Spatial filter system

Details Spatial filter system Spatial filter system

1981-03-20

1984-12-18

Shaw, Gareth D.

Boots, shoes, and leggings

G01S 730

Patent

active

044893906

ABSTRACT:
A spatial filter system for filtering a matrix of data values by an m.times.n matrix, where the m.times.n matrix is the product of a 1.times.n matrix and a m.times.a matrix. The system includes a first spatial filter adapated to filter each row of the data matrix with the 1.times.m matrix to provide a first filtered value matrix. The system also includes a second spatial filter adapted to filter each column of the first filtered value matrix with the m.times.1 matrix to provide a second filtered value matrix.

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patent: 3997973 (1976-12-01), Buss
patent: 4045795 (1977-08-01), Fletcher et al.
patent: 4092618 (1978-05-01), Guidoux
patent: 4194221 (1980-04-01), Stoffel
patent: 4264983 (1981-04-01), Miller
patent: 4267580 (1979-01-01), Bond et al.
Sakaue, "An Input-Weighted CCD Transversal Filter", 1977, pp. 391-396.
J. J. Otazo, E. W. Tung and R. R. Parenti, "Digital Filters for Infrared Target Acquisition Sensors", SPIE, Smart Sensors, (1980).
J. J. Otazo and R. R. Parenti, "Digital Filters for the Detection of Resolved and Unresolved Targets Embedded in IR Scenes," Proceedings of the SPIE Technical Symposium East, (Apr. 1979), Smart Sensors, vol. 178, p. 13ff.
J. T. Carlo and J. E. Hall, "Spatial Filtering Using 3x3 Kernal Convolutions," SPIE, vol. 178, Smart Sensors, (1979), pp. 154-161.

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