Real-time dynamic wrinkling of coarse animated cloth

Abstract

Figure 1: Coarse game-level cloth animation augmented with realistic looking wrinkles in real-time. AbstractDynamic folds and wrinkles are an important visual cue for creating believably dressed characters in virtual environments. Adding these fine details to real-time cloth visualization is challenging, as the low-quality cloth used for real-time applications often has no reference shape, an extremely low triangle count, and poor temporal and spatial coherence. We introduce a novel real-time method for adding dynamic, believable wrinkles to such coarse cloth animation. We trace spatially and temporally coherent wrinkle paths, overcoming the inaccuracies and noise in low-end cloth animation, by employing a two stage stretch tensor estimation process. We first employ a graph-cut segmentation technique to extract spatially and temporally reliable surface motion patterns, detecting consistent compressing, stable, and stretching patches. We then use the detected motion patterns to compute a per-triangle temporally adaptive reference shape and a stretch tensor based on it. We use this tensor to dynamically generate new wrinkle geometry on the coarse cloth mesh by taking advantage of the GPU tessellation unit. Our algorithm produces plausible fine wrinkles on real-world data sets at real-time frame rates, and is suitable for the current generation of consoles and PC graphics cards.

Fine Wrinkling on Coarsely Meshed Thin Shells

“…Although both methods generate a highresolution wrinkled surface whose coarse shape matches a coarse target, these tracking-based methods still require simulating wrinkles on a high-resolution mesh, in contrast to our approach based on coarse wrinkle-field kinematics. Several post-processing methods have been proposed that add dynamic wrinkles based on analyzing the strain tensor after a coarse-scale simulation [Gillette et al 2015;Rohmer et al 2010]; although real-time, these methods rely on user guidance to choose the proper wrinkle size, rather than inferring the correct wrinkles from the cloth physics. Zuenko et al [2019] predict the wrinkling of human skin, and other materials consisting of a stiff film coupled to a soft substrate.…”

SimulCap : Single-View Human Performance Capture With Cloth Simulation

“…Simulation of clothing has been investigated for more than 30 years. Some works focus on super realistic cloth simulation results using millions of triangles [60,54,27], while the others concentrate on improving the fidelity for real-time simulation [51,41,40,19,18,29,31,62,14,20,65,54]. Physics-based mass-spring models [51] or position based dynamics [41,40] are commonly used for simulation of cloth.…”

A review on modeling of flexible deformable object for dexterous robotic manipulation

“…Some surveys exist on this related research in the field of computer graphics: cloth modeling, 2 deformable modeling, 3,4 surgery simulation, 5 and manipulation planning. 6 Some improvement from different views in cloth modeling such as accuracy and stability, 7 numerical integration method, 8,9 mesh generation, 10,11 material properties, [12][13][14] and wrinkles formation [15][16][17][18][19][20] had been proposed. modeling and simulation, the mechanical properties such as weight or mass, elasticity, shear, bending, and friction are always the indispensable parameters for model to imitate the real objects.…”