Gaze Point Detection Index for Visual Performance Feedback
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Solution Overview
Problem
Conventional technologies for evaluating visual performance do not provide feedback to subjects on their gaze point, limiting their ability to correct deviations and improve visual performance.
Innovation Solution
A display apparatus and method that includes a display unit, gaze point detection, region setting, determination, and display control units to detect and display an index at the gaze point if it meets specific conditions, allowing subjects to recognize and correct their gaze point in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gaze point detection and evaluation is implemented without feedback display, then visual performance evaluation capability is improved, but subject's ability to correct gaze deviations deteriorates
Solution Approach 1:
The patent implements a feedback mechanism by displaying an index at the detected gaze point position on the display unit. The display control unit monitors gaze point data and, when it meets predetermined index display conditions, displays the index at the corresponding gaze point position. This provides real-time visual feedback to the subject, enabling them to recognize and correct gaze deviations while maintaining accurate evaluation capability.
2Loss of information
If an index is displayed at the gaze point position, then subject's awareness of gaze position is improved, but system complexity increases
Solution Approach 1:
The system displays an index at the gaze point position to provide feedback to the subject about their current gaze location. This simple visual indicator reduces information loss by making gaze position awareness immediate and intuitive, while adding minimal complexity to the system architecture.
Solution Approach 2:
The index serves as an intermediary element between the gaze detection system and the subject. It translates the detected gaze point coordinates into a visible indicator on the display unit, bridging the gap between the technical detection mechanism and human perception without requiring complex processing or additional hardware.
3Speed
If gaze point data is continuously monitored and displayed, then real-time feedback capability is improved, but processing time and computational load increase
Solution Approach 1:
The system employs periodic sampling of gaze point data rather than continuous monitoring. The gaze point detection unit detects gaze points at predetermined time intervals, and the display control unit determines whether to display the index based on these periodic measurements. This approach provides real-time feedback capability while reducing computational load and processing time by operating at discrete time intervals.
Solution Approach 2:
The display control unit applies partial action by selectively displaying the index only when gaze point data meets predetermined index display conditions. Rather than continuously displaying or processing all gaze data, the system performs partial processing and display actions based on condition satisfaction, reducing overall processing requirements while maintaining effective real-time feedback.
Data Source
AI summary
A display apparatus includes a display unit that displays a predetermined target object to be gazed at by a subject, a gaze point detection unit that detects a position of a gaze point of the subject who observes the display unit, a region setting unit that sets a specific region corresponding to the predetermined target object, a determination unit that determines whether the gaze point is present in the specific region, an arithmetic unit that calculates gaze point data on the basis of a determination result of the determination unit, and a display control unit that displays an index at a position corresponding to the gaze point on the display unit if the gaze point data meets a predetermined index display condition.