Dynamic Eye Tracking Light Source Control for Line-of-Sight Accuracy
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Solution Overview
Problem
The accuracy of line-of-sight estimation is compromised when the blinking pattern of a light source irradiating the eyeball cannot be dynamically adjusted based on imaging results.
Innovation Solution
An information processing apparatus and method that includes a light source control unit to dynamically control the blinking pattern of multiple light sources irradiating an eye, using image acquisition and processing to adjust the pattern based on captured images, including bright spots and pupil positions, to enhance the accuracy of line-of-sight estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the blinking pattern of the light source is fixed and not dynamically adjusted, then the system structure is simple, but the accuracy of line-of-sight estimation decreases
Solution Approach 1:
The patent applies dynamics by making the blinking pattern of the light source adjustable and adaptable based on imaging results. The control unit dynamically modifies the blinking pattern (timing, duration, intensity) according to the captured eye images, transforming a static system into a dynamic one that responds to real-time conditions, thereby improving line-of-sight estimation accuracy without requiring complex hardware modifications
Solution Approach 2:
The patent implements feedback by using the captured eye images (including bright spot positions) to inform and adjust the subsequent blinking pattern of the light source. The control unit analyzes the imaging results and uses this feedback to optimize the lighting strategy, creating a closed-loop system that continuously improves measurement precision based on actual performance
2Measurement precision
If the blinking pattern is dynamically adjusted based on imaging results, then the accuracy of line-of-sight estimation improves, but the processing time and computational load increase
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple blinking patterns that can be selected based on imaging conditions. Rather than performing complex real-time optimization, the system prepares various blinking strategies in advance and chooses the most appropriate one based on the current eye image characteristics, reducing computational time while maintaining accuracy improvements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for improved accuracy in line-of-sight estimation by dynamically adjusting the light source blinking pattern, facilitating better association between light sources and bright spots, thereby enhancing the precision of the estimation process.
Implementation Method 1
a light source control unit configured to control each of a plurality of light sources that irradiate an eye with light
Implementation Method 2
an image acquisition unit configured to acquire a captured image of the eye including a bright spot that is a reflection point of the light
Data Source
AI summary
There is provided an information processing apparatus to make it possible to dynamically change the blinking pattern of the light source according to the imaging result, the information processing apparatus including: a light source control unit configured to control each of light sources constituting a plurality of light sources that irradiate an eye with light; and an image acquisition unit configured to acquire a captured image of the eye including a bright spot that is a reflection point of the light. The light source control unit controls blinking of each of the light sources on a basis of the captured image of the eye.