Title
CoSMix: Compositional Semantic Mix for Domain Adaptation in 3D LiDAR Segmentation.
Abstract
3D LiDAR semantic segmentation is fundamental for autonomous driving. Several Unsupervised Domain Adaptation (UDA) methods for point cloud data have been recently proposed to improve model generalization for different sensors and environments. Researchers working on UDA problems in the image domain have shown that sample mixing can mitigate domain shift. We propose a new approach of sample mixing for point cloud UDA, namely Compositional Semantic Mix (CoSMix), the first UDA approach for point cloud segmentation based on sample mixing. CoSMix consists of a two-branch symmetric network that can process labelled synthetic data (source) and real-world unlabelled point clouds (target) concurrently. Each branch operates on one domain by mixing selected pieces of data from the other one, and by using the semantic information derived from source labels and target pseudo-labels. We evaluate CoSMix on two large-scale datasets, showing that it outperforms state-of-the-art methods by a large margin (Our code is available at https://github.com/saltoricristiano/cosmix-uda).
Year
DOI
Venue
2022
10.1007/978-3-031-19827-4_34
European Conference on Computer Vision
Keywords
DocType
Citations 
Unsupervised domain adaptation,Point clouds,Semantic segmentation,LiDAR
Conference
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Cristiano Saltori100.68
Fabio Galasso201.01
Giuseppe Fiameni300.68
Nicu Sebe47013403.03
Elisa Ricci 00025139373.75
Fabio Poiesi600.68