination of debug statements. Main screen is pinchable/zoomable. Changed default elevation data model to Copernicus Global 30m DEM. Settings parameter allows user to switch between SRTM and COP30. Fixed bug with Autel gimbal pitch degree calculation.

Updated drone models database. Added support for new Autel and DJI drones. Fixed issue with drone camera matching for thermal images. Added focal length override for thermal and visual images that incorrectly report focal length. Added workaround for Parrot drones which do not report zoom correctly. Fixed issue with lens distortion correction. Fixed vertical datum determination for DJI and Auto drones.

Updated drone models database to most recent version. Fixed bug affecting how altitude is converted between WGS84 and AMSL.

Added support for more drones including Teal and DJI Magic 2,3. Added maritime mode support for geolocation over oceans. Added warning if an image is from an unknown drone model. Added support for WGS84 degrees/minutes/seconds output format. Added support for USNG output format. Updated drone models database.

Lots and lots of bug fixes. See github for more details. Fixed issue with loading of old drone models json file after app upgrade. Fixed issue so that DEMs are selected based on max coverage. Now use GLO-30 data set for digital elevation data at extreme latitudes. Upaded drone models json to latest version. Elevation map details now displays parameters in user selected geodesy system. License change to AGPLv3. Links in maps now configured to use Geo URI scheme. Cursor on Target messages UID now aligned with other OpenAthena platforms. Circular error estimates now included with target results. Fixed a crash with DEM lookup. Thermal camera images without focal length metadata now better handled. Added pink dot in center of view/point for better visual selection.

Fixed issue with misidentifying thermal camera intrinsic values for color photos and vice versa. Split up MGRS coordinates by GZD, square identifier, easting, and northing, for easier readability. Updated bundled drone models database to include recently released models and tweaks to existing models.

Fixed pinch/zoom of loaded image. UI fixes to clarify units and labels vs parameters. Bug fix for random crashes when switching to maps application. OA now properly calculates and re-marks the location within selected image.

Simplified the UI so that loading and analyzing images all done in same screen. Added imperial vs metric setting for distance values. Shortened the unique ID included on Cursor On Target messages. Fixes for dark mode and html text view screens. Activity indicator added when elevation data is downloading.

Minor tweaks to UI to make results easier to view and reduce need to pinch/zoom and scroll.

Updates for Skydio, Autel, Parrot, and DJI drones. Numerous bug fixes including not downloading elevation maps for 0,0, calculation errors when no drone CCD info is known, fix for settings view for larger screens, add fallback ability to use AltitudeAboveGround if GPS altitude is unavailable or erroneous, fix for math calculation errors from known drone CCD information, and a fix for sending Cursor on Target messages when the original image has been changed. See GitHub repository for more information on fixes.

Fixed permission problem with loading custom droneModels json data file. Fixed minor nit in dark mode when loading custom drone files. Updated app to include latest droneModels data file. Added clarifying text as to next steps once an image is loaded.

OpenAthena™ 2.0 contains a plethora of new features and enhancements. First, digital elevation data is automatically downloaded when needed. Second, lens distortion and compass correction support has been added. Dark mode is now supported. Numerous testing and validation on various drone models and tweaks for calculation accuracy have been added. Drone image importing has been streamlined and made simpler. Finally, notification, result, and error descriptions have been improved.

Added ability to load drone model information from file. New camera parameters added to drone model information. On app restart, previous DEM and drone models files will be reloaded. Load screen added. TAK Cursor on Target messages now supported and sent when user initiates. Fix for old Autel firmware and MSL altitude calculations. Improvements to application workflow to improve usability.

Updated drone CMOS parameters for supported make/models. Added support for catching iOS NSExceptions that can occur in Objective-C libraries. Added support for EGM96 mean sea level altitude implementation. Some applications prefer this altitude measure instead of WGS84. Fixed several crashes when analyzing images from older and/or unsupported drone models. Minor fixes and improvements to usability. Updates to documentation on digital elevation model creation and now provide link in application.

Add support for UTM coordinates. Simplified settings for MGRS. Fixed Calculate view text so it properly scrolls. Added arbitrary point selection support. Implemented inverse distance weighting interpolation for target altitude determination. Added support for drone CMOS/CCD specific parameters when calculating arbitrary point selection. Increased font size for better readability of text.