Author

Haoran Xiong

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Preprint Oct 2026

CRAB: Cuboid-based Representation for As-built BIM from Point Clouds

As-built BIM reconstruction from point clouds demands semantic, volumetric, parametric, and editable building components, beyond 2D layouts or planar abstractions. Yet existing scan-to-BIM pipelines often rely on handcrafted rules, heuristic optimization, or manual correction, while learning-based methods fall short of...

Hao-Ran Xiong, Jing Wang, Shan-Shan Pan et al. · 0 citations

Preprint Jul 2026

GRE-Diff: Gaussian Room Embeddings for Structured Layout Diffusion

GRE-Diff, a controllable and interactive diffusion-based framework that automates the creation and editing of apartment floor plans under user-specified constraints, is proposed, offering a practical step toward bridging AI-driven automation and human creativity in spatial design.

Jing Wang, Haoran Xiong, Zihao Yan et al. · 0 citations