Author

Lin Xu

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Jul 2026

MixDiffusion: Mixing Diffusion-based Uni-condition Text-to-Image Generation Models for Multi-condition Image Synthesis

Recent advances in text-to-image (T2I) generation have enabled controllable image synthesis by incorporating conditions beyond text. However, most existing diffusion-based methods are limited to a single type of control condition (e.g., bounding boxes or keypoints), which restricts their flexibility. To address this li...

Pengcheng Wan, Liang Han, Lin Xu et al. · arXiv.org · 0 citations

Preprint Aug 2026

DreOPD: Degraded-Reference Extrapolative On-Policy Distillation for Flow-matching Models

This work proposes DreOPD, a Degraded-reference extrapolative OPD method for flow-matching models that bridges these two paradigms, and converts implicit reward extrapolation into closed-form velocity regression, enabling extrapolative post-training with the stability of OPD.

Ming-Hung Lin, Cheng-Fei Cai, Lin Xu et al. · 2 citations