Boots – shoes – and leggings
Patent
1994-04-12
1995-04-11
Voeltz, Emanuel T.
Boots, shoes, and leggings
348169, 348172, 348699, 382 48, 382 50, 382 58, G06K 938, G06K 920
Patent
active
054065011
ABSTRACT:
A method and device for use in detecting moving targets in a scene represented by a sequence of mutually registered images R ( . . . , R.sub.n-1, R.sub.n, R.sub.n+1, . . . ) over time wherein differential images D ( . . . , D.sub.n-1, D.sub.n, D.sub.n+1, . . . ) are derived from succeeding images R, and spatially low pass filtered to obtain a sequence of filtered differential images F ( . . . , F.sub.n-1, F.sub.n, D.sub.n+1, . . . ). For each pixel of a plurality of pixels (i,j) and for each of a plurality of directions (d.sub.x,d.sub.y), a sum of intensities is formed from a number of successive frames of the sequence of filtered differential images F.sub.n-m (m=0,1 . . . M) at pixel locations (i+md.sub.x,j+md.sub.y) located, as the image is further back in time, along the direction progressively outwards from the pixel. For each pixel of the plurality of pixels, an intensities is determined which represents for the maximum size among the sums among the plurality of directions, the intensity for each pixel collectively forming an image G.sub.n.
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Shah Kamini
U.S. Philips Corporation
Voeltz Emanuel T.
Weiss Richard A.
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