Content position calibration in head worn computing

• US 9,746,686 B2
• Filed: 05/19/2014
• Issued: 08/29/2017
• Est. Priority Date: 05/19/2014
• Status: Active Grant

• Current Assignee: Mentor Acquisition One, LLC (Magic Leap, Inc.)
• Original Assignee: Osterhout Design Group
• Inventors: Haddick, John D.
• Primary Examiner(s): Buttram, Todd
• Application Number:
  US14/280,740
• Publication Number:
  US 20150331241A1
• Time in Patent Office: 1,198 Days
• Field of Search: 345629
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 30/25 using polarisation techniques
• CPC Class Codes: G06T 19/006 Mixed reality object pose determination, tracking or camera calibration for mixed reality G06T7/00
• CPC Class Codes: G06T 5/00 Image enhancement or restoration
• CPC Class Codes: G06T 7/80 Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration

Abstract

Aspects of the present invention relate to methods and systems for calibrating the position of content in a see-through head-worn display.

Claims

1. A method of calibrating a head-worn see-through display, comprising:

capturing an image, from a camera secured to the head-worn see-through display of an eye of a person wearing the head-worn see-through display, wherein the image includes an image of an object in an environment proximate the head-worn see-through display;

enhancing an aspect of the image of the object to make the image of the object more apparent, forming an enhanced object image;

displaying the enhanced object image in the head-worn see-through display;

capturing a second image of the person'"'"'s eye while the enhanced object image is being displayed and determining, from the second image, a degree of overlap between the enhanced object image with the object in the environment; and

establishing a calibrated position for augmented reality content to be displayed in the head-worn see-through display based on the degree of overlap.

2. The method of claim 1, wherein the degree of overlap is determined by respective edges of the enhanced object image and the object in the environment.

3. The method of claim 1, wherein the degree of overlap is determined by an area of overlap between the enhanced object image and the object in the environment.

4. The method of claim 1, wherein the calibration position is used to position digital content that is displayed in the head-worn see-through display when the digital content is intended to be positionally associated with an identified object in the environment.

5. The method of claim 1, wherein the steps of capturing an image, enhancing, displaying, capturing a second image, and establishing are periodically re-run to form a new calibrated position.

6. The method of claim 1, wherein the steps of capturing an image, enhancing, displaying, capturing a second image, and establishing are automatically re-run to form a new calibrated position.

7. The method of claim 1, wherein the steps of capturing an image, enhancing, displaying, capturing a second image, and establishing are re-run upon request to form a new calibrated position.

8. The method of claim 1, wherein the camera is positioned to capture the image of the person'"'"'s eye such that there is a common optical axis at the eye of the person for the eye image capture and the display of digital content.