Analysis of PointNet : a DNN designed to work directly on Point Cloud Data to solve tasks like Classification, Parts Segmentation and Semantic Segmentation
Other approaches working on Point Cloud typically require a pre-processing step to transform it into 3D Voxel or RGB-like Image hence a WxHxC Tensor but this kind of strategy has some limitations
it increases the Data to Process as the target data structures are more dense than the original Point Cloud
it requires some inductive bias at the pre-processing step (manually engineered features, manually set hyperparam) which can be suboptimal or at least not as good as the data learned ones
Overview
PointNet: Deep Learning on Point Sets for 3D Classification and Segmentation
Arxiv: https://arxiv.org/abs/1612.00593
GitHub: https://github.com/charlesq34/pointnet
Analysis of PointNet : a DNN designed to work directly on Point Cloud Data to solve tasks like Classification, Parts Segmentation and Semantic Segmentation