Patent · US Expired

Boolean filtering method and apparatus

US4482970A · kind A · utility

8Cited by
28References
7Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 6, 1981
Grant dateNov 13, 1984
Priority date—
Expiry dateNov 6, 2001

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06V10/255
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A filtering method and apparatus for discriminating targets from noise in space-time data consisting of a plurality of binary data frames, each containing an equal number of points, are disclosed. Noise filtering for target detection is performed by recursively determining whether the points of a sequence of M of the binary data frames form at least one continuous string, or at the next highest level of discrimination, monotonic continuous string by logically comparing each binary data frame with the two binary data frames which precede and follow it on a point by point basis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.