Author

Yongxin Yang

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Preprint Sep 2026

UpDown-SC: Gravity-Canonicalized Dual-Envelope Scan Context for Indoor LiDAR Place Recognition

UpDown-SC is presented, a training-free polar descriptor that first canonicalizes gravity and then represents two complementary surfaces: the upper envelope of lower/middle structures and the lower envelope of overhead structures that gives the best or second-best F1max and AUPR under threshold-based acceptance while r...

Jie Xu, Yong-Xin Yang, Zi-Yi Jin et al. · 0 citations

#artificial intelligence Preprint Nov 2025

MedVision: Benchmarking Quantitative Medical Image Analysis

This work introduces MedVision, a large-scale dataset and benchmark specifically designed to evaluate and improve VLMs on quantitative medical image analysis, and demonstrates how supervised and reinforcement fine-tuning on MedVision significantly enhances performance across detection, T/L size estimation, and A/D meas...

Yongcheng Yao, Yongshuo Zong, Raman Dutt et al. · 0 citations