Kalman filter preprocessor

Details Kalman filter preprocessor Kalman filter preprocessor

1982-06-15

1985-04-16

Corbin, John K.

350403, G02B 2728, G02F 101

Patent

active

045112193

ABSTRACT:
An optical signal preprocessor for computing the input functions required to utilize an extended Kalman filter algorithm. An incoming stream of time-varying images is integrated to form a reference image, which is then subtracted from each subsequently sampled image. The result is digitized for use with the extended Kalman filter algorithm. The reference image is also fed through a spatial filter and then input to two light valve image subtraction systems to produce difference image approximations of two partial derivatives. These derivative functions are then digitized and utilized as inputs to the extended Kalman filter algorithm.

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patent: 4168524 (1979-09-01), Soltz et al.
patent: 4357676 (1982-11-01), Brown

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