Automatic estimation of 3D human pose from monocular RGB images is a challenging and unsolved problem in computer vision. In a supervised manner, approaches heavily rely on laborious annotations and present hampered generalization ability due to the limited diversity of 3D pose datasets. To address these challenges, we propose a unified framework that leverages mask as supervision for unsupervised 3D pose estimation. With general unsupervised segmentation algorithms, the proposed model employs skeleton and physique representations that exploit accurate pose information from coarse to fine. Compared with previous unsupervised approaches, we organize the human skeleton in a fully unsupervised way which enables the processing of annotation-free data and provides ready-to-use estimation results. Comprehensive experiments demonstrate our state-of-the-art pose estimation performance on Human3.6M and MPI-INF-3DHP datasets. Further experiments on in-the-wild datasets also illustrate the capability to access more data to boost our model. Code will be available at https://github.com/Charrrrrlie/Mask-as-Supervision.

通过利用掩膜监督进行无监督三维姿势估计，本文提出了一个统一框架，该框架利用从粗到精的骨架和人体表示，从而实现了对无标注数据的处理和可直接使用的估计结果。实验证明了我们在Human3.6M和MPI-INF-3DHP数据集上的最新姿势估计性能，并通过在野外数据集上的进一步实验说明了模型具有获取更多数据以提升性能的能力。

使用面具作为监督：利用统一的面具信息进行无监督的3D姿势估计