Patent · US Active

Method and device for tracking-based visibility range estimation

US9727792B2 · kind B2 · utility

2Cited by

0References

27Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Johannes Martini · Wiesbaden, DE
Ulrich Stopper · Gerlingen, DE
Stephan Lenor · Stuttgart, DE
Stefan Weber · Nesselnbach, CH

Key dates

Filing date	May 4, 2015
Grant date	Aug 8, 2017
Priority date	—
Expiry date	May 4, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06V20/56
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method is provided for tracking-based visibility range estimation for a vehicle, the method including a step of tracking an object detected in a first image at a first point in time and in a second image at a second point in time, a step of ascertaining a first object luminance of the object and a first distance to the object at the first point in time and also ascertaining a second object luminance of the object and a second distance to the object at the second point in time, and also a step of determining an atmospheric extinction coefficient using the first object luminance, the second object luminance, the first distance, and the second distance, the atmospheric extinction coefficient being in direct correlation to visibility range.

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