Boots – shoes – and leggings
Patent
1985-04-01
1988-01-12
Krass, Errol A.
Boots, shoes, and leggings
364518, 358126, H04N 718, G06G 748
Patent
active
047195843
ABSTRACT:
Target or scene tracking capability is provided by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame or a selected mode thereof. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.
REFERENCES:
patent: 3953670 (1976-04-01), Prince
patent: 4060830 (1977-11-01), Woolfson
patent: 4133004 (1979-01-01), Fitts
patent: 4189747 (1980-02-01), Funari
patent: 4213150 (1980-07-01), Robinson et al.
patent: 4283767 (1981-08-01), Rountree
patent: 4364089 (1982-12-01), Woolfson
patent: 4368456 (1983-01-01), Forse et al.
patent: 4553260 (1985-11-01), Belt et al.
Emerson Earl L.
Pope Gordon T.
Rue Arthur K.
Hughes Aircraft Company
Karambelas A. W.
Krass Errol A.
Mattson Brian M.
Taylor Ronald L.
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