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I'm wearing a camera, just a simple web cam, a portable, battery-powered projection system with a little mirror.
我佩戴著一個相機，就是一個簡單的網絡攝像頭，一個便攜的用電池供電的投影儀和一個小鏡子。
These components communicate to my cell phone in my pocket which acts as the communication and computation device.
這些組件跟我口袋中的手機進行通訊，手機作為一個通訊和計算的設備。
And in the video here we see my student Pranav Mistry, who's really the genius who's been implementing and designing this whole system.
畫面中是我的天才學生Pranav Mistry，他設計并制造了這整套系統。
And we see how this system lets him walk up to any surface and start using his hands to interact with the information that is projected in front of him.
我們可以看到，當他靠近任何表面時，信息就會被投影到表面上，他就用雙手來進行操作。
The system tracks the four significant fingers.
系統會跟蹤四個主要的手指。
In this case, he's wearing simple marker caps that you may recognize.
在這里，你可以看到他戴著用于標示的指套。
But if you want a more stylish version, you could also paint your nails in different colors.
如果你想要更美觀，可以把你的指甲染成不同的顏色。
And the camera basically tracks these four fingers and recognizes any gestures that he's making so he can just go to,
攝像頭會跟蹤這四個手指，識別他的任何手勢，
for example, a map of Long Beach, zoom in and out, etc.
例如，他可以打開Long Beach的地圖，進行放大或者縮小等等操作。
The system also recognizes iconic gestures such as the "take a picture" gesture, and then takes a picture of whatever is in front of you.
這個系統也能識別“象征性手勢”，比如，當你做出這個“拍照手勢”，系統就會拍照，把你面前的東西拍下來。
And when he then walks back to the Media Lab, he can just go up to any wall and project all the pictures that he's taken,
當他回到Media Lab實驗室之后，他可以走近任何一面墻，投影出他拍的所有照片，
sort through them and organize them, and re-size them, etc., again using all natural gestures.
用各種自然手勢，進行整理、歸類、改變大小等各種操作。所有操作都用手勢來完成。
