presentation 陳述，表達 multisensory adj. 多感官的
perspective 透視圖，觀點 illusion n. 幻想
image 影像，圖像 inherently 天性地，固有地
six-surface Cube 六面體 real-time 實時的
stereo 立體的，立體感覺的 resolution n.. 分辨率
mount v. 裝配，安裝 release v. 釋放，放棄
depth cue 深度暗示 projected adj. 投影的
visual adj. 視覺的 simulation n. 模擬
Abbreviations:
VR (Virtual Reality) 虛擬現實 BOOM(Binocular Omni-Orientation Monitor) 雙目全方位監視器
HMD (head-mounted display) 頭盔顯示器
One definition of virtual reality is a wide-field presentation of computer-generated, multisensory information that tracks a user in real time. This definition is used at the Electronic Visualization Laboratory in Chicago (EVL[1]). In other words, virtual reality[2] means that the user is surrounded by a computer-generated image that changes depending on the movements—i.e.shifts in perspective—of the user.
虛擬現實的定義之一：虛擬現實是對由計算機生成的、能夠實時追蹤用戶的多感官信息的一種籠統表述。芝加哥電子可視化實驗室(EVL)采用的就是這種定義。換句話說，虛擬現實意味著用戶被計算機生成的圖景所包圍，這些圖景要依據用戶的運動(如視角的轉換)而產生變化。
The first attempt at virtual reality used head-mounted displays (HMDs). In HMDs, projectors feed real-time images to small screens attached inside a kind of helmet that the user wears. In the beginning, HMDs often showed mono pictures, and the user’s head movements were tracked. In modern HMDs, stereo pictures are standard, since the technique has become cheaper. Typically, HMDs either have poor resolution or are too heavy. Because only one person at a time can use an HMD, discussion of images is much more difficult.
虛擬現實首次嘗試使用了頭盔式顯示器(HMD)。在HMD中，投影機把實時圖景投影到附著于用戶所帶頭盔內的小屏幕上。最初，HMD顯示平面圖片，追蹤用戶的頭部運動。但在現代HMD中，由于這項技術變得更加便宜，立體圖片則成為了標準。通常說來，HMD或者分辨率過低或者過于笨重。由于一個HMD一次只能由一個人使用，因此對圖景的討論就更加困難。
To increase image quality, Fakespace[4] invented the BOOM (Binocular Omni-Orientation Monitor).Very small monitors are mounted on a mechanical arm, and users look into the monitors like they would look into a pair of binoculars. Tracking occurs when the user moves the arm, which changes the perspective. When a user releases the BOOM, another person can look at the same thing from the same perspective, which is an advantage over HMDs. Since real monitors are used, the resolution is good.
為了提高圖景的質量，Fakespace發明了BOOM(雙目全方位監視器)。機械臂上固定著非常小的監視器，就象使用雙目望遠鏡一樣，用戶使用監視器觀察。用戶移動機械臂時改變了視角，因此實現了追蹤。當一個用戶不用這個BOOM后，另一個用戶可以從相同的視角觀察到相同的事物，這一點BOOM要優于HMD。因為使用了真正的監視器，所以分辨率很好。
The concept of a room with graphics projected from behind the walls was invented at EVL in 1992. The images on the walls are usually in stereo to give a depth cue. The main advantage over ordinary graphics systems is that the users are surrounded by the projected images, which means that the images are the users’main field of vision. This is usually called a “CAVE”,CAVE Automatic Virtual Environment. The first CAVE(as well as the concept) was created by the faculty, staff, and students at EVL.
具有墻后投影生成圖像的房間的概念是1992年在EVL發明的。墻上的圖景通常是立體的以便能表現出深度。與普通的圖形系統相比，它的主要優勢在于用戶被投影圖像所包圍，這意味著這些圖景是用戶的主要視野。它通常被稱為CAVE，即洞穴式自動虛擬環境。第一臺CAVE(與其概念)是由EVL的全體教職員和同學共同創造的
文章來源于領測軟件測試網 http://www.kjueaiud.com/