What is Blindsight's Risk Level?
The Risk Level is a summary of the potential danger involved in an interaction between a vehicle and a person detected by Blindsight. Higher risk levels mean an interaction has a greater likelihood of leading to an accident.
How is the Risk Level determined?
Risk levels are calculated based on the following metrics:
Distance: Estimated distance (m) of person from camera
Direction: Estimated direction that person’s body is facing relative to camera
Gaze: Estimated direction that person’s head is facing relative to camera
Speed: The estimated speed of the interaction (this can be due to either the person or vehicle moving, or both)
Not Upright: Estimated likelihood that the person is not standing upright (e.g. bending, squatting, laying)
NOTE: Speed carries a lot of importance. A scalar is applied that will increase the overall risk if speed is positive, or decrease risk if speed is negative (i.e. the person is moving away)
Examples of how risk is calculated for an interaction are shown below:
Not all metrics are always used. The below diagram shows at what distances each metric is important. A green tick means that metric is considered when calculating risk at that distance.
Note that the baseline level of risk increases as the distance between the vehicle and the person decreases.
