garment
DexGarmentLab: Dexterous Garment Manipulation Environment with Generalizable Policy
Garment manipulation is a critical challenge due to the diversity in garment categories, geometries, and deformations. Despite this, humans can effortlessly handle garments, thanks to the dexterity of our hands. However, existing research in the field has struggled to replicate this level of dexterity, primarily hindered by the lack of realistic simulations of dexterous garment manipulation. Therefore, we propose DexGarmentLab, the first environment specifically designed for dexterous (especially bimanual) garment manipulation, which features large-scale high-quality 3D assets for 15 task scenarios, and refines simulation techniques tailored for garment modeling to reduce the sim-to-real gap. Previous data collection typically relies on teleoperation or training expert reinforcement learning (RL) policies, which are labor-intensive and inefficient. In this paper, we leverage garment structural correspondence to automatically generate a dataset with diverse trajectories using only a single expert demonstration, significantly reducing manual intervention.
MPMAvatar: Learning 3D Gaussian Avatars with Accurate and Robust Physics-Based Dynamics
While there has been significant progress in the field of 3D avatar creation from visual observations, modeling physically plausible dynamics of humans with loose garments remains a challenging problem. Although a few existing works address this problem by leveraging physical simulation, they suffer from limited accuracy or robustness to novel animation inputs. In this work, we present MPMAvatar, a framework for creating 3D human avatars from multi-view videos that supports highly realistic, robust animation, as well as photorealistic rendering from free viewpoints. For accurate and robust dynamics modeling, our key idea is to use a Material Point Method-based simulator, which we carefully tailor to model garments with complex deformations and contact with the underlying body by incorporating an anisotropic constitutive model and a novel collision handling algorithm. We combine this dynamics modeling scheme with our canonical avatar that can be rendered using 3D Gaussian Splatting with quasi-shadowing, enabling high-fidelity rendering for physically realistic animations. In our experiments, we demonstrate that MPMAvatar significantly outperforms the existing state-of-the-art physics-based avatar in terms of (1) dynamics modeling accuracy, (2) rendering accuracy, and (3) robustness and efficiency. Additionally, we present a novel application in which our avatar generalizes to unseen interactions in a zero-shot manner--which was not achievable with previous learning-based methods due to their limited simulation generalizability. Our code will be publicly available.
Creative Leaders Talk Working With AI as a Collaborator With Humans
At the first-ever TIME100 AI Leadership Forum in New York City on Wednesday night, three leaders from music, fashion, and entertainment spoke during an onstage panel about how AI has changed how they worked creatively and the role they see for AI in the arts, moderated by TIME deputy editor Kelly Conniff. Across the board, the panelists agreed that AI is best used as partner and collaborator and cannot replace the distinctly human parts of the creative process. However, they can help users gain deeper knowledge, and shorten the more tedious parts of the brainstorming and ideation process. Christopher Brearton, partner at independent studio AGBO, said that using AI tools could look like leaving a story idea meeting with not only a rough plot and characters but also a quick mockup with images and videos of what it might look like. "Having an AI tool to help open that aperture and expand and continue the creative momentum, and not have breaks in your creative process, has been really fundamentally changing what we do," he said.
Learning 3D Garment Animation from Trajectories of A Piece of Cloth
Garment animation is ubiquitous in various applications, such as virtual reality, gaming, and film producing. Recently, learning-based approaches obtain compelling performance in animating diverse garments under versatile scenarios. Nevertheless, to mimic the deformations of the observed garments, data-driven methods require large scale of garment data, which are both resource-wise expensive and time-consuming. In addition, forcing models to match the dynamics of observed garment animation may hinder the potentials to generalize to unseen cases. In this paper, instead of using garment-wise supervised-learning we adopt a disentangled scheme to learn how to animate observed garments: 1).