Wearable Eye-Tracking Light Control for Iris Recognition
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Solution Overview
Problem
Existing wearable devices struggle with efficient eye tracking and iris recognition in augmented reality applications, particularly in augmented reality glasses, due to challenges in controlling light radiation effectively for accurate gaze tracking and recognition.
Innovation Solution
A wearable device equipped with a camera and multiple light sources that emit light towards the user's eye, allowing for eye tracking and iris recognition by controlling the emission of light from specific light sources while deactivating others, utilizing a non-transitory computer readable storage medium to execute instructions for these processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light sources are used for eye tracking and iris recognition, then the accuracy of gaze tracking and recognition is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent divides the light source system into multiple independent light sources (e.g., first light source and second light source) that can be controlled separately. This segmentation allows the system to select specific light sources for different functions (eye tracking vs. iris recognition), improving measurement precision while managing device complexity through modular control.
Solution Approach 2:
The patent implements dynamic control of light sources by switching between different light sources based on the required function. The control unit dynamically selects which light sources to activate for eye tracking versus iris recognition, optimizing the balance between accuracy and system complexity in real-time operation.
2Measurement precision
If all light sources are activated simultaneously for comprehensive eye tracking, then the coverage and accuracy are improved, but the energy consumption increases
Solution Approach 1:
The patent applies partial action by activating only the necessary light sources for each specific function rather than all light sources simultaneously. For eye tracking, only specific light sources are activated, and for iris recognition, different light sources are used. This reduces energy consumption while maintaining sufficient accuracy for each function.
Solution Approach 2:
The system uses periodic switching between different light sources for different functions. The control unit periodically selects which light sources to activate based on the current operation mode, allowing the system to optimize energy consumption by not maintaining all light sources in a continuous active state.
3Adaptability or versatility
If light sources are controlled independently for different functions, then the functionality and adaptability are improved, but the control system complexity increases
Solution Approach 1:
The patent implements multi-functionality by designing a control unit that can manage multiple light sources for different purposes (eye tracking and iris recognition). The same control infrastructure handles both functions by selectively activating appropriate light sources, thereby achieving adaptability without proportionally increasing overall system complexity.
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
Enhances the accuracy and efficiency of eye tracking and iris recognition, providing improved user experience in augmented reality environments by optimizing light radiation control.
Implementation Method 1
a plurality of light sources configured to emit light toward an eye of a user wearing the wearable device
Data Source
AI summary
A wearable device is provided. The wearable device includes a plurality of light sources configured to emit light toward an eye of a user wearing the wearable device. The wearable device includes a camera configured to capture images of at least a part of the eye of the user wearing the wearable device. The wearable device includes at least one processor comprising processing circuitry. The wearable device includes memory, comprising one or more storage mediums, storing instructions. The wearable device performs eye tracking based on the images captured by the camera while the plurality of the light sources are controlled to emit light toward the eye of the user. The wearable device performs iris recognition based on at least one image captured by the camera while a portion of the plurality of the light sources is controlled to emit light toward the eye of the user and a remaining portion of the plurality of the light sources is deactivated.