Patent · US Expired

Method for the independent detection of helicopter

US6818883B2 · kind B2 · utility

2Cited by

1References

12Claims

0Family size

Assignee

LFK-LENKFLUGKOERPERSYSTEME GMBH · DE

Inventors

Oliver Rockinger · Friedrichshafen, DE
Juergen Topp · Friedrichshafen, DE
Thomas Fechner · Günzburg, DE

Key dates

Filing date	Apr 24, 2003
Grant date	Nov 16, 2004
Priority date	—
Expiry date	Apr 24, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01V8/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for the detection of helicopters from a flying platform utilizes an imaging sensor. Relevant image regions of two successive images are subtracted from one another with respect to picture elements, and within the thus formed differential image, segments are identified by means of a threshold value process. Straight lines of the same orientation are adapted to the identified segments, and intersection points are determined for all such straight lines. Identification of a helicopter is made based on a bunching of the intersection points.

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