2D–3D geometric fusion network using multi-neighbourhood graph convolution for RGB-D indoor scene classification
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Multi-modal fusion has been proved to help enhance the performance of scene classification tasks. This paper presents a 2D-3D Fusion stage that combines 3D Geometric Features with 2D Texture Features obtained by 2D Convolutional Neural Networks. To get a robust 3D Geometric embedding, a network that uses two novel layers is proposed. The first layer, Multi-Neighbourhood Graph Convolution, aims to learn a more robust geometric descriptor of the scene combining two different neighbourhoods: one in the Euclidean space and the other in the Feature space. The second proposed layer, Nearest Voxel Pooling, improves the performance of the well-known Voxel Pooling. Experimental results, using NYU-Depth-V2 and SUN RGB-D datasets, show that the proposed method outperforms the current state-of-the-art in RGB-D indoor scene classification task.
CitationMosella, A.; Ruiz-Hidalgo, J. 2D–3D geometric fusion network using multi-neighbourhood graph convolution for RGB-D indoor scene classification. "Information fusion", Desembre 2021, vol. 76, p. 46-54.