ABSTRACT
We propose a method based on an animator’s technique to create an animation for fluttering objects in the wind such as hair and flag. As a preliminary study, we analyzed how the fluttering objects were expressed in the hand-drawn animations, and confirmed that there is a traditional technique commonly used by professional animators. In the case of hair, for example, the tip of the hair is often moved in the shape of a figure eight, and the remaining hair bundle is animated as if a wave caused by this movement is propagating along the hair. Based on this observation, we developed a system to reproduce this technique digitally. In this system, trajectories of a few control points on a hair bone are sketched by a user, and their motion are propagated to the whole hair bundle to represent the waving behavior. In this process, user can interactively adjust two parameters on swing speed and wave propagation delay. As system evaluation, we conducted a user test in which a sample animation was reproduced by several subjects using our system.
- Jun Xing, Rubaiat Habib Kazi, Tovi Grossman, Li-Yi Wei, Jos Stam, and George W. Fitzmaurice. 2016. Energy-Brushes: Interactive Tools for Illustrating Stylized Elemental Dynamics. In Proceedings of the 29th Annual Symposium on User Interface Software and Technology, UIST 2016, Tokyo, Japan, October 16-19, 2016. 755–766. https://doi.org/10.1145/2984511.2984585Google ScholarDigital Library
Index Terms
- A Method to Create Fluttering Hair Animations That Can Reproduce Animator’s Techniques
Recommendations
Digital reproduction of hair waving based on animator technique
SA '18: SIGGRAPH Asia 2018 PostersEven in animation production, which was once a hand-drawn creation, it has been increased speed and reduced costs by applying NPR technology. For example, there are researches and products for generating animations of waving hairs from a single image in ...
3D Hair sketching for real-time dynamic & key frame animations
Physically based simulation of human hair is a well studied and well known problem. But the “pure” physically based representation of hair (and other animation elements) is not the only concern of the animators, who want to “control” the creation and ...
The hair motion compositor: compositing dynamic hair animations in a production environment
SIGGRAPH '09: SIGGRAPH 2009: TalksDigital characters can appear in both live action and computer-animated movies. Most of them involve some form of dynamic hair or fur, often having to be both believable and heavily art-directed. No matter which dynamic hair solver a facility relies on, ...
Comments