FastAvatar

Pose-Invariant 3D Face Reconstruction via Feed-Forward Gaussian Splatting

In Submission

Rice University and Samsung Research America
Teaser

Our method reconstructs high-quality 3D faces from single images in just 10ms, regardless of input viewpoint.

Abstract

We present FastAvatar, a feed-forward framework for pose-invariant 3D face reconstruction from single images using 3D Gaussian Splatting. Our method directly predicts 3D Gaussian parameters in a single forward pass, eliminating the need for test-time optimization while handling arbitrary viewpoints.

Method Overview

Method

Canonical Model

We construct a canonical face model by averaging individual 3DGS models...

Decoder Network

Our decoder predicts identity-specific offsets from the canonical model...

View-Invariant Encoder

The encoder maps images from any viewpoint to consistent latent codes...

Demo (Feed-forward vs Full)

Input Image
Input

Single input view used to reconstruct the avatar.

Reconstruction Preview

Results

Comparison
Runtime
Latent

Paper

FastAvatar: Pose-Invariant 3D Face Reconstruction via Feed-Forward Gaussian Splatting

In Submission

@article{liang2025fastavatar,
  title={FastAvatar: Instant 3D Gaussian Splatting for Faces from Single Unconstrained Poses},
  author={Liang, Hao and Ge, Zhixuan and Tiwari, Ashish and Majee, Soumendu and Godaliyadda, GM and Veeraraghavan, Ashok and Balakrishnan, Guha},
  journal={arXiv preprint arXiv:2508.18389},
  year={2025}
}