Dynamic Font Size Adjustment via Facial Recognition
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Solution Overview
Problem
Users with presbyopia face difficulties in focusing on electronic visual displays, especially when they are not wearing their reading glasses, leading to eyestrain, and existing solutions require cumbersome navigation through menus to adjust font sizes.
Innovation Solution
A device with a digital camera and facial recognition engine that captures images of the user to detect the presence of glasses and dynamically adjusts the font size of the display, setting it to larger if glasses are not detected and normal if they are, to enhance readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual menu navigation is used to adjust font size, then font size can be changed, but the process becomes burdensome and time-consuming
Solution Approach 1:
The system automatically detects whether the user is wearing glasses using facial recognition technology and autonomously adjusts the font size accordingly, eliminating the need for manual intervention. The device serves itself by monitoring user state and making appropriate display adjustments without requiring the user to navigate menus or manually change settings.
2Ease of operation
If fixed large font size is used, then readability is improved for presbyopic users, but normal viewing experience is compromised when glasses are worn
Solution Approach 1:
The font size is made dynamic rather than fixed, automatically adjusting based on the detected user state (wearing glasses or not). The system continuously monitors whether the user is wearing corrective lenses and adapts the display parameters in real-time, transitioning between large and normal font sizes as needed to maintain optimal readability across different viewing conditions.
Solution Approach 2:
The display parameter (font size) is changed based on detected conditions. When the facial recognition system detects that the user is not wearing glasses, the font size parameter is increased to improve readability. When glasses are detected, the font size returns to normal, allowing the system to adapt display parameters dynamically to user needs.
3Extent of automation
If automatic facial recognition is implemented, then font size adjusts automatically, but device complexity increases
Solution Approach 1:
The facial recognition system serves multiple functions beyond just font size adjustment, including user identification, authentication, and various other smartphone functions. By integrating the facial recognition capability into the existing device architecture, the additional complexity is amortized across multiple uses, making the automatic font size adjustment feature less burdensome in terms of overall device complexity.
Data Source
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AI summary
A method (300) and device for visual compensation captures (330) an image using an imager, detects (360) whether eyeglasses are present in the image, and sets (367) an electronic visual display to a normal font size, if eyeglasses are detected as present in the image. If eyeglasses are not detected as present in the image, the electronic visual display is set (363) to a larger font size. The method and device can be triggered (320) (for example) by an incoming call or message, by a touch screen activation, a key press, or by a sensed motion of the device. The method can be repeated from time to time to detect whether a user has taken off eyeglasses (or put on eyeglasses) after the first image capture. The method and device compensates for users with presbyopia (and some other types of visual impairments) who intermittently wear glasses.