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• W2887799471 abstract "Real-world scenarios contain many structural patterns that, if appropriately extracted and modeled, can be used to reduce problems associated with sensor failure and occlusions while improving planning methods in such tasks as navigation and grasping. This paper devises a novel unsupervised procedure that models 3D structures from unorganized pointclouds as occupancy maps. Our methodology enables the learning of unique and arbitrarily complex features using a variational Bayesian convolutional auto-encoder, which compresses local information into a latent low-dimensional representation and then decodes it back in order to reconstruct the original scene, including color information when available. This reconstructive model is trained on features obtained automatically from a wide variety of scenarios, in order to improve its generalization and interpolative powers. We show that the proposed framework is able to recover partially missing structures and reason over occlusions with high accuracy while maintaining a detailed reconstruction of observed areas. To combine localized feature estimates seamlessly into a single global structure, we employ the Hilbert maps framework, recently proposed as a robust and efficient occupancy mapping technique, and introduce a new kernel for reproducing kernel Hilbert space projection that uses estimates from the reconstructive model. Experimental tests are conducted with large-scale 2D and 3D datasets, using both laser and monocular data, and a study of the impact of various accuracy–speed trade-offs is provided to assess the limits of the proposed methodology." @default.
• W2887799471 created "2018-08-22" @default.
• W2887799471 creator A5062619542 @default.
• W2887799471 creator A5063755961 @default.
• W2887799471 date "2018-08-14" @default.
• W2887799471 modified "2023-09-26" @default.
• W2887799471 title "Learning to reconstruct 3D structures for occupancy mapping from depth and color information" @default.
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• W2887799471 doi "https://doi.org/10.1177/0278364918783061" @default.
• W2887799471 hasPublicationYear "2018" @default.
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