Target discrimination utilizing median filters
US4603430 Patents
Apparatus for processing applied signals indicative of an image scene in order to provide output signals repre sentative of objects in the scene whose sizes are within a predetermined size range. Combinations of median and anti-median filters are employed in serial and paral lel configurations to produce the desired size filtering. The basic system comprises first filter means for provid ing first output signals indicative of objects whose sizes are within a first preselected size range. Second filter means are employed which provide second output sig nals indicative of objects whose sizes are
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