Patent · US Active

Multi-modal speed limit assistant

US8725394B2 · kind B2 · utility

9Cited by

1References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Claus Bahlmann · Princeton, US
Martin Pellkofer · Pentling, DE
Jan Giebel · Sigmarszell, DE
Gregory Baratoff · Schallstadt, DE

Key dates

Filing date	Oct 7, 2008
Grant date	May 13, 2014
Priority date	—
Expiry date	May 24, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60W2556/50
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A speed limit assistant (SLA) system includes a camera based SLA, a map based SLA, and a fusion unit. The camera based SLA is configured to determine a first set of probabilities for an input image, wherein the probabilities indicate how likely the image includes a discrete set of speed limit signs. The map based SLA is configured to determine a second set of probabilities for an input coordinate, wherein the probabilities indicate how likely the coordinate is to correspond to one of a discrete set of speed limits. The fusion unit is configured to perform a Bayesian fusion on the first and second set of probabilities to determine a final speed limit from the discrete set of speed limits.

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