Patent · US Active

Determining a geometric parameter from a single image

US8896686B2 · kind B2 · utility

13Cited by

6References

19Claims

0Family size

Assignee

HERE GLOBAL B.V. · NL

Inventors

Xin Chen · Evanston, US
Roger B. Hui · Northbrook, US
Narayanan Alwar · Chicago, US

Key dates

Filing date	Jun 23, 2009
Grant date	Nov 25, 2014
Priority date	—
Expiry date	Jul 8, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30256
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Systems, devices, features, and methods for determining a geometric parameter from an image are disclosed. For example, one method for determining the geometric parameter is used to develop a navigation database. The method comprises determining calibration values corresponding to a camera mounted on a vehicle or a pedestrian. A plurality of images of geographic features are captured by the camera. A single image from the plurality of images is identified or selected. A geometric parameter of a region in the single image is determined based on the determined calibration values. For example, the geometric parameter is a real-world distance, such as a real-world length or width.

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