2. Basic Calibration

1. Keep the camera in Live playback mode, click the "Calibration" button in the toolbar above the software to open the calibration panel, and select "Initial Calibration" in the calibration window. Click on the gear button on the right to open the calibration settings, select the calibration axis (Z/Y) in the "Frame, " select the L calibration rod you are using (L-600/L-450/L-240) in the "L-Type, " and "Manual" for the custom L-shaped rod type.

2. Next, perform L calibration by placing the L-shaped rod, selected in step 1, in the center of the field. Confirm the coordinate orientation: when the Z-axis is upward, the long side of the L-rod points in the positive X-axis direction, and the short side points in the positive Y-axis direction. When the Y-axis is upward, the long side points in the positive Z-axis direction, and the short side points in the positive X-axis direction. Before performing L calibration, ensure that the number in the bottom left parentheses of all 2D views is stable at 4. Click "L Calibration" at the bottom of the panel. If L calibration is successful, the window will become a T calibration window, and the "Next" button will be clickable. If L calibration fails, a prompt "L Calibration Field" will appear, and the "Next" button will be gray and non-clickable, possibly due to the presence of extraneous points in the calibration site. Repeat the impurity removal operation until L calibration is successful.

3. L calibration results can be divided into three categories:

   • All Passed: All lenses pass calibration, and the calibration result graph displays in green.

     

     8.2.1
   • Partial Pass: More than 1/8 of the lenses pass calibration, with a minimum of 2 lenses. The calibration result graph displays in yellow.

     

     8.2.2
   • L Calibration Failure: The calibration result graph displays in red.

     

     8.2.3
   • T calibration can only proceed when all lenses pass or partially pass the L calibration; otherwise, continue L calibration until successful.

4. After passing the L calibration, move the L-shaped calibration rod out of the capture area to ensure no camera can observe it. Then, bring the T-shaped calibration rod into the capture area.

5. Perform T calibration. In the basic T calibration window, "pole length" represents the distance between the reflective marker points at both ends of the T-shaped pole. Enter the number marked on the label on the T-shaped pole. "Duration" represents the calibration time, usually 60-120 seconds. After setting up, click the "Next" button. The personnel hold the T-shaped calibration rod and repeatedly swing it within the capture area. If the camera collects valid data, the corresponding area will turn gray, ensuring that the amount of effective data from each camera is sufficient. As the collected data amount increases, the color of each camera will change from light to dark (8.2.1);\

   

   8.2.4
6. During T-Calibration, a progress bar is displayed that moves forward gradually with the swing of the T-shaped bar. When the progress bar reaches 50%, the T-Calibration background color changes from orange-yellow to green. Swing the T-shaped bar to cover as many corners visible to the lenses as possible. Each 2D view from all lenses should display a maximum of three markers of the T-shaped bar (meaning all 2D views should have a number in the lower left corner that is less than or equal to 3, aiming to have as many lenses as possible display a number of 3). During calibration, the 2D interface shows the areas covered by the calibration bar, displaying real-time available data and impurities. When the dialog indicates the predefined number of frames, there will be a sound prompt, and when the progress bar reaches 100%, a calculation button will appear below the popup window. Click "Calculate" to initiate the calculation process. After completion, the software provides feedback on the calibration result (rated as Poor, Fair, Good, or Excellent). On the right side of the T-Calibration screen, different icons are displayed based on the calibration results. If the calibration result shows "Poor," it is suggested to redo the calibration; otherwise, the file can be saved and used normally. Click "Save Calibration File," input a file name, and click "Finish."

7. During the T calibration swinging process, you can click the 'Terminate' button at any time to stop the swinging. After stopping, you can click 'T Calibration' again to restart the swinging process. If you are not satisfied with the swinging data after completion, you can click the 'Previous' button to return to the state before the T calibration swinging started and restart the swinging operation.

   

   8.2.5
8. During the calculation process, you can click the 'Terminate' button at any time to stop the calculation. If the calculation result is poor or average, you can click the 'Previous Step' button to return to the page before calculation and recalculate the result. Alternatively, you can click the 'Previous' button twice to return to the state before the T calibration swinging started and redo the swinging.

9. Click on "3D Data View" in the toolbar to display the 3D view (8.2.2). This 3D interface can be rotated, panned, and zoomed in using Ctrl/Shift in conjunction with the left/middle/right mouse buttons. Click the play button at the bottom of the interface to put the camera in Live operation mode. In the 3D view, holding down the left mouse button and dragging allows for free rotation of the 3D view. Clicking the right mouse button brings up the function menu. Use of key combinations: Hold down Shift + left mouse button in a non-frozen frame state to select a named point. Hold down the middle mouse button to drag the view, and scroll the middle mouse button to zoom in or out. Ctrl + left mouse button can rotate the view in a fixed direction. The space bar restores the original 3D perspective with one click.

   

   8.2.6

Note: If using the Orbit， you can perform Origin Point Calibration to quickly operate the system.