手機當投影機，研究隊發展虛擬投影技術

chinovince

一個三人的研究團發展了「虛擬投影（Virtual Projection）」的技巧，並認為這是智能手機未來一項重要的功能。他們以 iPhone 作為試驗品，製作了一個虛擬投影的 app，並放了一段示範片上 youtube。虛擬投影的條件是要有一部 screen 作投影的「幕」，其基本原理是利用 iPhone 的背面鏡頭不斷向 screen 拍照，然後計算出 iPhone 和屏幕之間的距離，iPhone 上的影像，文字可以即時輸出去大屏幕，也可以進行放大、縮小、多重影像投影、定格等功能。


相反，此技術亦可用來進行「反投射」，就是 iPhone 不斷攝取屏幕的資訊並儲存在手機內。這項技術的確是簡單易明有有潛能，想像一下他日拿一部手機，把想分享的影像一指向螢幕就可以一齊開心 share，真係幾爽。筆者更想到這技術可以發展成一種輸入方法，即由手機不段向螢幕輸入影像資訊，甚至可以發展成遊戲。一個簡單的概念，果真可以讓人有無窮幻想。

Virtual Projection: Exploring Optical Projection as a Metaphor for Multi-Device Interaction

Virtual Projection is a joint research project of the University of Munich (LMU), the University of Calgary and Columbia University by Dominikus Baur, Sebastian Boring, and Steven Feiner. It will be presented at the CHI 2012 conference held in May in Austin, TX, USA.

Virtual Projection leverages the idea of bringing optical projection to digital surfaces, thus making it just as easy to temporarily transfer information from a phone to a larger display. As virtual projections are only simulated, we can overcome some of the restrictions of their real-world inspiration: (1) We can freely adjust distortion and transformation depending on the application's needs. (2) We can fix virtual projections to the display and create multiple ones at the same time.

More information: http://do.minik.us/virtual-projection