An analytic routine uses images from a cell phone, dash cam, or other portable electronic device to warn a driver that his/her vehicle is likely go through a red light, or fail to stop or sufficiently slow down at a stop sign or other stop signal. The analytic routine can be calibrated using relative sizes of a target in the first and second images, and apparent size of the target in the second image when at a time when the device is at an estimated or calculated distance to the target. Following calibration, the calibrated analytic routine uses information obtained from a third image to derive an estimated travel time to a second stop signal, and warns the driver to adjust a speed of the vehicle.
Traffic signal alarm device using images to calibrate distance
13.05.2025
Patent
Elektronische Ressource
Englisch
Traffic Signal Alarm Device Using Images to Calibrate Distance
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