> For the complete documentation index, see [llms.txt](https://docs.theiamarkerless.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.theiamarkerless.com/theia3d-documentation/whats-new.md). # What's New ## 2026.1.9 Released 2026-10-06 * Improved batch processing stability and IK fitting when [Use Saved Model](/theia3d-documentation/theia-model-description.md) is used. * Minor bug fixes and improvements. *** ## 2026.1.8 Released 2026-09-17 * Restored second GPU operation in some cases * Improved visual alignment of foot and toe segments in FBX output files * Minor bug fixes and improvements *** ## 2026.1.7 Released 2026-08-11 * Minor bug fixes and stability improvements *** ## 2026.1.6 Released 2026-08-10 * Minor bug fixes and improvements to licensing * Added a new preference for [cropping frames with partial skeleton tracking](/theia3d-documentation/theia3d-dropdown-menus/settings-menu/analysis-preferences.md#remove-start-end-frames-with-partial-skeletons) at the beginning and end of trials * Improved ball tracking and added a new preference for[ removing stale object IDs](https://docs.theiamarkerless.com/theia3d-documentation/object-tracking/object-tracking-preferences) after a specified number of frames *** ## 2026.1.4 Released 2026-06-30 * Minor bug fixes and improvements * Improved stability of engine building process *** ## 2026.1.3 Released 2026-06-09 (beta) * Minor bug fixes and improvements *** ## 2026.1.2 Released 2026-05-21 (beta) * New, improved joint model * Introduces[ Baseball (Free Object)](https://docs.theiamarkerless.com/theia3d-documentation/object-tracking/overview) Tracking as part of the Baseball Module (Bat + Ball Tracking) * New [Small/Medium/Large person detector](https://docs.theiamarkerless.com/theia3d-documentation/getting-started/startup-window#person-tracking) options (available in the Startup window) * New [Small/Large joint detector](https://docs.theiamarkerless.com/theia3d-documentation/getting-started/startup-window#joint-tracking) options (available in the Startup window) ### Theia3D * Chessboard Calibration * Advanced option group > [Corner Quality Threshold](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-dropdown-menus/calibration-menu/chessboard-calibration#corner-quality-threshold)**:** Controls how strict the corner detection is for the chessboard identification. * Preferences > [Remove stale IDs after](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-dropdown-menus/settings-menu/analysis-preferences#remove-stale-ids) \_\_ frames * New frame interval adjustment sets how many frames without a specific person being tracked are allowed before using a new person ID when they are tracked again. * Preferences > [Force Model Symmetry](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-dropdown-menus/settings-menu/analysis-preferences#force-model-symmetry) * Added option to force model left/right symmetry after scaling. This will ensure that the lengths of left/right segment pairs in a model are the same. * Preferences > [Analysis Bounding Box visualization](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-dropdown-menus/settings-menu/analysis-preferences#analysis-bounding-box) * When enabled, the Analysis Bounding Box is now rendered in the 3D viewer space and reprojected on the camera views, to aid in defining its dimensions based on the physical capture volume. * [Linked and Free Objects](https://docs.theiamarkerless.com/theia3d-documentation/object-tracking/overview) * Linked objects refer to objects that are connected to a tracked person(e.g. Baseball Bat) * Free objects refer to objects that are not connected to a tracked person (e.g. Baseball) * Related preferences * [Convert Workspaces](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-dropdown-menus/tools-menu/convert-workspaces) added to Theia3D (previously available in Theia3D Batch only) ### Theia3D Batch * Added [Save 3D Videos option](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-batch/settings#use-hierarchical-names) which saves videos from the 3D viewer area for specified camera perspectives * Added [Save Results Log option](https://docs.theiamarkerless.com/theia3d-documentation/theia3d-batch/settings#save-results-log) which produces a results CSV file for the batch analysis, including warnings, errors, successes, and other useful information --- # Agent Instructions This documentation is published with GitBook. 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