Gaze-Actuated Interface Shadow Feedback Mechanism
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Solution Overview
Problem
Traditional graphical user interfaces using manual pointing devices, such as mice, are incompatible with emerging natural user input modalities like gaze-tracking, which require visual feedback for effective navigation and interaction.
Innovation Solution
A method providing visual feedback for gaze-based user-interface navigation by presenting a first image of a digital object, recognizing the user's gaze axis, computing the point of intersection, and displaying a second image offset from the intersection point, creating a shadowing effect to enhance interaction awareness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gaze-tracking input is used for natural user interaction, then ease of operation is improved, but visual feedback precision deteriorates
Solution Approach 1:
The patent applies feedback by displaying a second image (shadow) offset from the point of gaze intersection, providing visual feedback about the user's gaze position without requiring manual pointing devices. This feedback mechanism enables gaze-tracking interaction while maintaining visual precision through the offset shadow display that indicates where the user is looking.
Solution Approach 2:
The patent uses an offset shadow image as an intermediary between the user's gaze and the digital object. Instead of directly interacting with the object at the gaze point, the shadow serves as a mediator that provides visual confirmation of gaze position, enabling natural interaction while maintaining measurement precision through the shadow's displaced position.
2Measurement precision
If a mouse pointer is displayed to indicate position, then visual feedback precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces the mechanical pointing system (mouse and mouse pointer) with a gaze-based system. Instead of using manual movement to control a pointer, the user's natural gaze direction controls the interaction, substituting mechanical operation with natural ocular movement while maintaining visual feedback through the offset shadow.
Solution Approach 2:
The patent inverts the traditional approach by not displaying the indicator at the exact point of interaction. Instead of showing the pointer at the target location, it displays the shadow offset from the gaze intersection point, providing visual feedback about gaze position while enabling natural gaze-based operation without manual devices.
3Adaptability or versatility
If gaze axis recognition is implemented, then adaptability to natural input is improved, but device complexity increases
Solution Approach 1:
The system uses the user's own gaze as the input mechanism, requiring no external pointing devices. The gaze-tracking system leverages the user's natural ocular movement to control interaction, making the system adaptable to natural input while managing complexity through self-service operation where the user's gaze directly controls the interface.
Data Source
AI summary
A method to provide visual feedback for gazed-based user-interface navigation includes presenting, on a display, a first image representing a digital object available for user interaction, recognizing a user gaze axis, and computing a point of intersection of the user gaze axis through the first image. An offset distance between the point of intersection and a reference position of the first image then recognized, and a second image is presented on the display. The second image is presented displaced from the point of intersection by an amount dependent on the offset distance.