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arXiv 1906.06962cs.ROcs.CV
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DeepTemporalSeg:三维LiDAR扫描的时间一致语义分割

DeepTemporalSeg: Temporally Consistent Semantic Segmentation of 3D LiDAR Scans

University of Freiburg(弗莱堡大学);Toyota Research Institute(丰田研究院)

Ayush Dewan, Wolfram Burgard

摘要:

理解环境的语义特征是自主机器人操作的关键使能器。在本文中,我们提出了一种深度卷积神经网络(DCNN),用于将LiDAR扫描的语义分割为汽车,行人或骑自行车的人。这种架构基于密集块,并有效地利用深度可分离卷积来限制参数的数量,同时仍然保持最先进的性能。为了使DCNN的预测在时间上一致,我们提出了一种基于贝叶斯滤波器的方法。该方法使用来自神经网络的预测来递归地估计扫描中的点的当前语义状态。该递归估计使用从先前扫描获得的知识,从而使预测在时间上一致并且对孤立的错误预测具有鲁棒性。我们比较我们提出的架构与其他国家的最先进的神经网络架构的性能,并报告大幅改善。对于建议的贝叶斯滤波器的方法,我们显示在KITTI跟踪基准的各种序列的结果。

英文摘要:

Understanding the semantic characteristics of the environment is a key enabler for autonomous robot operation. In this paper, we propose a deep convolutional neural network (DCNN) for the semantic segmentation of a LiDAR scan into the classes car, pedestrian or bicyclist. This architecture is based on dense blocks and efficiently utilizes depth separable convolutions to limit the number of parameters while still maintaining state-of-the-art performance. To make the predictions from the DCNN temporally consistent, we propose a Bayes filter based method. This method uses the predictions from the neural network to recursively estimate the current semantic state of a point in a scan. This recursive estimation uses the knowledge gained from previous scans, thereby making the predictions temporally consistent and robust towards isolated erroneous predictions. We compare the performance of our proposed architecture with other state-of-the-art neural network architectures and report substantial improvement. For the proposed Bayes filter approach, we show results on various sequences in the KITTI tracking benchmark.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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