Gaze-Based Text Input Using Eye Tracking and Decoding
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Solution Overview
Problem
Existing gaze-based text input methods are slow and inaccurate, and speech recognition software may not be convenient or reliable for users without hand control or speech disorders.
Innovation Solution
A system and method for entering text into a computing device using gaze input, which includes an eye tracking device to monitor and process gaze data, a decoding module to hypothesize text based on gaze patterns, and error correction interfaces to improve accuracy, allowing users to input text without physical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If speech recognition software is used for text input, then text input can be provided without physical contact, but it may be too slow, require extensive training, or not be available to users with speech disorders
Solution Approach 1:
The patent replaces speech recognition (acoustic field) with gaze-based input (optical field). The eye tracking device detects gaze location through optical means, and the system translates gaze patterns into text input without requiring speech processing. This substitution eliminates the limitations of speech recognition while maintaining contactless operation.
2Ease of operation
If basic gaze-based text input methods are used, then physical contact is not required, but the input speed and accuracy suffer
Solution Approach 1:
The system implements feedback through error correction interfaces that present multiple likely terms based on detected gaze patterns. The user can review and correct the interpreted text, and the system learns from corrections to improve future accuracy. This feedback loop significantly enhances text input precision while maintaining contactless operation.
Solution Approach 2:
The system performs preliminary processing by analyzing gaze patterns and generating multiple likely term hypotheses before final text confirmation. This preliminary action allows the system to prepare accurate text suggestions in advance, improving both speed and accuracy of the final text input.
3Ease of operation
If basic gaze-based text input methods are used, then physical contact is not required, but the input process becomes slow
Solution Approach 1:
The system performs preliminary analysis of gaze patterns and generates multiple likely term hypotheses before final confirmation is needed. By preparing multiple probable text interpretations in advance based on the gaze sequence, the system reduces the time required for text input validation and correction, thereby reducing overall text input time.
Solution Approach 2:
The error correction interface provides immediate feedback with multiple likely terms, allowing users to quickly confirm or correct text without lengthy processing delays. This feedback mechanism accelerates the text input process by presenting ready-made corrections rather than requiring complete re-analysis.
Data Source
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AI summary
According to the invention, a method for entering text into a computing device using gaze input from a user is disclosed. The method may include causing a display device to display a visual representation of a plurality of letters. The method may also include receiving gaze information identifying a movement of the user's gaze on the visual representation. The method may further include recording an observation sequence of one or more observation events that occur during the movement of the user's gaze on the visual representation. The method may additionally include providing the observation sequence to a decoder module. The decoder module may determine at least one word from the observation sequence representing an estimate of an intended text of the user.