Method and device for determining gestures in the beam region of a projector

US9323341B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Georg Mrusek · Reutlingen, DE
• Tobias Hipp · Nuremberg, DE
• Reiner Schnitzer · Reutlingen, DE
• Frank Fischer · Pfaffen-Schwabenheim, DE
• Lutz Rauscher · Reutlingen, DE
• Christoph Delfs · Bretten, DE
• Ming-Chang Liu · San Jose, US
• Gael Pilard · Aspenhausiedlung, DE

Key dates

• Filing date: Jun 23, 2014
• Grant date: Apr 26, 2016
• Expiry date: Jun 23, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F3/017
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method for determining gestures in the beam region of a projector includes: projecting an image onto a surface with the aid of the projector, using light; measuring a first set of light intensities of light backscattered from the direction of the surface, under the influence of a gesture made in the beam region of the projector; assigning the measured light intensities to, in each instance, a position of the image projected by the projector; at a first time point, generating a first light intensity function over a second set of positions, which are assigned measured light intensities; at a second time point, generating at least one second light intensity function over the second set of positions; and determining the gesture made, based on the result of a comparison between the first and second light intensity functions.