LegacyAvatars: 基于体素的面部虚拟角色用于传统图形管线
LegacyAvatars: Volumetric Face Avatars For Traditional Graphics Pipelines
AI总结:
LegacyAvatars通过基于参数面部模型的辐射场实现高效传统图形管线中的逼真3D面部虚拟角色渲染,支持在线流式传输和经典网格着色器渲染。
摘要:
我们介绍了一种新的表示方法,以实现高效渲染逼真3D面部虚拟角色。利用最近在基于参数面部模型的辐射场方面的进展,我们的方法实现了对复杂面部特征(包括头发、皮肤和眼睛)的可控体素渲染。在注册阶段,我们学习一组三维空间中的辐射流形,以提取一个显式的分层网格,以及外观和变形纹理。在部署阶段,这允许我们通过简单的线性混合和纹理在静态网格上的alpha合成来控制和动画面部。这种显式表示还使生成的虚拟角色能够高效地在线流式传输,然后使用传统网格和着色器基于的渲染在遗留图形平台上进行渲染,从而消除了任何定制工程或集成的需要。
英文摘要:
We introduce a novel representation for efficient classical rendering of photorealistic 3D face avatars. Leveraging recent advances in radiance fields anchored to parametric face models, our approach achieves controllable volumetric rendering of complex facial features, including hair, skin, and eyes. At enrollment time, we learn a set of radiance manifolds in 3D space to extract an explicit layered mesh, along with appearance and warp textures. During deployment, this allows us to control and animate the face through simple linear blending and alpha compositing of textures over a static mesh. This explicit representation also enables the generated avatar to be efficiently streamed online and then rendered using classical mesh and shader-based rendering on legacy graphics platforms, eliminating the need for any custom engineering or integration.
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