We present PartNet: a consistent, large-scale dataset of 3D objects annotated with fine-grained, instance-level, and hierarchical 3D part information. Our dataset consists of 573,585 part instances over 26,671 3D models covering 24 object categories. This dataset enables and serves as a catalyst for many tasks such as shape analysis, dynamic 3D scene modeling and simulation, affordance analysis, and others. Using our dataset, we establish three benchmarking tasks for evaluating 3D part recognition: fine-grained semantic segmentation, hierarchical semantic segmentation, and instance segmentation. We benchmark four state-of-the-art 3D deep learning algorithms for fine-grained semantic segmentation and three baseline methods for hierarchical semantic segmentation. We also propose a novel method for part instance segmentation and demonstrate its superior performance over existing methods.

本文介绍 PartNet 数据集，该数据集是一个一致的、大规模的、带有精细的、实例级别的和分层的 3D 部分信息的 3D 对象的注释数据集。我们提出了三种评估 3D 部分识别的挑战，包括细粒度语义分割、分层语义分割和实例分割，并基于该数据集进行了实验，结果表明其优越性能。

PartNet：大规模精细和分层3D对象部件理解基准测试