IP Library › Granted Patent US 12,265,664
Granted Patent B2
US 12,265,664 · App. 18/341,558 · Granted Apr 1, 2025

Shared augmented reality eyewear device with hand tracking alignment

Inventors: Georgios Evangelidis (Vienna, AT); Bernhard Jung (Perchtoldsdorf, AT); Ilteris Kaan Canberk (Marina Del Rey, CA); Daniel Wolf (Mödling, AT); Balázs Tóth (Budapest, HU); Márton Gergely Kajtár (Felsopakony, HU); Branislav Micusik (St.Andrae-Woerdern, AT)
Assignee: Snap Inc.
G06F3/017G06F3/012G06T7/248G06T7/74G06T2207/30196G06T2207/30204G06T2207/30241
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Quick Facts
Patent No.
US 12,265,664
App. No.
18/341,558
Filed
Jun 26, 2023
Granted
Apr 1, 2025
Kind
B2
Art Unit
2629
USPC
345/156
Abstract

A method for aligning coordinate systems of user devices in an augmented reality system using somatic points of a user's hand as alignment markers. Images captured from multiple user devices are used to align the reference coordinate systems of the user devices to a common reference coordinate system. In some examples, user devices capture images of a hand of a user and use object recognition to identify somatic points as alignment markers. The somatic points of a user device are translated to a common reference coordinate system determined by another user device.

Claims (48)

1. A method for aligning user devices in an extended Reality (XR) environment, comprising:

capturing, by a first user device of the user devices, first one or more positions of one or more somatic points of a hand of a user, the first one or more positions of the one or more somatic points in a first coordinate system of the first user device;

capturing, by a second user device of the user devices, second one or more positions of the one or more somatic points of the hand of the user, the second one or more positions in a second coordinate system of the second user device;

generating, by the first user device, a reference data set using the first one or more positions of the one or more somatic points in the first coordinate system;

transmitting, by the first user device, the reference data set to the second user device of the user devices;

receiving, by the second user device, the reference data set;

generating, by the second user device, a common reference coordinate system using the reference data set in the first coordinate system and the second one or more positions of the one or more somatic points in the second coordinate system; and

aligning, by the second user device, the second user device to the first user device by using the common reference coordinate system as the second coordinate system of the second user device.

2. The method for aligning user devices in an XR environment of claim 1 , wherein the somatic points comprise joints of the hand.

3. The method for aligning user devices in an XR environment of claim 1 , further comprising:

determining, by the first device, a first position of the first user using a pose tracker component of the first user device.

4. The method for aligning user devices in an XR environment of claim 3 , wherein the reference data set includes a 6 degrees of freedom measure from the pose tracker component.

5. The method for aligning user devices in an XR environment of claim 1 , further comprising:

performing, by the first device, object recognition to identify the one or more somatic points.

6. The method for aligning user devices in an XR environment of claim 5 , wherein the first user device captures a palm view of the hand and the second user device captures a backhand view of the hand.

7. The method for aligning user devices in an XR environment of claim 1 , wherein the first user device and the second user device are head-wearable apparatuses.

8. An extended Reality (XR) system, comprising:

a first user device comprising:

first one or more processors; and

a first memory storing first instructions that, when executed by the first one or more processors, cause the first user device to perform first operations comprising:

capturing first one or more positions of one or more somatic points of a hand of a user, the first one or more positions of the one or more somatic points in a first coordinate system of the first user device;

generating a reference data set using the first one or more positions of the one or more somatic points in the first coordinate system; and

transmitting the reference data set to a second user device of the user devices; and

the second user device, comprising:

second one or more processors; and

a second memory storing second instructions that, when executed by the second one or more processors, cause the second user device to perform second operations comprising:

capturing second one or more positions of the one or more somatic points of the hand of the user, the second positions in a second coordinate system of the second user device;

receiving, from the first user device, the reference data set;

generating a common reference coordinate system using the reference data set in the first coordinate system and the second one or more positions of the one or more somatic points, the second one or more positions in the second coordinate system; and

aligning the second device to the first user device by using the common reference coordinate system as the second coordinate system of the second user device.

9. The XR system of claim 8 , wherein the first user device and the second user device are head-wearable apparatuses.

10. The XR system of claim 8 , wherein the somatic points comprise joints of the hand.

11. The XR system of claim 8 , the first operations further comprising:

determining a position of the first user using a pose tracker component of the first user device.

12. The XR system of claim 8 , wherein the reference data set includes a 6 degrees of freedom measure from a pose tracker component of the second user device.

13. The XR system of claim 8 , the first operations further comprising:

performing object recognition to identify the somatic points.

14. The XR system of claim 8 , wherein the first user device captures a palm view of the hand and the second user device captures a backhand view of the hand.

15. A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to perform operations comprising:

capturing first one or more positions of one or more somatic points of a hand of a user, the first one or more positions in a first coordinate system of a first user device;

receiving, from a second user device, a reference data set in a second coordinate system of the second user device, the reference data set generated by the second user device using second one or more positions of the one or more somatic points of the hand of the user, the second one or more positions in the second coordinate system, the second one or more positions captured by the second user device;

generating a common reference coordinate system using the reference data set in the second coordinate system and the first one or more positions of the one or more somatic points, the first one or more positions in the first coordinate system; and

aligning the first user device to the second user device by using the common reference coordinate system as the first coordinate system of the first user device.

16. The non-transitory computer-readable storage medium of claim 15 , wherein the somatic points comprise joints of the hand.

17. The non-transitory computer-readable storage medium of claim 15 , wherein the reference data set includes a 6 degrees of freedom measure from a pose tracker component of the second user device.

18. The non-transitory computer-readable storage medium of claim 15 , wherein the first user device and the second user device use object recognition to identify the one or more somatic points.

19. The non-transitory computer-readable storage medium of claim 15 , wherein the first user device captures a backhand view of the hand and the second user device captures a palm view of the hand.

20. The non-transitory computer-readable storage medium of claim 15 , wherein the first user device and the second user device are head-wearable apparatuses.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2023
From: EVANGELIDIS, GEORGIOS; JUNG, BERNHARD; CANBERK, ILTERIS KAAN; WOLF, DANIEL; TÓTH, BALÁZS; KAJTÁR, MÁRTON GERGELY; MICUSIK, BRANISLAV
To: SNAP INC.
Reel/Frame 064063/0280 →
Priority Claims (1)
GR 20230100168 · Feb 28, 2023 · national
Continuity (1)
Related Publication 20240288946A1 · Aug 29, 2024
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