Periocular Calibration for Mixed Reality Headset Shift Compensation

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Solution Overview

Problem

Existing virtual, augmented, and mixed reality technologies face challenges in providing a realistic and immersive visual experience due to the potential misalignment and movement of head-mounted displays relative to the user's head, leading to unstable imaging and eye strain.

Innovation Solution

A wearable device with an inward-facing imaging system tracks periocular features to determine the relative position of the display to the user's face, adjusting rendering locations and parameters to maintain alignment and provide a realistic presentation, even when the display shifts or tilts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If head-mounted display is worn by user, then virtual reality experience is provided, but misalignment and movement relative to user's head occurs leading to unstable imaging

Engineering Contradiction:

Improveimaging stabilityVSAvoiddisplay position relative to face

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The system continuously captures images of the periocular region, detects periocular features, determines relative position changes, and adjusts rendering locations in real-time based on this feedback loop, maintaining stable imaging despite device movement

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The wearable device performs self-calibration by using its own imaging system to detect its relative position to the user's face and automatically adjusts rendering parameters without requiring external calibration equipment or user intervention

Inventive Principle:

Principle #25Self-service

2Manufacturing precision

If rendering location is adjusted to compensate for device movement, then realistic presentation is maintained, but system complexity increases

Engineering Contradiction:

Improverendering location accuracyVSAvoidcalibration system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system replaces complex mechanical calibration mechanisms with computational methods, using image processing and algorithmic rendering adjustments based on detected periocular feature positions

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The inward-facing imaging system serves as an intermediary that indirectly measures device position relative to the face by capturing periocular region images, avoiding the need for direct physical sensors on the display

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12481161B2Periocular test for mixed reality calibration

Publication Date: 2025.11.25 MAGIC LEAP INC

AI summary

A wearable device can include an inward-facing imaging system configured to acquire images of a user's periocular region. The wearable device can determine a relative position between the wearable device and the user's face based on the images acquired by the inward-facing imaging system. The relative position may be used to determine whether the user is wearing the wearable device, whether the wearable device fits the user, and/or whether an adjustment to a rendering location of a virtual object can be made to compensate for a deviation of the wearable device from its normal resting position relative to the user's face.