Patent
Real-time recursive filter to identify weather events using traffic CCTV video
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TLDR
In this paper, a Bessel filter is used to compute a constant value for each frame in a given frame and sum a predetermined number of respective frames from the camera to determine rapid motion in the scene.Abstract:
A program is implemented on a processor for executing the following steps: receiving images of a scene comprising successive frames from a camera, each frame including an array of pixels; filtering intensities of the array of pixels in a respective frame by using a Bessel Filter to compute a constant value for the respective frame; and summing a predetermined number of respective frames from the camera to determine rapid motion in the scene. The filter includes a Bessel filter, which is an n-pole recursive digital filter, where n is a positive integer.read more
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