VR Avatar Dialog Testing for Objective Biometric Assessment
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Solution Overview
Problem
Existing dialog-based testing methods are subjective and uncontrolled, relying on qualitative evaluations of body language and being influenced by human variability and environmental factors, which can impact test results.
Innovation Solution
A 3D virtual reality system with a programmed avatar engages test subjects in a controlled, immersive environment, using gaze trackers and head motion sensors to provide objective and quantitative assessments, eliminating human subjectivity and environmental variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If direct person-to-subject dialog is used for testing, then the testing process is flexible and adaptable, but the evaluation becomes subjective and influenced by human variability
Solution Approach 1:
The patent creates a virtual copy of a human tester in the form of an avatar that can be replicated and distributed across multiple testing sessions. This virtual avatar copy maintains the interpersonal interaction qualities of human testing while eliminating human variability, as the same avatar can be used consistently across different subjects and time periods.
Solution Approach 2:
The virtual avatar serves as an intermediary between the testing system and the subject. It mediates the interaction by presenting questions and observing responses in a standardized manner, while the actual analysis is performed by objective algorithms that process gaze tracking data, eliminating the need for direct human evaluation.
2Ease of operation
If human testers conduct dialog-based testing, then subjective assessment of body language is possible, but environmental factors and human variability impact test results
Solution Approach 1:
The patent replaces the human mechanical system of observation and interpretation with an automated optical system. Gaze tracking technology objectively measures eye movements and facial orientation, substituting human subjective assessment with precise computational measurement of the same behavioral cues.
Solution Approach 2:
The system enables self-service testing where the virtual avatar autonomously conducts the entire testing process without human intervention. The avatar presents questions, tracks responses including nonverbal cues through gaze monitoring, and generates results automatically, making the process reliable and reproducible.
3Measurement precision
If virtual reality system with gaze tracking is used, then objective and quantitative assessment is achieved, but device complexity increases
Solution Approach 1:
The patent leverages the existing multi-functionality of VR headsets, which already incorporate displays, sensors, and processing capabilities for various applications. By utilizing these existing components for gaze tracking and testing, the system achieves objective measurement without requiring entirely new specialized hardware.
Solution Approach 2:
The patent combines multiple functions into the virtual avatar platform: it serves as both the test administrator (presenting questions) and the observation instrument (tracking gaze and facial movements). This merging reduces overall system complexity by consolidating functions that would otherwise require separate components.
Data Source
AI summary
Dialog based testing is performed in conjunction with a three-dimensional (3D) virtual reality (VR) system including at least one loudspeaker, a microphone, and a 3D VR headset having a display for displaying 3D VR video and a gaze tracker integrated with the headset. The dialog based testing includes: rendering a 3D avatar via the display of the 3D VR headset; engaging in a dialog including causing the rendered 3D avatar to make utterances in accordance with the branching dialog script and receiving responses to the utterances from a test subject wearing the 3D VR headset including at least verbal responses received via the microphone and gaze activity recorded by the gaze tracker and traversing the branching dialog script including selecting branches of the branching dialog script based at least on the verbal responses received via the microphone; and grading the test subject based on the responses.