Patent · US Expired

Method and device for optically detecting the open state of a vehicle door

US7457437B2 · kind B2 · utility

5Cited by

4References

23Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ludwig Ertl · Regensburg, DE
Thorsten Köhler · Deuerling, DE
Reinhard Rosl · Bernhardswald, DE
Dirk Zittlau · Stöckelsberg, DE

Key dates

Filing date	Jul 3, 2002
Grant date	Nov 25, 2008
Priority date	—
Expiry date	May 25, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG06V20/59
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for detecting the position of an object within the interior or a vehicle equipped with a door (4). The inventive method is characterized by recording a sequence of images by means of a camera (2) and calculating the actual position of the object by electronically evaluating the images of the sequence of images, and generating a differential image by comparing an actual recorded image with a previously stored image. The position of the object is calculated on the basis of the differential image. To achieve this, the camera (2) records images of the door (4). The images of the door (4) are evaluated and the open state of the door (4) is established on the basis of the differential image between the closed state and the opened state.

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