Author

Seunghwan Hong

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Preprint Sep 2026

SCCM: Spherically Consistent Coarse Matching for ERP Dense Feature Correspondence

Dense feature matching between 360$^\circ$ panoramas underpins omnidirectional pose estimation, 3D reconstruction, and SLAM. Such panoramas are stored in the equirectangular projection (ERP), which unrolls the viewing sphere onto a flat chart and thereby introduces three distinct distortions -- a longitudinal seam (top...

Gyeonggwan Lee, Eunsoo Im, Seunghwan Hong et al. · 0 citations

Absolute Urban Floodwater–Level Estimation from CCTV Imagery via Laser-Scanning–Based Image Projection

Absolute estimation of urban floodwater levels from closed-circuit television (CCTV) imagery remains a challenge, particularly under nighttime illumination, reflections, and rain-induced noise, where segmentation-based and reference-object methods often degrade in performance. Although laser-scanning point clouds pro...

Yoonjo Choi, Seunghwan Hong, H. Sohn · Journal of computing in civi... · 0 citations

Preprint Aug 2026

CVSD-Reg: Cross-Modal Visual Semantic Prior Distillation for Robust LiDAR Registration

CVSD-Reg is proposed, a robust global LiDAR registration framework that distills visual semantic priors from a vision foundation model into LiDAR representations and generalizes to both single-sensor and zero-shot cross-sensor scenarios without sensor-specific adaptation and remains entirely camera-free at inference.

Eunsoo Im, Junghun Suh, Gyeonggwan Lee et al. · 0 citations