Eye Tracking Calibration Through In-App Gaze Interaction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing head-mountable devices require lengthy and disruptive calibration procedures to adjust to changes in user position and orientation, leading to mis-calibration and reduced user experience.
Innovation Solution
A head-mountable device with an eye tracking assembly and controller that uses native applications for gaze direction calibration, adjusting display settings such as icon size, position, and light emission to calibrate gaze direction during normal use without interrupting the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional calibration procedures are used, then gaze direction calibration accuracy is improved, but user productivity and ease of operation deteriorate due to lengthy and disruptive procedures
Solution Approach 1:
The system performs calibration automatically during normal application usage without requiring user intervention. The eye tracking assembly continuously monitors gaze direction, and the controller automatically adjusts calibration parameters based on detected gaze patterns, allowing the system to self-calibrate while the user performs normal tasks.
Solution Approach 2:
Calibration occurs continuously in the background during normal application usage rather than requiring a separate dedicated calibration session. The system maintains calibration accuracy by continuously monitoring gaze direction and adjusting parameters in real-time, ensuring uninterrupted productivity.
2Measurement precision
If traditional calibration procedures are used, then gaze direction calibration accuracy is improved, but ease of operation worsens due to specialized and complex procedures
Solution Approach 1:
The calibration process requires no user action beyond normal application usage. The system automatically detects gaze direction, processes calibration data, and adjusts parameters without requiring the user to understand or participate in calibration procedures.
Solution Approach 2:
The calibration function is merged with normal application usage. The same display and eye tracking assembly used for regular operations are utilized for calibration, eliminating the need for separate calibration hardware or specialized procedures.
3Adaptability or versatility
If the head mountable device is used in various positions and orientations, then user comfort and adaptability are improved, but calibration accuracy deteriorates due to mis-calibration
Solution Approach 1:
The calibration parameters are made dynamic rather than static. The controller continuously adjusts calibration data based on detected head position and orientation changes, allowing the system to adapt to different usage scenarios while maintaining accurate gaze detection.
Solution Approach 2:
The system uses feedback from the eye tracking assembly and position sensors to continuously monitor and adjust calibration parameters. When head position or orientation changes are detected, the system receives feedback and automatically recalibrates to maintain accuracy across different positions.
4Adaptability or versatility
If display characteristics are altered during calibration, then calibration flexibility is improved, but device complexity increases
Solution Approach 1:
Multiple calibration functions are merged into a single integrated system. The controller simultaneously manages icon position, size, and light emission adjustments based on gaze detection, eliminating the need for separate calibration mechanisms for each parameter.
Solution Approach 2:
The eye tracking assembly and controller serve multiple functions: normal application operation, gaze direction detection, calibration execution, and display parameter adjustment. This multi-functionality reduces overall system complexity while maintaining calibration flexibility.
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
Enables quick, easy, and seamless gaze direction calibration within existing applications, reducing eye strain and maintaining accurate gaze detection without requiring separate calibration protocols.
Implementation Method 1
The eye tracking assembly can further include a light emitting diode configured to reflect light off of an eye of the user to the camera
Implementation Method 2
a light emitting diode configured to reflect light off of an eye of the user to the camera
Data Source
AI summary
A head-mountable display can include a display, an eye tracking assembly including a camera configured to detect a gaze direction of a user donning the display, and a controller electrically coupled to the display and the eye tracking assembly, the controller configured to execute a gaze direction calibration including detecting, via the camera, the gaze direction when the user looks at a visual icon representing a user-selectable software function, wherein the user-selectable software function includes a separate function independent of the gaze direction calibration.