在本論文中，我們提出了一套結合了多媒體和虛擬實境技術的籃球戰術訓練系統，藉以提高戰術學習的有效性和球員在戰術訓練上的經驗。我們開發了一套在平板電腦上運行的電子戰術板應用程式來進行錄製、檢索以及選擇進攻的戰術，然後將所選戰術的球員移動軌跡與球的傳導資訊轉換至3D系統中，以虛擬實境的方式呈現出戰術訓練的環境，提供給使用者做體驗與練習戰術。在虛擬實境中，使用者可以透過以第一人稱或第三人稱視角來觀看戰術，同時會根據使用者的頭部轉向資訊，提供正確的頭部轉向提示與路徑提示，並可以自動生成防守者以提高戰術訓練的擬真度。我們也設計了一套實驗流程來驗證我們提出的系統，不僅讓使用者覺得像在真正的球場上進行戰術訓練，且能有效提升學習新戰術的效率。

In this paper, we present a basketball tactic training system based on multimedia and virtual reality (VR) technologies to improve the effectiveness and experience of tactic learning. A tablet-based digital tactic board (2D BTB) is developed to draw, select, or search for a target offensive tactic. The 2D player trajectories of the target tactic are then converted into 3D player animation immediately to provide virtual reality content for experiencing and practicing the target basketball tactic. Through the VR environment, the learner can vividly experience how a tactic is executed in a global view or from a specific player's viewing direction. The basketball tactic movement guidance and virtual defenders are rendered in our VR system according to the target offensive tactic and the learner's head pose. We also design an experimental process to validate that the proposed VR training system not only makes the learner feel more like playing in a real basketball game but also improves the efficiency and effectiveness of learning new basketball tactics.

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