虛擬實境（Virtual Reality, 縮寫VR）近年來一直很流行，主要有兩種較為廣泛使用的類型，第一種為需搭配電腦主機的VR稱為固定式頭戴顯示器，所需裝置不止電腦主機與頭戴顯示器，使用時雙手還需搭配感測器，也會受於場地的限制且攜帶不易；而第二種是用手機顯示VR的移動式頭戴顯示器 (mobile HMDs)，雖然體驗部分比較不生動，但方便性高於固定式頭戴顯示器許多，本研究項目就是以手機為主的mobile HMDs當研究項目。
由於該技術的普及，對於理解VR環境中的顏色外觀的需求日益增加。透過設計用於視覺評估VR空間的色外貌，我們能夠研究VR中的色外貌。本論文使用心理物理學的實驗方法來探討VR與現實環境之間的色外貌差異性，並且套用現有的色外貌模型CIECAM02將實驗結果與預測值進行比較。
實驗採用iPhone搭配mobile HMDs，運用3ds Max繪製VR空間，在VR空間裡有三個色塊，從左至右分別為參考白、測試色彩樣本、參考彩度，受測者由給定的參考白和參考彩度評估測試色彩樣本的明度 (Lightness)、彩度 (Colourfulness)及色相 (Hue quadrature)。
實驗結果顯示在VR空間中人眼色彩感知量與CIECAM02預測的色外貌三屬性結果有高度相關性，顯示CIECAM02對於VR空間中的色外貌有相當準確的預測性。然而，若手機螢幕亮度過高，CIECAM02 M會低估VR中彩度的觀測值，CIECAM02 J也會低估VR中明度的觀測值，而VR中色相則沒有因為手機螢幕亮度不同而有明顯的改變趨勢。

Virtual Reality (VR) has been prevalent in recent years. There are mainly two types of head-mounted displays being widely used. One is Stationary Head Mounted Displays, which needs computer, head-mounted display and hand sensor. Using this kind of equipment will be restrict by the space and become inconvenient to carry. Another one is Mobile Head Mounted Displays (mobile HMDs) that uses mobile phones to display VR. Although the experience is less vivid, it is more convenient than Stationary Head Mounted Displays. This study uses mobile HMDs as a research project.
Due to the popularity of such technic, the demand of colour appearance in VR is increasing gradually. Psychophysical methods were used in the experiments to investigate the colour appearance between VR and the real-world experimental. Then applied the existing colour appearance model CIECAM02 to compare both the perceived values and the predicted values.
The experiment used iPhone with mobile HMDs and the 3ds Max to created the VR space which performed with three color patches. From left to right were the reference white, the test color and the reference colourfulness. The observer was given the value of reference white and reference colourfulness assess to the lightness, colourfulness and hue quadrature of the test colours.
The results showed that the colour perception of observers was highly interrelated with virtual reality and the values predicted by CIECAM02, which proved that CIECAM02 is quite accurate in predicting the colour appearance in VR space. However, if the display luminance is too high, it will underestimate the perceived colourfulness and also the perceived lightness in VR. In addition, with different luminance of display, the perceived hue quadrature has no obvious change.

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