论文标题
雕塑家:使用学识渊博的参数发生器创建骨架一致的面部创建
SCULPTOR: Skeleton-Consistent Face Creation Using a Learned Parametric Generator
论文作者
论文摘要
近年来,由于其在数字人物,角色产生和动画中的广泛应用,人们对3D人脸建模的兴趣越来越大。现有方法压倒性地强调了对面部的外部形状,纹理和皮肤特性建模,而忽略了内部骨骼结构和外观之间的固有相关性。在本文中,我们使用学习的参数面部发电机提出了雕塑家,具有骨骼一致性的3D面部创作,旨在通过混合参数形式表示轻松创建解剖上正确和视觉上令人信服的面部模型。雕塑家的核心是露西(Lucy),这是与整形外科医生合作的第一个大型形状面部脸部数据集。我们的露西数据集以最古老的人类祖先之一的化石命名,其中包含正牙手术前后全人头的高质量计算机断层扫描(CT)扫描,这对于评估手术结果至关重要。露西(Lucy)包括144张扫描,对72名受试者(31名男性和41名女性)组成,其中每个受试者进行了两次CT扫描,并进行了恐惧后手术。根据我们的Lucy数据集,我们学习了一个新颖的骨骼一致的参数面部发电机雕塑家,可以创建独特且细微的面部特征,以帮助定义角色,同时保持生理声音。我们的雕塑家通过将3D脸的描绘成形状混合形状,姿势混合形状和面部表达混合形状,将头骨,面部几何形状和面部外观建模。与现有方法相比,雕塑家在面部生成任务中保留了解剖学正确性和视觉现实主义。最后,我们展示了雕塑家在以前看不见的各种花式应用中的鲁棒性和有效性。
Recent years have seen growing interest in 3D human faces modelling due to its wide applications in digital human, character generation and animation. Existing approaches overwhelmingly emphasized on modeling the exterior shapes, textures and skin properties of faces, ignoring the inherent correlation between inner skeletal structures and appearance. In this paper, we present SCULPTOR, 3D face creations with Skeleton Consistency Using a Learned Parametric facial generaTOR, aiming to facilitate easy creation of both anatomically correct and visually convincing face models via a hybrid parametric-physical representation. At the core of SCULPTOR is LUCY, the first large-scale shape-skeleton face dataset in collaboration with plastic surgeons. Named after the fossils of one of the oldest known human ancestors, our LUCY dataset contains high-quality Computed Tomography (CT) scans of the complete human head before and after orthognathic surgeries, critical for evaluating surgery results. LUCY consists of 144 scans of 72 subjects (31 male and 41 female) where each subject has two CT scans taken pre- and post-orthognathic operations. Based on our LUCY dataset, we learn a novel skeleton consistent parametric facial generator, SCULPTOR, which can create the unique and nuanced facial features that help define a character and at the same time maintain physiological soundness. Our SCULPTOR jointly models the skull, face geometry and face appearance under a unified data-driven framework, by separating the depiction of a 3D face into shape blend shape, pose blend shape and facial expression blend shape. SCULPTOR preserves both anatomic correctness and visual realism in facial generation tasks compared with existing methods. Finally, we showcase the robustness and effectiveness of SCULPTOR in various fancy applications unseen before.