Abstract:We describe an approach to large-scale indoor place recognition that aggregates low-level colour and geometric features with high-level semantic features. We use a deep learning network that takes in RGB point clouds and extracts local features with five 3-D kernel point convolutional (KPConv) layers. We specifically train the KPConv layers on the semantic segmentation task to ensure that the extracted local features are semantically meaningful. Then, feature maps from all the five KPConv layers are concatenat… Show more
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