Wearable Eye-Tracking Display With Brightness-Adaptive Gaze Input
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Solution Overview
Problem
Existing electronic devices struggle to accurately and efficiently recognize user gaze data for enhanced user interaction in extended reality environments, particularly in varying brightness and illumination conditions.
Innovation Solution
A wearable device equipped with eye-tracking cameras and displays, which adjusts the size of the gaze recognition area based on overall brightness levels and user state information to determine valid gaze inputs, enabling precise interaction with virtual objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gaze recognition area size is fixed, then the device structure is simple, but the gaze recognition accuracy deteriorates in varying brightness conditions
Solution Approach 1:
The patent implements dynamic adjustment of the gaze recognition area size based on real-time brightness level detection. The processor adjusts the area size dynamically - enlarging it when brightness is low to capture more gaze data points, and reducing it when brightness is high to maintain precision. This dynamic adaptation resolves the contradiction by making the recognition area flexible rather than fixed, improving accuracy across varying brightness conditions without requiring multiple hardware components.
Solution Approach 2:
The patent changes the parameter of gaze recognition area size based on the brightness level parameter. When the brightness level changes, the system automatically adjusts the area size parameter to optimize gaze recognition. This parameter-based adaptation allows the system to maintain high measurement precision across different lighting conditions while using a single adjustable mechanism rather than complex multi-component systems.
2Quantity of substance
If the gaze recognition area size is increased to capture more gaze data, then the gaze data quantity improves, but the precision of gaze point identification deteriorates
Solution Approach 1:
The system dynamically adjusts the gaze recognition area size based on brightness conditions. In low brightness environments, the area is enlarged to capture sufficient gaze data quantity for reliable recognition. In high brightness environments, the area is reduced to maintain precise gaze point identification. This dynamic sizing strategy resolves the contradiction by adapting the area size to environmental conditions, ensuring both adequate data quantity and sufficient precision are achieved appropriately.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the gaze recognition area size according to brightness level parameters. The system monitors brightness and automatically modifies the area size parameter to optimize the balance between data quantity and precision. This parameter-based control enables the system to achieve the desired gaze data quantity while maintaining identification precision through adaptive parameter adjustment rather than fixed settings.
3Adaptability or versatility
If gaze recognition is enabled in all screen regions, then the user interaction versatility improves, but false recognition in low brightness areas increases
Solution Approach 1:
The patent applies local quality by differentiating the gaze recognition characteristics across different screen regions based on brightness levels. Instead of applying a uniform recognition threshold across the entire screen, the system adjusts the recognition parameters locally - using more lenient criteria in darker regions to maintain versatility while preventing false recognition, and stricter criteria in brighter regions. This local adaptation resolves the contradiction by allowing versatile interaction across all screen areas while maintaining reliability through region-specific optimization.
Solution Approach 2:
The system changes recognition parameters dynamically based on the brightness characteristics of different screen regions. When the display brightness is low in certain areas, the system adjusts the gaze recognition parameters for those regions to prevent false positive detections while still allowing valid interactions. This parameter adaptation enables the system to maintain high user interaction versatility across the entire screen while preserving gaze recognition reliability by adjusting parameters according to local brightness conditions.
Data Source
AI summary
A wearable device according to an embodiment includes: at least one camera configured for eye tracking, at least one display configured to be aligned with eyes of a user wearing the wearable device, and at least one processor comprising processing circuitry. At least one processor, individually and/or collectively, is configured to: control the wearable device to display a screen on the at least one display; obtain gaze data related to an object in the screen through the at least one camera; determine whether to recognize the gaze data as an input for the object, using an area for the object that has size set based on an overall brightness level of the screen; and execute a function provided from the object based on the gaze data recognized as the input.


