MR Headset Imaging and Illumination Layout for Object Tracking
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Solution Overview
Problem
MR headsets face challenges in accurately detecting user interactions due to varying lighting conditions and audio disruptions, which affect immersion and engagement with mixed-reality content.
Innovation Solution
Incorporating a resonant frequency dampening channel within the MR headset housing to manage airflow and improve cooling, along with an object-tracking assembly featuring aligned imaging devices and illumination devices to enhance ambient lighting for accurate object tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If imaging devices are aligned along a first axis with illumination devices on a perpendicular second axis, then object tracking accuracy is improved, but device complexity increases
Solution Approach 1:
The patent positions illumination devices on a second axis that is perpendicular to the first axis where imaging devices are aligned. This three-dimensional orthogonal arrangement allows illumination to occur from a different spatial dimension than imaging, improving object tracking accuracy by ensuring proper lighting conditions without interfering with the imaging axis while maintaining a relatively compact form factor.
2Measurement precision
If ambient lighting conditions are enhanced for object tracking, then interaction detection accuracy is improved, but energy consumption increases
Solution Approach 1:
The illumination devices are positioned to provide localized lighting specifically in the object tracking field of view, rather than illuminating the entire environment. This targeted illumination approach improves interaction detection accuracy in the critical tracking area while minimizing overall energy consumption by avoiding unnecessary illumination in other regions.
3Measurement precision
If multiple imaging devices are used for comprehensive object tracking, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses multiple imaging devices aligned along a first axis to capture images from different positions, improving object tracking accuracy through multi-perspective data. This linear arrangement along one axis is complemented by illumination devices on a perpendicular axis, creating a coordinated system that achieves comprehensive tracking coverage while maintaining a structured and manageable component layout.
Data Source
AI summary
A housing of an MR device includes one or more displays within an interior surface of the housing configured to cause presentation of an extended reality environment. And the housing includes an object-tracking assembly disposed on an exterior surface of the housing. The object-tracking assembly includes a plurality of imaging devices aligned along a first axis, and an illumination device aligned along a second axis, perpendicular to the first axis, the illumination device disposed at a predetermined intermediate distance between at least two respective imaging devices of the plurality of imaging devices. While the MR head-wearable device is performing operations, the object-tracking assembly is configured to determine, based on imaging data obtained by the plurality of imaging devices while the illuminating device is generating ambient lighting conditions, that the obtained imaging data satisfies an object-tracking threshold for causing presentation of a tracked object via the one or more displays.