Technical Specs

Under normal conditions, such as the absence of mechanical impact on the rc_visard, self-calibration should

never occur. Self-calibration allows the rc_visard to work normally even after misalignment is detected, since

it is automatically corrected. Nevertheless, checking camera calibration manually is recommended if the update

counter is not 0.

6.6.2 Calibration process

Manual calibration can be done through the Web GUI’s Camera Calibration tab. This tab provides a wizard to

guide the user through the calibration process.

Note: Camera calibration is normally unnecessary since the rc_visard is calibrated at production time. There-

fore, calibration is only required after strong mechanical impacts, such as occur when dropping the rc_visard.

Step 1: Calibration settings

The quality of camera calibration heavily depends on the quality of the calibration grid. Calibration grids for the

rc_visard can be obtained from Roboception.

Fig. 6.6.1: Calibration settings

The Camera calibration component has to be selected in the Web GUI (Section 4.5) to verify or perform camera

calibration. In the ﬁrst step, the width and height of the grid must be speciﬁed as shown in the screenshot above.

The Next button proceeds to the next step.

6.6. Camera calibration 49