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Linghan Xu

3 accepted papers

2026

VisRef: Visual Refocusing while Thinking Improves Test-Time Scaling in Multi-Modal Large Reasoning Models

CVPR 2026

Advances in large reasoning models have shown strong performance on complex reasoning tasks by scaling test-time compute through extended inference-time thinking. However, recent studies observe that in vision-dependent tasks, extended textual reasoning at inference time can often degrade performanc

Cited by 0SourceScholar
2025

Ground-V: Teaching VLMs to Ground Complex Instructions in Pixels

CVPR 2025poster

This work presents a simple yet effective workflow for automatically scaling instruction-following data to elicit pixel-level grounding capabilities of VLMs under complex instructions. In particular, we address five critical real-world challenges in text-instruction-based grounding: hallucinated ref…

Cited by 0SourcePDFScholar
2024

Threshold-Consistent Margin Loss for Open-World Deep Metric Learning

ICLR 2024poster

Existing losses used in deep metric learning (DML) for image retrieval often lead to highly non-uniform intra-class and inter-class representation structures across test classes and data distributions. When combined with the common practice of using a fixed threshold to declare a match, this gives r…

Cited by 4SourcePDFScholar