After calibration is completed, if the splitting effect of the "marker" point in the 3D view is not good, or if the calibration time is too long apart from the usage time, resulting in poor results, you can update the calibration to keep the camera in Live playback mode. Open the "Calibration Pane" and select the "Update" option (8.3.1) in the window. Updating the calibration does not require placing an L-shaped rod first, but it is necessary to ensure that there are no other miscellaneous points in the field of view except for the T-shaped pole. If there are any miscellaneous points in the camera's field of view, you can repeat the steps of "Preparation for Calibration".
Click "Next" and proceed to the T-calibration. In the T-calibration window, if you are loading a calibration file that has been merged with partition calibration, select the area number for updating calibration in the "Area" field. If you want to update the entire area for calibration, select "All" and check the "Protect Current Camera Correction" option to prevent camera parameters from being modified during the update calibration process.
Repeat steps 4 and 5 of 'Initial Calibration' to perform T-calibration. After the calibration time is up, click "Next" and the software will automatically calculate. After completion, the calibration result will be displayed in the window (e.g., "Poor", "Normal", "Good", "Perfect"). If the calibration result shows "Poor", it is recommended to recalibrate; otherwise, the result can be saved and used normally. Click "Next" to perform L-type calibration.
Place the L-shaped rod into the field and ensure that there are no other miscellaneous points except for the four points of the L-shaped rod. Click "Next" to perform the L-shaped calibration. After the calibration is successful, click the "Finish" button to complete the calibration. Click the "File Save Calibration File" option in the bottom right corner of the software interface to save the updated calibration configuration file. If the L-shaped calibration fails, a pop-up window will prompt out.
Possible causes of L-type calibration failure include:
The presence of additional points in the field besides the four points of the L-shaped pole, causing the software to incorrectly recognize the L-shaped pole
In the 2D view, less than four points appear on the L-shaped rod.
Solutions for L-type calibration failure during update calibration include:
Eliminate environmental factors and remove all other points in the field except for the four points of the L-shaped pole.
Ensure the L-shaped rod parameter in the self-test software matches the actual L-shaped rod used.
Click "Previous" to return to the previous step and perform the L-type calibration again.
If calibration still fails, please consult a technical engineer.
When updating the calibration, if the user does not need to update the coordinate system position in the 3D view after completing the T-shaped calibration, there is no need to perform the L-shaped calibration. Click 'Finish' to save the updated calibration file. Once the L-shaped calibration is completed, the coordinate system in the 3D view will align with the placement of the L-shaped rod during the L-shaped calibration.
