论文标题
GIDP：学习一个良好的初始化并引起大规模识别的描述术语
GIDP: Learning a Good Initialization and Inducing Descriptor Post-enhancing for Large-scale Place Recognition
论文作者
论文摘要
大规模的地方认可是一项基本但具有挑战性的任务，在自主驾驶和机器人技术中起着越来越重要的作用。现有的方法已经实现了可接受的良好性能，但是，其中大多数都集中精力设计精美的全球描述符学习网络结构。长期以来忽略了特征概括和描述后的特征概括和描述符的重要性。在这项工作中，我们提出了一种名为GIDP的新方法，以学习良好的初始化并引起描述符，以供大规模识别。特别是，在GIDP中分别提出了无监督的动量对比度云预处理模块和基于重新的描述符后增强模块。前者旨在在训练位置识别模型之前对Point Cloud编码网络进行良好的初始化，而后来的目的是通过推理时间重新掌握预测的全球描述符。室内和室外数据集的广泛实验表明，我们的方法可以使用简单和一般的点云编码主链实现最新性能。
Large-scale place recognition is a fundamental but challenging task, which plays an increasingly important role in autonomous driving and robotics. Existing methods have achieved acceptable good performance, however, most of them are concentrating on designing elaborate global descriptor learning network structures. The importance of feature generalization and descriptor post-enhancing has long been neglected. In this work, we propose a novel method named GIDP to learn a Good Initialization and Inducing Descriptor Poseenhancing for Large-scale Place Recognition. In particular, an unsupervised momentum contrast point cloud pretraining module and a reranking-based descriptor post-enhancing module are proposed respectively in GIDP. The former aims at learning a good initialization for the point cloud encoding network before training the place recognition model, while the later aims at post-enhancing the predicted global descriptor through reranking at inference time. Extensive experiments on both indoor and outdoor datasets demonstrate that our method can achieve state-of-the-art performance using simple and general point cloud encoding backbones.
