Saccade-Based Radial UI Positioning for AR/VR
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Solution Overview
Problem
Existing smart device user interfaces, particularly in augmented and virtual reality, face issues with overshoot errors, accidental selections, and user fatigue due to fixed positioning of subsequent menus in response to saccade movements, which are not effectively addressed by traditional eye-tracking systems.
Innovation Solution
A saccade-based positioning method for radial user interfaces that dynamically determines the location of subsequent menus based on the velocity of eye movements, allowing for border crossing detection without prior fixation, thereby reducing selection errors and fatigue by placing subsequent menus either on the exterior border or at the saccade landing position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed positioning of subsequent menus is used in response to saccade movements, then implementation simplicity is maintained, but overshoot errors and accidental selections increase
Solution Approach 1:
The patent implements dynamic menu positioning by adjusting the location of subsequent menus based on the velocity characteristics of saccade movements. Instead of fixed positioning, the system calculates optimal menu locations in real-time based on eye movement dynamics, resolving the contradiction between implementation simplicity and selection accuracy.
Solution Approach 2:
The system uses feedback from eye-tracking data, specifically velocity measurements of saccade movements, to adjust menu positioning. This feedback mechanism allows the system to adapt menu locations to actual user eye movement patterns, reducing overshoot errors while maintaining reasonable implementation complexity.
2Reliability
If traditional eye-tracking systems with prior fixation requirements are used, then measurement reliability is improved, but user interaction speed decreases
Solution Approach 1:
The patent eliminates the requirement for prior fixation before saccade detection. By using velocity-based saccade detection without fixation prerequisites, the system performs the necessary measurement preparation in advance through continuous velocity monitoring, thereby improving interaction speed while maintaining measurement reliability.
Solution Approach 2:
The system changes the measurement parameter from fixation-based to velocity-based saccade detection. This parameter change allows the system to detect menu selection intent through velocity thresholds without requiring prolonged fixation, thus speeding up menu navigation while maintaining reliable eye-tracking measurements.
3Device complexity
If subsequent menus are positioned at fixed locations, then device complexity is reduced, but user fatigue increases
Solution Approach 1:
The patent implements dynamic menu positioning that adapts to user eye movement patterns. By calculating optimal menu locations based on saccade velocity and landing positions, the system reduces the cognitive and physical load on users, decreasing fatigue while maintaining manageable device complexity through algorithmic positioning.
Data Source
AI summary
A method of saccade-based positioning of a radial user interface includes performing operations while a first radial user interface is displayed on a display. The operations include (a) detecting a saccade movement based on eye-tracking data received from an eye-tracking system; (b) determining whether the saccade movement crosses a first region border corresponding to a first region of the first radial user interface; (c) determining a velocity of the saccade movement based on the eye-tracking data; and (d) dynamically determining a location for a subsequent radial user interface in response to the velocity and in response to determining that the saccade movement crosses the first region border. The method also includes displaying, on the display, the subsequent radial user interface at the location.