How is the ADAS calibrated (what is the cross mark on the screen)?

In order to improve user experience, we designed an automated calibration process. When the ADAS is switched on, the calibration will automatically begin. A red cross mark means that the calibration is in progress, and it will be finished when the mark turns to blue. The automated calibration process can be adapted to most of the road types and you don’t need to manually adjust the camera. Other similar products only display an adjusting line on the screen and require users to manually calibrate the camera with the horizon, making the process complicating and dangerous.