Video-Based Sickness Assessment With Simulated Vehicle Obstructions
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Solution Overview
Problem
Conventional sickness assessment methods require the use of an actual vehicle, limiting the flexibility and scope of assessments.
Innovation Solution
A sickness assessment system and method that uses video data to induce a visually induced self-motion sensation, superimposes obstruction patterns on the video to simulate vehicle obstructions, and assesses sickness based on physiological parameters and subjective feedback without requiring an actual vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sickness assessment methods using actual vehicles are employed, then assessment reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a virtual copy of the vehicle environment using video data that simulates the visual field from within a vehicle. This virtual video environment replicates the motion and visual characteristics of actual vehicle travel, allowing sickness assessment to be performed on subjects viewing the video rather than traveling in an actual vehicle. The obstruction patterns are also copied from real vehicle features (windows, pillars, seats) to create a realistic virtual assessment environment.
2Measurement precision
If actual vehicles are used for sickness assessment, then measurement precision is improved, but adaptability decreases
Solution Approach 1:
The patent implements a dynamic system where video data can be selected and modified to represent different vehicle types, travel conditions, and obstruction patterns. The system can adapt to assess various scenarios (different vehicles, routes, weather conditions) by changing the video content and obstruction patterns without requiring physical vehicles. This dynamic configuration capability provides both precision through controlled conditions and adaptability through easy reconfiguration.
3Ease of operation
If video-based assessment without actual vehicles is used, then ease of operation and flexibility are improved, but measurement precision may deteriorate
Solution Approach 1:
The patent applies obstruction patterns at specific locations within the video to replicate the local visual characteristics of actual vehicle environments. By strategically placing obstructions (windows, pillars, seats) at appropriate positions in the video field and adjusting their transparency and visual properties, the system creates locally accurate representations of real vehicle viewing conditions. This localized precision maintains measurement accuracy while using the convenient video-based approach.
Data Source
AI summary
A sickness assessment system includes a video storage unit configured to store video data that causes a visually induced self-motion sensation in a subject, a pattern storage unit configured to store an obstruction pattern that obstructs a partial area of a video based on the video data, a display control unit configured to display, on a display unit, an assessment video in which the obstruction pattern stored in the pattern storage unit is superimposed on the video based on the video data stored in the video storage unit, and an assessment processing unit configured to assess sickness of the subject on the basis of output information output from the subject who has viewed the displayed assessment video.