| Electronic image processing |
| The black and white image captured by the image acquisition sensor is analysed by image processing software. Firstly, the system scans the image for lane markers. If the system detects lane markers on both sides of the vehicle, it calculates the width and curvature of the lane. |
| In addition to this, the software calculates the position of the vehicle in the lane, i.e. the distance from the vehicle to the left or right lane marker and the angle of approach to the lane marker. The image processing software also assesses the quality of road marking recognition. |
| The warning point is determined from the calculated values and the known measurements of the vehicle. Different methods of calculation are used depending on what warning point is set on the MMI. The calculated values are also required to establish whether or not to deactivate the function temporarily due to the road geometry. |
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