✍️ Abstract

🔒 Prerequisites

• Non

🤔 Motivation

3D face modeling은 high-end와 low-end의 quality gap이 매우 크다.

High-end models : Photo-realistic but require manual labor

Low-end models : Simple but lack realism

FLAME aims to move low-ends to high-end by a generic 3D face models that are compact, can fit to data, capture realistic details, and enable animation.

📌 Main Method

Model Formulation

• Geometric deformation due to intrinsic shape, pose changes and expression
• Use standard vertex based linear blend skinning with N = 5023 vertices, K = 4 joints
  • ❓Linear Blend Skinning (LBS)
• Flame can be described by the function

$$ M(\vec{\beta}, \vec{\theta}, \vec{\psi}): \mathbb{R}^{|\vec{\beta}| \times|\vec{\theta}| \times|\vec{\psi}|} \rightarrow \mathbb{R}^{3 N} $$

where inputs $\vec{\beta} \in \mathbb{R}^{|\vec{\beta}|}$, $\vec{\theta} \in \mathbb{R}^{|\vec{\theta}|}$, $\vec{\psi} \in \mathbb{R}^{|\vec{\psi}|}$ are each coefficient for shape, pose and expression

• 📌모델의 자세한 설명
• More formally, the model can be defined as the following