Reducing power consumption for time-of-flight depth imaging

US10841491B2 · kind B2 · utility

Assignee

• Analog Devices, Inc. · US

Inventors

• Charles MATHY · Burbank, US
• Sefa Demirtas · Malden, US
• Bin Huo · Wayland, US
• Dhruvesh Gajaria · North Reading, US
• Jonathan Goldberg · New York, US
• Nicolas Le Dortz · Grenoble, FR
• Tao Yu · Cambridge, US
• James Noraky · Cambridge, US

Key dates

• Filing date: Mar 14, 2017
• Grant date: Nov 17, 2020
• Expiry date: Feb 11, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N13/271
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Aspects of the embodiments are directed to passive depth determination. Initially, a high power depth map of a scene can be created. An object in the scene can be identified, such as a rigid body or other object or portion of an object. A series of lower power or RGB images can be captured. The object can be located in one or more of the lower power or RGB images. A change in the position of an object, represented by a set of pixels, can be determined. From the change in position of the object, a new depth of the object can be extrapolated. The extrapolated depth of the object can be used to update the high power depth map.