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  • 學位論文

動作模擬系統結合虛擬實境應用於人員動作模擬之研究-以棒球揮棒動作為例

The study of human motion simulation based on the motion capture system combined with virtual reality

指導教授 : 周永燦

摘要


目前有許多的3D動畫軟體皆提供人物肢體動作編輯的功能,現今最為逼真且最省時的方法是使用動作捕捉系統(Motion Capture System)。此方法可捕捉肢體動作時骨架(Skeleton)運動的狀態,且以此動作資料來操控虛擬角色,所得的成果不管是細膩度或是精細度都超越其他的方法。繪製數位人體模型的工具相當多,包含Poser、MotionBuilder、3ds max等,藉由與動作捕捉系統的結合,將可製作數位人體動畫。 本研究將利用動作分析儀來捕捉受試者揮棒動作的細微特徵與正確的揮棒姿勢,再將其數據匯入動作分析與虛擬實境軟體中,套用數位人體模型與虛擬場景,進而模擬出虛擬打擊者的揮棒動作。本論文目的在於利用動作捕捉系統擷取人體動作數據,建立一套在虛擬環境下以虛擬人物模擬人員表現動作的研究流程步驟。 研究中運用動作擷取設備(Qualisys)將受試者身上的感光標記點隨著受試者表現揮棒動作進而捕捉感光球的位置座標數據,將其數據利用QTrac軟體轉換成動畫軟體可匯入的格式,利用動畫軟體構成打擊動作骨架,進而融入數位人體模型。最後藉由虛擬實境軟體將虛擬打擊人物及虛擬場景整合,配合互動參數設定,建構出虛擬打擊者揮棒動作的模擬系統,隨後並驗證及比對虛擬人物動作的真實性。

並列摘要


There are numerous 3D animation software that offer the function for editing the movement of personage’s limbs. Now, using the Motion Capture System is the best way to save time and to be lifelike. As limbs move, this method can record the state of the skeleton and control the virtual role through the motion data. Using the Motion Capture System allows us to express the motion data in smooth and meticulous degree better than any other method. There are many tools to create digital human models, such as Poser, MotionBuilder, 3ds max, etc. We can create digital human animations by combining these tools with the Motion Capture System. This research will make use of the motion analysis instrument to catch the experimenter’s slight characteristics and correct posture. Then, it will import the data to the motion analysis and virtual reality software, and apply the digital human model and virtual scene to stimulate the virtual person’s motion of swing. Our purpose is to make use of the motion capture system to pick and fetch the human motion date to create a standard research procedure that virtual personages simulate personnel motions under virtual environment. The marker’s position data, coming from the experiment showing in swing motion, is caught by motion capture equipment (Qualisys). QTrac software changes the data into another form which the animation software can be utilized. Therefore, the animation software completes the swing motion skeleton and incorporates the digital human model. Finally, in order to build up a swing simulation system including virtual hitter swing motions, we use virtual reality software to combine virtual personages with virtual scene and cooperate with interaction parameter establishment. Afterwards, we proof and analyze the authenticity of virtual personage’s motion.

參考文獻


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