Dense-Resolution Network for Point Cloud Classification and Segmentation

Point cloud analysis is attracting attention from Artificial Intelligence research since it can be extensively applied for robotics, Augmented Reality, self-driving, etc. However, it is always challenging due to problems such as irregularities, unorderedness, and sparsity. In this article, we propose a novel network named Dense-Resolution Network for point cloud analysis. This network is designed to learn local point features from point cloud in different resolutions. In order to learn local point groups more intelligently, we present a novel grouping algorithm for local neighborhood searching and an effective error-minimizing model for capturing local features. In addition to validating the network on widely used point cloud segmentation and classification benchmarks, we also test and visualize the performances of the components. Comparing with other state-of-the-art methods, our network shows superiority.