| Abstract: | A method and system for temporal frequency analysis for identification of
unmanned aircraft systems. The method includes obtaining a sequence of
video image frames and providing a pixel from an output frame of the
video; generating a fluctuating pixel value vector; examining the
fluctuating pixel value vector over a period of time; obtaining the
frequency information present in the pixel fluctuations; summing the
frequency coefficients for the vectorized pixel values from the
fluctuating pixel value vector; obtaining an image representing a two
dimensional space based on the summed center frequency coefficients;
generating a series of still frames equal to a summation of the center
frequency coefficients for pixel variations; and combining the temporal
information into spatial locations in a matrix to provide a single image
containing the spatial and temporal information present in the sequence
of video image frame. |