Head-Mounted Display Automatic Positioning via Facial Landmarks
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Solution Overview
Problem
Head-mounted displays are challenging to position and maintain in a user-preferred orientation, especially when worn or secured to headgear, as they can be displaced by external forces or intentionally moved, requiring manual adjustment that is time-consuming and often requires the use of hands.
Innovation Solution
A wearable computing device with a display boom and actuators, coupled to a computer processor that uses optical and audio inputs to automatically adjust and maintain the display's position and orientation based on user-defined preferences, utilizing facial landmarks and voice or gesture commands to reposition the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the head-mounted display is manually adjusted to a user-preferred position, then the display positioning accuracy is improved, but the time required for adjustment and the need for hand operation increase
Solution Approach 1:
The system automatically detects the user's preferred display position using optical sensors and facial landmark recognition, then self-adjusts the display position and orientation without requiring manual intervention. The actuator system autonomously maintains the optimal position by continuously monitoring and making corrections as needed.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated system combining optical sensors, computer vision algorithms for facial landmark detection, and an actuator mechanism. This substitution eliminates the need for hands-on positioning while achieving precise display alignment through automated detection and adjustment.
2Ease of operation
If the head-mounted display is secured to headgear for hands-free use, then the ease of operation is improved, but the display stability deteriorates due to displacement from external forces
Solution Approach 1:
The system continuously monitors the display position relative to the user's face using optical sensors and facial landmark recognition. When displacement is detected (caused by wind, movement, or other external forces), the feedback loop triggers automatic correction through the actuator system, which adjusts the display back to the optimal position without requiring user intervention.
Solution Approach 2:
The display positioning system transitions from a static fixed position to a dynamic adaptive position. The actuator mechanism enables continuous real-time adjustment of the display position and orientation, allowing the system to adapt to changing conditions such as user movement, headgear displacement, or environmental factors while maintaining optimal viewing position.
3Measurement precision
If the display is positioned close to the user's face for optimal viewing, then the viewing quality is improved, but the field of view obstruction increases
Solution Approach 1:
The system dynamically adjusts not only the display position but also its orientation and tilt angles. By controlling multiple degrees of freedom, the display can be positioned at optimal distances while angling it to minimize obstruction of the user's natural field of view, achieving both viewing quality and situational awareness.
Solution Approach 2:
The patent utilizes multi-dimensional positioning including x-y-z coordinates plus rotational angles around multiple axes. This six-degree-of-freedom adjustment capability allows the display to be positioned in three-dimensional space and oriented at precise angles, enabling optimal viewing distance while minimizing field of view blockage through strategic angular positioning.
Data Source
AI summary
Systems and methods are provided for automatically positioning a head-mounted display. The head-mounted display allows for hands-free engagement between a user and a wearable display. The automatic positioning may align the display with a landmark on the user, such as the user's eye or the user's iris, or with other components of the wearable display. User preferences for the position of the display may be saved for recall during later use.