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Dongzhen Liu

3 accepted papers

2026

Density-Aware Point Cloud Upsampling via Relational Graph Flow Matching

RA-L 2026

Real-world point clouds exhibit non-uniform density distributions, varying across distance and scale. Conventional upsampling methods typically treat points homogeneously, which over-smooths sparse regions while over-processing dense regions. We propose PURF, a density-aware point cloud upsampling f

Cited by 0SourceScholar
2025

GraphDAE-PU: Graph Denosing Auto-Encoder for Arbitrary-Scale Point Cloud Upsampling

ICASSP 2025accepted

Existing learning-based arbitrary-scale point cloud upsampling methods are usually challenged with limited point cloud feature representation and noise-sensitive refinement of coarse point cloud. In this paper, we introduce GraphDAE-PU, a novel framework for point cloud upsampling that addresses the…

Cited by 0SourceScholar