# Visibility Constrained Generative Model for Depth-based 3D Facial Pose Tracking

arXiv: https://arxiv.org/abs/1905.02114 · HTML: https://mlsanity.com/paper/1905.02114/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 6 May 2019.

## Built on by (most cited first, 1 of 1)

- [GPU-Accelerated 3D Polygon Visibility Volumes for Synergistic Perception and Navigation](https://mlsanity.com/paper/2402.03135/) (2024)

## Abstract (arXiv)

In this paper, we propose a generative framework that unifies depth-based 3D facial pose tracking and face model adaptation on-the-fly, in the unconstrained scenarios with heavy occlusions and arbitrary facial expression variations. Specifically, we introduce a statistical 3D morphable model that flexibly describes the distribution of points on the surface of the face model, with an efficient switchable online adaptation that gradually captures the identity of the tracked subject and rapidly constructs a suitable face model when the subject changes. Moreover, unlike prior art that employed ICP-based facial pose estimation, to improve robustness to occlusions, we propose a ray visibility constraint that regularizes the pose based on the face model's visibility with respect to the input point cloud. Ablation studies and experimental results on Biwi and ICT-3DHP datasets demonstrate that the proposed framework is effective and outperforms completing state-of-the-art depth-based methods.