Method of matching image features with reference features

US9400941B2 · kind B2 · utility

Assignee

• Metaio GmbH · DE

Inventors

• Daniel Kurz · Munich, DE
• Peter Meier · Munich, DE

Key dates

• Filing date: Aug 31, 2011
• Grant date: Jul 26, 2016
• Expiry date: Dec 16, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30244
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method of matching image features with reference features comprises the steps of providing a current image, providing a set of reference features, wherein each of the reference features comprises at least one first parameter which is at least partially indicative of a position and/or orientation of the reference feature with respect to a global coordinate system, wherein the global coordinate system is an earth coordinate system or an object coordinate system, or at least partially indicative of a position of the reference feature with respect to an altitude, detecting at least one feature in the current image in a feature detection process, associating with the detected feature at least one second parameter which is at least partially indicative of a position and/or orientation of the detected feature, or which is at least partially indicative of a position of the detected feature with respect to an altitude, and matching the detected feature with a reference feature by determining a similarity measure.