Portrait Neural Radiance Fields from a Single Image

• URL: http://arxiv.org/abs/2012.05903v2
• Date: Fri, 16 Apr 2021 20:07:13 GMT
• Title: Portrait Neural Radiance Fields from a Single Image
• Authors: Chen Gao and Yichang Shih and Wei-Sheng Lai and Chia-Kai Liang and Jia-Bin Huang
• Abstract summary: We present a method for estimating Neural Radiance Fields (NeRF) from a single portrait. We propose to pretrain the weights of a multilayer perceptron (MLP), which implicitly models the volumetric density. To improve the generalization to unseen faces, we train the canonical coordinate space approximated by 3D face morphable models. We quantitatively evaluate the method using controlled captures and demonstrate the generalization to real portrait images, showing favorable results against state-of-the-arts.
• Score: 68.66958204066721
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a method for estimating Neural Radiance Fields (NeRF) from a single headshot portrait. While NeRF has demonstrated high-quality view synthesis, it requires multiple images of static scenes and thus impractical for casual captures and moving subjects. In this work, we propose to pretrain the weights of a multilayer perceptron (MLP), which implicitly models the volumetric density and colors, with a meta-learning framework using a light stage portrait dataset. To improve the generalization to unseen faces, we train the MLP in the canonical coordinate space approximated by 3D face morphable models. We quantitatively evaluate the method using controlled captures and demonstrate the generalization to real portrait images, showing favorable results against state-of-the-arts.

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