H - Electricity – 04 – N
Patent
H - Electricity
04
N
354/163
H04N 7/18 (2006.01) G06E 3/00 (2006.01) G08B 13/194 (2006.01)
Patent
CA 1318726
ABSTRACT A method and apparatus for detecting innovations in a scene in an image of the type having a large array of pixels. The method comprises the step of generating a multitude of parallel signals representing the amount of light incident on a group of adjacent pixels (masks) and these signals may be considered as forming a n by one vector, Z, where n equals the number of pixels in the masks. L such groups of adjacent pixels or elementary masks are used to geometrically cover the entire image in parallel. The method further comprises the step of replicating the generating step a multitude of times to generate a multitude of Z vectors by taking multiple frames of observations of the image (scene). These Z vectors may be represented in the form Zk, where k equals 1,2,3,...,m, where m equals the number of replicates. Each of the Zk vectors are related to a vector .beta.k of three parameters by a measurement equation in a linear model framework, i.e. Zk = D.beta.k + ek, where ek is an additive noise term. In one embodiment, a solution of the linear model yields the best estimates of the parameters ?k = DTZk, where DT is a three by four matrix, ?k is a three by one vector, and Zk is a four by one vector of the measurements. ?k includes three components Uk, Ak and .beta.k. The values of Uk, Ak, and Bk are monitored over time, and a signal is generated whenever any one of these variables rises above a respective preset level.
600534
Grumman Aerospace Corporation
Mcfadden Fincham
LandOfFree
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