Patent Document ID: 9607402
Application ID: 15150280
Patent Status: 1

Claim One:
1. A method, comprising: receiving input data representing a field of view of a traffic detection zone; analyzing the input data within a computing environment in one or more data processing modules executed in conjunction with at least one specifically-configured processor, the one or more data processing modules configured to automatically calibrate a pedestrian speed in the field of view for traffic intersection control, by: identifying a location of a stop bar and lane lines in a region of interest in the field of view, determining an intersection of the lane lines with the stop bar to develop coordinates of the region of interest in the field of view and identify a vertical orientation of the lane lines relative to the stop bar, computing features of an image inside the region of interest that include one or more of edge gradients, thresholded grayscale pixels, and feature projections to differentiate between image pixels, measuring an inter-lane distance between the image pixels using a lane line width and the vertical orientation of the lane lines relative to the stop bar to map the image pixels to an actual distance traveled of a pedestrian in the region of interest, and calculating a pedestrian speed from the actual distance traveled that is calibrated with the region of interest; and generating, as output data, the pedestrian speed.