(1) Reference video calibration
Computer access USB camera;
Open XINGYING software, load the calibrated calibration file, connect the lens to play;
Place the T-rod in the field and quickly create a rigid body (Figure 192);
Click "View Type" in the upper left corner of the software, click the reference video option (as shown in Figure 193), and click the screen after the reference video (as shown in Figure 194);
Click the "Calibration" button at the bottom of the software, and the calibration box will pop up (as shown in Figure 195 and 196);
According to the calibration, place the T-rod in the reference video range and click "Start calibration";
Click the freeze frame (as shown in Figure 197), and click the corresponding Marker ball on the T-bar in sequence in the reference video according to the marker name in the right attribute bar of XINGYING software (as shown in Figure 198). After clicking, the marker ball turns white (as shown in Figure 199).Note that the markerids on the Markerset are clicked in the order;
Click "Add current frame" to complete the calibration of this frame (Figure 200).The number at "Add frame number" in the pop-up video calibration window will automatically add one (Figure 201);
Move the T-bar to a different position and continue with steps 7 and 8 (6 or more times until "complete calibration" appears).The position of the T-bar must be in the center area of the field. Ensure that the data is collected in the upper left corner, lower left corner, upper right corner, lower right corner, and over and near the center area of the field.In this way, the rigid body on the reference video corresponds to the actual rigid body more accurately;
When the button to complete calibration appears, click "Complete calibration" (Figure 202);
Save the calibration file again. Switch the view to a dual view in the software to display the 3D view, and you can see the corresponding effect of the T-shaped calibration rod in the reference video and the rigid body in the 3D view (Figure 203).
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