Enhanced contrast augmented reality (AR) tags for visual fiducial system

Patent metadata

Field	Value
Publication number	US-11513360-B2
Application number	US-202016932696-A
Country	US
Kind code	B2
Filing date	Jul 17, 2020
Priority date	Jul 17, 2020
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

Systems and methods are provided for improved visual fiducials and detection. A plurality of high-contrast visual fiducials are disposed within an environment (e.g., a vehicle interior). Each high-contrast visual fiducial comprises a pattern layer disposed on a translucent base, the pattern layer comprising an opaque material with one or more pattern components disposed therein. The high-contrast visual fiducials are configured to enable light to pass through the translucent base and through the one or more pattern components of the pattern layer. One or more wearable devices can be configured to detect light passing through the pattern components, the wearable devices communicatively coupled to a detection system configured to decode the received light pattern.

First claim

What is claimed is:

1. A high-contrast visual fiducial comprising:
a translucent base comprising a plurality of light tubes, a plurality of waveguides, or a combination of both; and
a pattern layer disposed on the translucent base, the pattern layer comprising a plurality of pattern components;
wherein the translucent base is configured to route light through the plurality of pattern components.

2. The high-contrast visual fiducial of claim 1 , wherein the pattern layer comprises an opaque material configured to block light from passing through the pattern layer.

3. The high-contrast visual fiducial of claim 1 , further comprising one or more optical fibers configured to route light from an external source to the translucent base, wherein the routed light from the optical fiber passes through the plurality of pattern components.

4. The high-contrast visual fiducial of claim 1 , further comprising one or more light sources integrated within the translucent base and configured to emit light through the plurality of pattern components.

5. A method comprising:
disposing a plurality of high-contrast visual fiducials within a vehicle interior;
receiving, from a first set of cameras of a wearable device, a first plurality of fiducial data;
receiving, from a second set of cameras of the wearable device, a second plurality of fiducial data;
associating the first plurality of fiducial data and the second plurality of fiducial data; and
identifying the focus of attention of a person wearing the wearable device based on the associated first plurality of fiducial data and the second plurality of fiducial data;
wherein the high-contrast visual fiducials are configured to enable light to pass through one or more pattern components of a pattern disposed on a translucent base.

6. The method of claim 5 , wherein a first set of the high-contrast visual fiducials are configured to route light from an external source through the translucent base of each high-contrast visual fiducial.

7. The method of claim 6 , wherein the first set of high-contrast visual fiducials are disposed on a windshield of a vehicle.

8. The method of claim 6 , wherein the first set of high-contrast visual fiducials are disposed on a non-window portion of the vehicle interior, each high-contrast visual fiducial communicatively coupled to an anchor point disposed on a windshield of the vehicle configured to route light from the external source to the translucent base of each high-contrast visual fiducial.

9. The method of claim 5 , further comprising:
receiving from one or more light sensors lighting condition data;
for each light sensor, determining an amount of light detected by the light sensor based on the received lighting condition data from the respective light sensor;
determining, based on the determined amount of light, a lighting level;
determining a setting for one or more light sources of one or more high-contrast visual fiducials based on the determined amount of light; and
setting the one or more light sources to the determined setting.

Assignees

• Toyota Res Inst Inc

Inventors

• Yao Jonathan
• Brooks Daniel
• Pascual Vincent S

Classifications

• G06F3/013 Primary

  Eye tracking input arrangements (G06F3/015 takes precedence) · CPC title

• G02B2027/0187

  slaved to motion of at least a part of the body of the user, e.g. head, eye · CPC title

• G06K7/143

  Glyph-codes · CPC title

• G06F3/011

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G02B2027/0138

  comprising image capture systems, e.g. camera · CPC title