Patent ID: 8957788
Filing Date: 2015-02-17
Classification: G06K,G06T,G08G

Abstract:
1. A method of detecting a vehicle is reversing using a video camera directed towards the vehicle and operatively connected to a video processing system, the method comprising: a) acquiring a video stream including a set of one or more features of the vehicle, the video including a current frame and one or more sequential past frames; b) selecting a first feature from the set of one or more features; c) processing the selected first feature captured in the current frame relative to one or more of the sequential past frames and determining if the vehicle is reversing; and d) triggering an alarm if the vehicle is reversing, wherein step c) comprises: 1) processing the selected first feature captured in the current frame relative to one or more of the sequential past frames and determining if the vehicle is reversing; 2) generating an evidence vector associated with the current frame and one or more of the sequential past frames, the evidence vector associating the current frame and the one or more sequential past frames with the determination if the vehicle is reversing in step c1), and 3) applying temporal filtering, wherein the temporal filtering includes median filtering with sliding window sizes of N step d) comprises: triggering a stop alarm if the median of a latest N