額頭上貼上 Augmented Reality 的pattern貼紙 配合webcam即可當3d user input device.

轉頭 前後左右移動頭部 都可以直接 偵測到

two webcams + two monitors + ARToolKit = 3D 立體 虛擬物

補充for

http://ideaprojects.blogspot.com/2006_09_01_archive.html#115959642111058127

冰箱其中一格(或N格)可以結合冰箱與微波爐功能

可在前幾天先放進格子裡繼續保持冷凍狀態

並設定時間 時間到 此格即會自動加溫

scan image stream rapidly from webcam and query for image fingerprint from server

ex: in museum, recognize 名畫 自動介紹

ex: on the street, recognize logo 自動介紹公司

probably for patent only. might also have too many patent on this.