An Implementation of Motion Capture Using Three CCD Cameras

• Main Authors: Jun Ren Wang, 王俊仁
• Other Authors: Hong Fa He
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/86502595119639750749

碩士 === 國立臺灣師範大學 === 工業教育研究所 === 90 === Because of aggressive virtual characters progressing of 3D image technology, which produce virtual humans, can move in 3D virtual space. But it is impossible to use a mouse to control virtual human to sing songs or dance. It costs a lot of time and doesn’t look like the real human motion. Using the motion capture system to capture a real actor''s motion makes a virtual human motion look like a real human motion. Now, some computer animation companies have bought the motion capture system to produce the human animation. But the cost of such motion capture system is very expensive; therefore, we have developed a motion capture system that customers can have at low price. In this study, the method, which captures the human motion in 3D space, uses black fabric to be the background, and the actor has to wear black cloth and then put color balls on 12 body joints. Using three CCD cameras to capture an actor’s motion can solve the missing joints problem when one camera can’t picture the body motion which is partly blocked whiling moving. In this study, we have developed the method to recognize the 12 color balls, to calculate the 12 joints 3D position data by the pictures which are captured by the three CCD cameras, and we have developed the method to calculate the 12 joints 3D position data to CSM (Character Studio Motion) format. So we can demonstrate the 3D virtual human motion on 3D software, such as 3ds max4 software. The method uses 3 personal computers and 3 CCD cameras only, the installed 3D software, and it combines the pictures on the cameras with virtual humans on the 3D software. It imitates the actor’s motion virtually.