使用者與數位產品間皆須透過一個媒介來溝通，此媒介便是人機介面（human computer interface），做為溝通橋樑的人機介面得有效率地整合數位產品的資訊，並用最佳且最有效率的呈現方式傳達給使用者。在以2D形式所呈現之3D的虛擬場景中，人們難以判斷物體間的相對關係，包括物體間距離遠近與物體大小形狀上的差別，所以容易產生迷失感覺。尤其當畫面以第一人稱視角進行時，使用者喪失方向感的情形越嚴重，因此系統透過介面傳達給使用者的資訊變得相當重要。本研究針對動態3D環境中，螢幕所配置之資訊介面與使用者間的認知過程做深入地探討，實作出以全3D建模架設的整個虛擬場景，並使用第一人稱的視角來進行汽車駕駛情境的模擬，從使用者對螢幕所顯示資訊的注意力與視覺搜尋歷程，進一步探討螢幕介面資訊的配置對使用者反應績效之影響。
具體結論歸納如下：在本研究中，將螢幕介面資訊以劃分九宮格的方式分成左上、中上、右上、左中、置中、右中、左下、中下和右下位置，而第一階段的實驗結果顯示，受測者的駕駛經驗對完成任務的秒數有顯著的影響，當螢幕資訊位於左中和中下位置時，受測者的反應績效較好，螢幕資訊位於左下位置時，受測者的反應績效最差。第二階段的實驗結果表示耗費更多的注意力不一定帶來更好的反應績效，主要是因為當螢幕資訊呈現於視覺中心點越遠的位置時，受測者必須耗費更多的注意力去搜索，在距離視覺中心點越近的位置是受測者覺得越方便觀看的位置，唯一的特例是當螢幕地圖在置中位置時，因為直接佔住主要視線的範圍，使受測者觀察路況環境的能力大打折扣，轉而更依賴螢幕地圖所給予的指示來行進，以至視覺搜尋的範圍大多侷限於螢幕地圖顯示的範圍。

Users and digital products must communicate through a medium, and this is referred to as the Human Computer Interface (HCI). As the intermediary link, the HCI must be able to effectively integrate the information coming from the digital product then present it to the user in the most effective and optimal manner. In a virtual 3D environment presented in 2D, it is difficult for people to judge the relative position of objects to each other, including the distance between them or their difference in actual size. This can easily lead to disorientation. This problem of disorientation becomes particularly acute when the screen is presented in a first person view. In such a situation, the data conveyed to the user through the HCI becomes particularly important. In this study, an in-depth examination of the display data interface versus the user’s perception within a dynamic 3D environment was carried out. A fully 3D model was used to create a complete virtual environment in which a car driving simulation was operated using a first person view. The layout of the data interface on the monitor could then be evaluated based on the user’s attention and visual search pattern for the data displayed on the screen.
The conclusions can be summarized as follows: In this study, the display interface data was allocated to a part of the display which was divided into 9 squares arranged in a 3x3 format, these being upper left, upper center, upper right, center left, center, center right, lower left, lower center and lower right. In phase one of the experiment, results indicated that the test subject’s driving experience had a significant effect on how quickly they accomplished the test objective. When the display data was located in the center left and lower center squares, the subject’s reaction times were better. When the display data was located in the lower left squares, the subject’s reaction times were the worst. In the second phase of the experiment results showed that extra attention did not necessarily mean improved reaction times. This was mainly due to the fact that the further the presented data was away from the visual center point the more time the test subject had to spend looking for that data. This meant that the closer to the visual center the data was the easier it was to read. The sole exception here was when the map display was placed in the middle. Since it dominated the main visual area, it seriously affected the test subject’s ability to observe the road conditions and made them more reliant on the cues given by the map display. This meant that the range of their visual search was limited to the map display itself.

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