針對CAD概念塑模行為提供的手勢空間輸入介面

Abstract

這篇文章描述一個針對建築設計概念設計需求發展的手勢空間輸入介面，以解決傳統CAD人機介面2D輸入裝置控制3D環境的限制，造成指令繁雜和操作困難的問題。該介面提出一個新的架構，整合了設計者操作CAD時視覺思考與塑模行為並行的設計行為，並將傳統由滑鼠與鍵盤組成的人機介面取而代之以簡單的手勢控制。並且提供一套空間定位的座標系統讓設計者不需透過轉換座標軸指令的步驟達成CAD環境中的空間操作。

本研究探討CAD媒材如何提供更直覺地互動控制以符合設計者的需求。在實作上，利用LED手套搭配兩支CCD攝影機的擷取以感測手勢在空間中的座標位置。以及利用電路設計整合滑鼠和鍵盤在另一隻手套上，將3D環境中旋轉、縮放和平移的調整視角行為改裝以手勢控制。

This article presents a gestural spatial interface required by the development of conceptual modeling for Architecture Designer. This user interface provides a new structure for solving the problems of difficult interface operations and complicated commands due to the application of CAD 2D input device for controlling 3D environment. The interface integrates the design thinking actions of “seeing – moving – seeing” while designers are operating CAD (Schön & Wiggins, 1992). Simple gestures are used to control the operations instead. The interface also provides a spatial positioning method which helps designers to eliminate the commands of converting a coordinate axis.

The study aims to discuss the provision of more intuitively interactive control through CAD so as to fulfil the needs of designers. In the implementation, one of the gloves equipped with two CCD cameras for image capturing is used to sense the motions of hands and positions in 3D. In addition, circuit design integrates with mouse, keyboard and another glove is applied to convert the motions of hands including zoom in / zoom out, movement and rotating to adjust the viewpoint of 3D screen in Maya environment.