Gaze-Based Screen Content Scaling for Readability
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Solution Overview
Problem
Conventional assistive technologies that expand the screen to aid users with poor vision often lose the overall structure, making navigation difficult due to uniform scaling of the entire screen content.
Innovation Solution
A system that determines a user's distance from the screen and focuses on specific on-screen content using gaze tracking, modifying only the attributes such as size or zoom factor of the focal point to enhance readability while preserving the rest of the screen's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the entire screen is expanded to aid users with poor vision, then readability of text and objects is improved, but the overall structure of the screen is lost making navigation difficult
Solution Approach 1:
The patent applies local quality by selectively enlarging only the region of interest (where the user is gazing) while keeping the rest of the screen at normal size. This is achieved through gaze tracking technology that identifies the user's focus point and dynamically scales only that specific area, thereby improving readability of the focused content without disrupting the overall screen structure and navigation.
Solution Approach 2:
The patent segments the screen into multiple regions: a focused region (enlarged) and a non-focused region (normal size). This segmentation allows different parts of the screen to serve different functions - the focused region provides enhanced readability while the non-focused region maintains contextual overview and navigation capability.
2Area of stationary object
If the entire screen is expanded uniformly, then all content becomes more visible, but the screen resolution effectively decreases making detailed viewing difficult
Solution Approach 1:
The patent implements dynamic scaling where the magnification level is not fixed but changes in real-time based on the user's gaze position and duration. The system continuously adjusts which region is enlarged and by what factor, allowing users to dynamically explore different areas of the screen at high detail while maintaining an overview of the entire screen structure.
Solution Approach 2:
Instead of uniform expansion, the patent applies local quality enhancement by selectively magnifying only the gazed-at region. This allows high-detail viewing of specific content elements while preserving the ability to see the overall screen layout and navigate to other areas, effectively providing both detailed viewing and contextual awareness simultaneously.
Data Source
AI summary
Systems, methods, and computer program products to perform an operation to enhance readability of on-screen objects, the operation comprising determining a distance of a user from a screen displaying a plurality of objects, monitoring, by a gaze module, a gaze of the user, determining a focal point of the gaze of the user relative to the screen, and modifying, based on the distance and the focal point, one or more attributes of a first object corresponding to the focal point, wherein the one or more attributes comprise at least one of a size of the first object and a zoom factor applied to the first object.