US 10,321,055 B2Granted

Low power eye tracking system and method

AssigneeSeeing Machines Limited

InventorTimothy James Henry Edwards

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method of reducing the illumination power requirements for an object tracking system, the method including the steps of: (a) determining a current location of the object within a scene; (b) for a future frame: determining a band around the object of interest; determining a start and stop time for when the rolling shutter detector will be sampling the band; and illuminating the object only while the rolling shutter detector is sampling the band; (c) for a future frame predicting the location of the object relative to the tracking system; determining the ambient light levels; and illuminating the object with the minimum optical power required for the object to be imaged suitably for tracking.

Claims11

Dependent claims

A method of varying the illumination power requirements for an object tracking system, the method including the steps of:

(a) controlling a drive current of one or more illumination devices to illuminate the object with a beam of radiation having a predefined beam shape for a predetermined time period at a predefined power level;
(b) during the predetermined time period, controlling a camera to capture an image of the illuminated object within a scene;
(c) processing the image to estimate the three dimensional location of the object, including the distance of the object from the camera;
and
(d) based on the estimated distance of the object from the camera, selectively varying a start and/or end time of the predetermined time period for every subsequent frame or for a plurality of subsets of frames of a sequence of image frames.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/916,449Filed 3 Sep 2014
Priority: AU 20139033533 Sep 2013
Published: US 2016/0198091 A17 Jul 2016
Granted: 11 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 1/3206
Power management, i.e. event-based initiation of a power-saving mode: monitoring of events, devices or parameters that trigger a change in power…
G06F 3/013
Arrangements for interaction with the human body, e.g. for user immersion in virtual reality: eye tracking input arrangements
G06V 40/166
Detection; Localisation; Normalisation: using acquisition arrangements
G06V 40/19
Eye characteristics, e.g. of the iris: sensors therefor

Family

US 2016/0198091 A1Pre-grant publication · published 7 Jul 2016
US 10,321,055 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key