> 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/apollo-v2024/theia3d-documentation/theia3d-dropdown-menus/calibration-menu/adjust-calibration.md). # Adjust Calibration

The adjust calibration tool is used to modify the position and orientation of the global coordinate system after calibration has been completed or a calibration file has been loaded.

The Adjust Calibration tool can be used to modify the position and orientation of the global coordinate system (GCS) after completing a chessboard or object calibration, or after loading an existing calibration file. The GCS projection on each 2D camera view and within the 3D View is updated live as the Position and Angle sliders are used to modify these parameters of the GCS localization. This tool can be used to reposition the GCS to a more desirable position or orientation if the desired origin frame could not be used from the chessboard calibration trial, for any other methodological reason that requires the GCS in a specific position. *** ### **Position (X, Y, Z)** X, Y, Z sliders can be used to change the position of the GCS relative to its original position, measured in mm. *** ### **Angle (X, Y, Z)** X, Y, Z sliders can be used to change the orientation of the GCS relative to its original orientation, about the respective axis of the GCS, in degrees. *** ### **Reset** Reset the position and angle sliders to 0.0. *** ### **Apply** Apply the selected position and angle adjustments to the current camera system calibration. *** ### **Apply and Save** Apply the selected position and angle adjustments to the current camera system calibration, and save the result as a new calibration .txt file. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.theiamarkerless.com/apollo-v2024/theia3d-documentation/theia3d-dropdown-menus/calibration-menu/adjust-calibration.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.