Cloth Animation with Time-dependent Persistent Wrinkles

TL;DR

This paper introduces a physics-inspired model for realistic cloth wrinkles that accounts for internal friction, plasticity, and their time-dependent behavior, improving visual realism in cloth animation.

Contribution

It presents a novel wrinkle model that captures the interplay of internal friction and plasticity, modeling time-dependent persistent wrinkles in cloth simulation.

Findings

Effective in simulating realistic spatial and temporal wrinkles

Versatile across different materials

Produces more detailed wrinkles than existing methods

Abstract

Persistent wrinkles are often observed on crumpled garments e.g., the wrinkles around the knees after sitting for a while. Such wrinkles can be easily recovered if not deformed for long, and otherwise be persistent. Since they are vital to the visual realism of cloth animation, we aim to simulate realistic looking persistent wrinkles. To this end, we present a physics-inspired fine-grained wrinkle model. Different from existing methods, we recognize the importance of the interplay between internal friction and plasticity during wrinkle formation. Furthermore, we model their time dependence for persistent wrinkles. Our model is capable of not only simulating realistic wrinkle patterns, but also their time-dependent changes according to how long the deformation is maintained. Through extensive experiments, we show that our model is effective in simulating realistic spatial and temporal varying wrinkles, versatile in simulating different materials, and capable of generating more fine-grained wrinkles than the state of the art.