Patent ID: 8630497
Filing Date: 2014-01-14
Classification: G06F,G06K,G11B

Abstract:
1. A method of analyzing a segment of video comprising frames, the frames comprising pixels, the method comprising: extracting a respective line portion from a location on each frame of a plurality of frames of the segment of video, the location on each frame of the plurality of frames being defined by x-y pixel coordinates, each respective line portion comprising a portion of pixels of the respective frame of the plurality of frames, in which one of the frames of the plurality of frames is a reference frame; detecting a plurality of the line portions as corresponding to an object based on a comparing a measure of the differences of the pixels of the line portion of the plurality of line portions and the corresponding pixels of the reference frame to multiple thresholds, in which the multiple thresholds are determined using a reference pixel variation computed by a comparison of pixel differences between the line portion of the reference frame and a plurality of compared line portions of the plurality of frames; and determining a property of an event based on the plurality of line portions corresponding to the object, in which determining the property of the event comprises determining a size of the object based on the number of the multiple thresholds exceeded by the measure of the differences of the pixels of the line portion of the plurality of line portions and the corresponding pixels of the reference frame.