Editing method of virtual human motion path based on motion cycle step-length

An editing method of virtual human motion path based on movement cycle step-length is presented: it uses the Cardinal spline interpolation to extract the original path and equably sets the path editing control points; alters the positions of path editing control points to generate a new path and adjusts the position and orientation of the original motion sequence frame's root joint nodes on the new path; automatically judges any path curve segment that generates the problems of footstep disharmony after editing; for every incorrect curve segment, deletes the frames of general motion cycle step-length between the two path editing control points that contain incorrect curve segment based on the definition of motion cycle step-length and adjusts the spacing and moving direction of root nodes in every frame on the paths between the two control points; finally does constraint re-establish to all floor frames in the new path. The experimental results show that: the motion path editing method is simple and easy to operate. The generated virtual human motion is natural and smooth. It can effectively eliminate the footstep sliding phenomenon to improve the reusability of motion capture data.