Digital Ink Stroke Correction for Hand Tremor Accessibility
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Solution Overview
Problem
Current digital ink capturing and processing mechanisms do not provide accessibility to users with hand tremors, making it difficult for them to effectively use digital ink as a form of input or communication.
Innovation Solution
A system that detects digital ink input, assesses tremors by measuring discontinuities and irregularities, and applies corrections using machine-learning models to smooth, join, or straighten strokes, optimizing the digital ink for users with hand tremors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital ink input is used for handwriting or drawing, then user interaction capability is improved, but usability for users with hand tremors deteriorates due to unintended discontinuities and ineligible writing
Solution Approach 1:
The system detects discontinuities and irregularities in digital ink input caused by hand tremors and automatically corrects them by joining discontinuous strokes and smoothing irregularities. This converts the harmful effect of tremors into a correctable pattern, enabling users with hand tremors to use digital ink input effectively while maintaining input quality
Solution Approach 2:
The system introduces an intermediary correction mechanism that processes the raw digital ink input between the user's writing action and the final output. This intermediary layer detects tremor-related discontinuities and applies automatic corrections, serving as a mediator that protects the final output from the effects of hand tremors
2Adaptability or versatility
If automatic correction is applied to digital ink input, then accessibility for users with physical disabilities is improved, but system complexity increases due to tremor detection and correction mechanisms
Solution Approach 1:
The system performs self-service by automatically detecting discontinuities and irregularities in digital ink input and correcting them without requiring user intervention. The correction process is autonomously executed by the system, reducing the need for complex user interfaces or manual adjustment mechanisms while improving accessibility
Solution Approach 2:
The system changes parameters of the digital ink input by detecting discontinuities and irregularities and automatically adjusting them through correction algorithms. This parameter transformation approach enables the system to handle varied input qualities and adapt to different user needs without requiring complex structural changes
Data Source
AI summary
A method of and system for providing accessibility for digital ink is carried out by detecting digital ink input on a user interface (UI) screen, the digital ink input being received via a writing instrument used by a user within a given time period; capturing an image of the digital ink input; examining the image of the digital ink input to detect tremors in the user; assigning a level to the tremors based on discontinuities or irregularities in the digital ink input within the given time period; determining based on the level that the digital ink input requires correction; and applying a correction to the digital ink input to correct the digital ink input.