My thesis describes a tool which creates speed-lines automatically in 3D computer animations. Speed-lines are usually used in comic books to express fast motions in a still image. They are also used in 2D animations. Although animations don't need speed-lines for motions, they are interesting graphic elements and give more sense of speed to the audience. However, speed-lines are not used in the 3D computer animation, so I have implemented the graphic element into the 3D computer animation. The combination of the 2D-looking speed-lines and the 3D computer animations makes a unique look that some animators might want. In addition, making speed-lines based on motions of moving objects or cameras, this tool can make 3D speed-lines which are very difficult to draw by hand.
