ExAvatar：通过简短视频克隆人像并转化为3D数字形象
ExAvatar项目由DGIST和Meta公司合作研发，旨在利用虚拟现实（VR）和增强现实（AR）技术创造逼真的3D数字化身。该技术通过一段视频捕捉用户全身动作、面部表情及手部姿势，将其转化为栩栩如生的3D数字形象。其创新点在于采用SMPL-X全身参数化网格模型精确捕捉人体姿势，并结合3D高斯溅射技术提升渲染效果和真实度。核心功能包括全身3D驱动，支持全面动画，以及混合表示法，确保几何和外观一致性，减少伪影。通过短时间手机扫描即可创建3D头像，操作便捷。技术优化了面部表情和姿势的多样性，提升了自然度和适应性，优于现有3D头像生成技术。ExAvatar通过混合表示方法，将每个3D高斯视为表面顶点，与SMPL-X网格拓扑结构相匹配，实现高质量的视觉效果。
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