We present a detail-driven deep neural network for point set upsampling. A
high-resolution point set is essential for point-based rendering and surface
reconstruction. Inspired by the recent success of neural image super-resolution
techniques, we progressively train a cascade of patch-based upsampling networks
on different levels of detail end-to-end. We propose a series of architectural
design contributions that lead to a substantial performance boost. The effect
of each technical contribution is demonstrated in an ablation study.
Qualitative and quantitative experiments show that our method significantly
outperforms the state-of-the-art learning-based and optimazation-based
approaches, both in terms of handling low-resolution inputs and revealing
high-fidelity details.

本研究提出了一种基于深度神经网络的点集上采样方法，通过层级渐进式地使用级联的基于 path 的上采样网络训练，优化各级别的细节并提供一系列架构设计改进，以实现对于低分辨率点云输入的高保真细节重建。在定性和定量实验中，本方法在处理低分辨率输入和揭示高保真度细节方面，均显著优于现有的基于学习和优化的方法。