本論文提出一個以攝影機與投影機組合的行動裝置，作為未來配合銀髮族使用之擴張實境應用平台，提供各種應用之顯示及處理功能。整個裝置由微型投影機、攝影機及電腦所構成，並以攜帶方式置於胸前，可將所需之顯示畫面直接投射於實際的環境物體表面上，因此允許使用者於任意時間、地點使用。在設計上，首先將整體幾何模型做完整及精確的分析，以搭配不同的應用需求，調整出最適宜的機構設定。為了方便銀髮族之使用，投影機之開關設計成以手勢操作，應用監督式貝式學習法找出最佳之手掌分割演算法。系統也將投影機視為一個照明設備，自動分析環境光照狀況，及依需要開啟投影機，避免讓使用者於陰暗場所行動。整個行動裝置以重量輕、機構簡單、容易使用為設計原則，讓銀髮族不會覺得需要實際操作電腦。

In this paper, the mobile device is proposed as an AR application platform provided display and vision functions for the elder to use. The device putted in front of the chest consists of a micro projector, a camera, and a computer. It can project the information onto the real surface so that the user is admitted to use it in anytime and
anywhere. First, according on the complete analysis of the whole geometric model, we can obtain the best device setting for different application requirements. The projector’s switch is designed to turn on it only by the palm that is convenient to the elder. The device captures the palm image from the camera, and method for segmenting the palm region in the image is based on the supervised Bayesian learning method. The device is also developed as a lighting tool using the projector that automatic opens based on the environment lighting to avoid the elder entered the dark region. The implementation of the AR application platforms is demanded with the features in light, simple structure, and easy use for the elder who don’t need to control a real computer.