Eye Tracking Map Feedback for Alignment Precision
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Solution Overview
Problem
Eye tracking based communication programs face alignment issues when users' eyes do not line up with the interpreted location, particularly during the learning phase, necessitating a feedback system for accurate eye positioning and movement tracking.
Innovation Solution
A real-time eye tracking feedback system utilizing an eye-tracking map and pointer, which provides dynamic alignment feedback through a circular profile representing the eyeball and pupil position, configurable for various skill levels, with options for transparency blending, color modification, and positioning adjustments to minimize interference with the user interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If eye tracking cameras are used to track user eye positioning and movement, then the ability to enable communication for individuals with limited mobility is improved, but alignment errors occur when users' eyes do not line up with the interpreted location
Solution Approach 1:
The patent implements a feedback mechanism by displaying an eye tracking map that shows the user's actual eye position relative to the interpreted focal point on the screen. This visual feedback allows users to see misalignment errors and adjust their eye positioning accordingly, thereby improving measurement precision while maintaining ease of operation for individuals with limited mobility.
Solution Approach 2:
The eye tracking map serves as an intermediary element between the eye tracking cameras and the user interface. It translates raw camera data into a visual representation that users can understand and act upon, helping them correct alignment errors without directly exposing the complexity of the tracking system.
2Measurement precision
If feedback systems are added to provide real-time eye positioning information, then alignment accuracy is improved, but device complexity increases
Solution Approach 1:
The patent creates a simplified copy or representation of the eye positioning data through the eye tracking map. Instead of processing and displaying raw camera coordinates, the system generates a visual map that replicates the essential alignment information in an easily interpretable format, reducing the perceived complexity while maintaining precision.
3Measurement precision
If eye tracking maps are displayed to provide alignment feedback, then user alignment and skill mastery are enhanced, but interference with the user interface may occur
Solution Approach 1:
The patent utilizes color changes in the eye tracking map to convey alignment information efficiently. By using distinct colors to indicate different alignment states (e.g., accurate vs. inaccurate positioning), the system provides rich feedback while maintaining visual clarity and minimizing interference with the main user interface content.
Data Source
AI summary
A method of real-time eye tracking feedback with an eye-movement tracking camera includes receiving a left eye movement transform, a right eye movement transform, and gaze direction information from a user's face and user's eyes. An eye tracking map is constructed including the left eye movement transform and the right eye movement transform. The eye tracking map is displayed with the left eye movement information, the right eye movement information, and the gaze direction information on a device screen. Feedback is provided to the user related the left eye movement transform, the right eye movement transform, and the gaze direction information.