Novel view synthesis (NVS) of in-the-wild garments is a challenging task due significant occlusions, complex human poses, and cloth deformations. Prior methods rely on synthetic 3D training data consisting of mostly unoccluded and static objects, leading to poor generalization on real-world clothing. In this paper, we propose HoloGarment (Hologram-Garment), a method that takes 1-3 images or a continuous video of a person wearing a garment and generates 360{\deg} novel views of the garment in a canonical pose. Our key insight is to bridge the domain gap between real and synthetic data with a novel implicit training paradigm leveraging a combination of large-scale real video data and small-scale synthetic 3D data to optimize a shared garment embedding space. During inference, the shared embedding space further enables dynamic video-to-360{\deg} NVS through the construction of a garment "atlas" representation by finetuning a garment embedding on a specific real-world video. The atlas captures garment-specific geometry and texture across all viewpoints, independent of body pose or motion. Extensive experiments show that HoloGarment achieves state-of-the-art performance on NVS of in-the-wild garments from images and videos. Notably, our method robustly handles challenging real-world artifacts -- such as wrinkling, pose variation, and occlusion -- while maintaining photorealism, view consistency, fine texture details, and accurate geometry. Visit our project page for additional results: https://johannakarras.github.io/HoloGarment
翻译:野外服装的新视角合成是一项具有挑战性的任务,主要由于存在严重的遮挡、复杂的人体姿态以及布料形变。现有方法依赖于主要由无遮挡静态物体构成的合成3D训练数据,导致其在真实世界服装上的泛化能力较差。本文提出HoloGarment(全息服装),该方法接收1-3张图像或一段人物穿着服装的连续视频,并生成该服装在规范姿态下的360°新视角。我们的核心洞见在于,通过一种新颖的隐式训练范式,结合利用大规模真实视频数据与小规模合成3D数据来优化共享的服装嵌入空间,从而弥合真实数据与合成数据之间的领域鸿沟。在推理阶段,通过对特定真实世界视频上的服装嵌入进行微调以构建服装"图集"表示,该共享嵌入空间进一步实现了从动态视频到360°新视角合成的能力。该图集捕获了所有视角下服装特定的几何与纹理信息,且独立于人体姿态或运动。大量实验表明,HoloGarment在基于图像和视频的野外服装新视角合成任务上达到了最先进的性能。值得注意的是,我们的方法能够鲁棒地处理具有挑战性的真实世界伪影——例如褶皱、姿态变化和遮挡——同时保持照片级真实感、视角一致性、精细的纹理细节和准确的几何形状。请访问我们的项目页面以获取更多结果:https://johannakarras.github.io/HoloGarment