Sight Line Position Processing Apparatus with Dynamic Reliability Adjustment
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Solution Overview
Problem
Existing image capturing apparatuses with electronic viewfinders face accuracy issues in sight line detection due to uniform averaging of sight line positions, leading to delays and reduced accuracy.
Innovation Solution
A sight line position processing apparatus that repeatedly detects the user's sight line position, determines its reliability, and generates a statistical sight line position by adjusting the number of positions used for calculation based on reliability, with more positions used when farther from the center to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a predetermined number of sight line positions are uniformly added and processed to calculate average sight line position, then oscillations in sight line position are suppressed, but the calculated average sight line position has uniform delay with respect to actual sight line position, reducing detection accuracy
Solution Approach 1:
The patent applies dynamics by making the number of sight line positions to be averaged variable rather than fixed. The generation unit dynamically adjusts the number of positions based on the distance from the center of the display, allowing the system to adapt to different viewing conditions and eliminate uniform delay while maintaining stability.
Solution Approach 2:
The patent applies local quality by treating different regions of the display differently. Sight line positions at greater distances from the center are weighted more heavily (using more sampled positions) than positions near the center, acknowledging that different regions have different characteristics and requiring different processing approaches.
2Measurement precision
If more sight line positions are used to calculate statistical value, then accuracy of sight line detection is improved, but processing time and computational complexity increase
Solution Approach 1:
The patent applies local quality by using different numbers of sight line positions based on their distance from the center. Positions farther from the center use more sampled positions for higher accuracy, while positions near the center use fewer positions to reduce processing time, optimizing the balance between accuracy and computational cost.
Data Source
AI summary
There is provided a sight line position processing apparatus. A detection unit repeatedly detects a sight line position of a user. A first determination unit determines a reliability of the sight line position detected by the detection unit. A generation unit generates a statistical sight line position by calculating a statistical value for a plurality of sight line positions detected by the detection unit. The generation unit controls a number of sight line positions used to calculate one statistical value on the basis of the reliability.