Background Animation Generator: Interactive Scene Design based on Motion Graph

In this paper, an interactive background scene generation and editing system is proposed based on improved motion graph. By analyzing the motion of an input animation with limited length, our system could synthesize large amount of various motions to yield a composting scene animation with unlimited length by connecting the input motion pieces through smooth transitions based on a motion graph layer, which is generated by using independent component analysis (ICA). The smooth connected motions are obtained by searching the best path according to specified circumstances. And finally, the result is optimized by repeatedly substituting animation subsequences. To construct an ideal scene, user can interactively specify some physical constraints of the environment on keyframes, such as wind direction or velocity of flow, even one simple path for a character to follow, and the system would automatically generate continuous and natural motion in accordance with them.