本研究利用民眾生活中經常使用的Google地圖做為測試環境，透過眼動儀測量受測者的眼動情形，比較使用平面螢幕和頭戴式顯示器(Oculus DK2)測驗時的效率與眼動情形差異，並以熱圖(Heat Map)方式呈現。平面螢幕只能顯示部份街景全景圖；使用眼動儀可以記錄眼睛注視位置的螢幕座標，但無法得知實際看街景的位置。因此本研究提出一個轉換的方法，將兩種顯示器下，測得的資料轉換成一致單位，使平面螢幕的記錄資料在轉換後，也可以知道實際看街景的位置，並且與配戴頭戴式顯示器的眼動情形一樣可視覺化。經由實驗後發現，在使用頭戴式顯示器下進行Google地圖測驗時的凝視時間增加75.8%、掃視時間減少37.0%、觀看地圖時間減少17.3%，此三項指標皆優於使用平面螢幕。

In this thesis, we adopted Google Maps as our platform to study the differences in eye movements as well as the performance of test subjects when asked to perform several tasks using a traditional flat screen monitor and using a widely-known head-mounted virtual reality display Oculus DK2. There are several reasons why comparing the performance between these two user interfaces is a difficult task. First, the street views that Google Map provides are panorama images attached to a spherical 3D model, and only a part of it is showed on a flat screen monitor. Therefore, simply recording the coordinates measured by eye tracking devices will not help us understand where the users are really looking at. Second, when wearing a head-mounted VR display such as Oculus DK2, there is no way to track eye movements as the eyes are blocked by the display itself. In order to overcome these difficulties, we developed a method to transform the data collected from these two user interfaces into one common format. Experiment results show significant differences between the two user interfaces. Our test subjects show 75.8% increment in fixation time, 37.0% decrement in saccade time and 17.3% decrement in time spent on checking maps while wearing Oculus DK2 which is better than using a traditional flat screen monitor.

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