ExAvatar：通過簡短視頻克隆人像並轉化爲3D數字形象
ExAvatar項目由DGIST和Meta公司合作研發，旨在利用虛擬現實（VR）和增強現實（AR）技術創造逼真的3D數字化身。該技術通過一段視頻捕捉用戶全身動作、面部表情及手部姿勢，將其轉化爲栩栩如生的3D數字形象。其創新點在於採用SMPL-X全身參數化網格模型精確捕捉人體姿勢，並結合3D高斯濺射技術提升渲染效果和真實度。核心功能包括全身3D驅動，支持全面動畫，以及混合表示法，確保幾何和外觀一致性，減少僞影。通過短時間手機掃描即可創建3D頭像，操作便捷。技術優化了面部表情和姿勢的多樣性，提升了自然度和適應性，優於現有3D頭像生成技術。ExAvatar通過混合表示方法，將每個3D高斯視爲表面頂點，與SMPL-X網格拓撲結構相匹配，實現高質量的視覺效果。
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