近幾年來，隨著電腦視覺技術以及運算能力的進步，發展出許多以手勢作為人機互動工具的研究成果。但是大部分的成果多只以少量簡單的示範內容展示其相關辨識技術，若要有效率地將手勢辨識的技術跟應用程式內容結合仍舊需要進一步的研究。
在本論文中，我們主要的目標是探究以雙手手勢作為輸入介面的技術及實用性。我們以手指頭上貼著Infrared-LED 做為追蹤的目標。除了提出3D手勢辨識的方法外，為了讓系統更具實用性，我們提出了一個以手勢為介面的系統架構(framework)，其特色有：1.可使用雙手以增加手勢之自然性及豐富性，2.容許多手勢連續串接以提升操作的方便性，3.提供模組化的動作架構以增加系統的可延伸性。同時為了展示本架構之實用性，我們在3D沈浸式環境中實作一個以自然直覺手勢作為人機介面的多媒體瀏覽系統。

Recent years, many research results of the Gesture Interface System have been developed with the progressing of the computer vision technique and the computer computing ability. However, most of the research results only use few and simple examples to demonstrate the related recognition technique. If we want to combine the technique of gesture recognition and the content of the application program efficiently, it is still needed to be further studied.
In this paper, our main goal is to research the practicability and the technique of the bimanual gesture interface. We use the infrared-LED attached to the fingers as the tracking targets. Besides presenting the 3D recognition method, we also present a gesture interface system framework to increase the practicability for the system. Our framework has the following characteristics: 1. Our system allow user to use both hands in order to improve the nature and the variety of gestures. 2. Our system allow user using continuous gestures to increase the convenience of control. 3. We support the module of gestures in order to improve the extensibility of the system. Simultaneously, we implemented a multimedia application system for gesture interface to demonstrate the practicability of the framework in 3D immersive environment.

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