Author

Wei-Yuan Zhang

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Preprint Sep 2026

Instance Segmentation and Fine-grained Classification for Urban Buildings with Adaptive Region Dividing and Spatially-Supervised Contrastive Learning

Accurate instance-level and functional understanding of urban buildings in large-scale point clouds is essential for digital city modeling and urban analysis. However, the extensive spatial coverage of urban scenes leads most existing methods to rely on predefined blocks for training and evaluation, although such parti...

Wei-Yuan Zhang, Qi Zhang, Hui-Dan Huang · 0 citations

#diffusion models Preprint Sep 2026

StreetDiff: Multi-view Street Scenes Generation via Cross-view Consistent Multi-view Stable Diffusion with Structure Prompts

The proposed StreetDiff introduces a Panorama--Perspective Synergy design to decouple global layout reasoning from local detail synthesis, and incorporates a Panorama Alignment Module (PAM) that establishes spherical-projection-based attention constraints across views to achieve robust cross-view coherence in challengi...

Qi Zhang, Yanyifan Wang, Wei-Yuan Zhang et al. · 0 citations