使用頭戴顯示器作為介面顯示器舒適度評估

Comfort assessment of using a head-mounted display as an interface monitor

秦浩詞(Hao-Tzu Chin)

指導教授 ： 蔡正倫

中原大學/工學院/生物醫學工程研究所/碩士(2018年)

https://doi.org/10.6840/cycu201800600

摘要

虛擬實境使用者經常反應在使用後會有不舒適或眼睛疲勞的症狀產生，這主要可能是壓抑眼睛近連動反射動作的視覺輻輳調節衝突所引起的不良反應。此研究利用觀看混合實境中的平面影像來消除視覺反射中的調視作用，以確認視覺輻輳調節衝突是否為造成暈眩的主要原因。透過評估受測者的主觀不舒適度與量測心率變異度、血壓變化以及眼睛屈光度等來比較使用者在觀看平面與立體變動影像前後的生理反應變化。實驗結果顯示在不舒適度評估方面兩者之間沒有顯著性差異，但是觀看立體影像後HRV中的LF以及LF/HF比起觀看前有上升的傾向而HF則呈現下降的傾向，顯示其對生理確實有所影響，而使用頭戴顯示器觀看平面影像則比較不會產生不適感。

關鍵字

虛擬實境 ； 眼睛近連動反射 ； 視覺輻輳調節衝突

並列摘要

Many people complain of sickness or eye strain after using virtual reality display. This is possibly caused by the vergence-accommodation conflict that inhibits the near synkinetic reflection of eyes. A planar image in a mixed reality was used to eliminate the effects of near synkinetic reflections to confirm whether vergence-accommodation conflict is really the main cause of dizziness. The change in physiological response after viewing the plane and the stereoscopic motion pictures were analyzed to evaluate the discomfort. These include discomfort questionnaire and measurement of heart rate variability, blood pressure changes, and eye diopter. The results show that there is no significant report in dizziness after viewing different scene in mixed reality. The higher LF and LF/HF in HRV after viewing the stereoscopic motion picture shows increasing activity of parasympathetic nervous system. Whereas there were no obvious change in the activity after viewing the planar motion picture. According to the results, viewing the image in head-mounted display without having to inhibit the accommodation can reduce the discomfort caused by vergence-accommodation conflict.

並列關鍵字

virtual reality ； near synkinetic reflex ； vergence-accommodation conflict

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