---
license: apache-2.0
papers:
- arxiv:2509.16944
pipeline_tag: image-text-to-text
library_name: transformers
---

# llava-v1.5-13b-roi-K15T3-152k-v1bf16Mheads-twiginit

This model is associated with the paper [Catching the Details: Self-Distilled RoI Predictors for Fine-Grained MLLM Perception](https://huggingface.co/papers/2509.16944).

## Introduction
While recent methods leverage a Region-of-Interest (RoI) mechanism to focus on salient areas, they typically present a difficult trade-off: training-based approaches depend on large-scale annotated datasets, while training-free methods that utilize the model's internal attention are computationally inefficient, requiring either multi-pass prefill stages or reliance on the slow auto-regressive decoding process for RoI identification.
We propose an efficient, annotation-free **S**elf-**D**istilled **R**egion **P**roposal **N**etwork (SD-RPN) that resolves this trade-off. Our core innovation is a pipeline that processes and denoises the noisy cross-attention maps from the MLLM's middle layers to generate pseudo-RoI labels. We then use these labels to train a lightweight and tunable Region Proposal Network (RPN) that is built upon the frozen MLLM backbone. Our RPN predicts the RoI in a single forward pass using features available from the MLLM's middle layers, completely decoupling RoI identification from the auto-regressive generation process and avoiding costly multi-pass operations.
<p align="center">
  <img src="https://github.com/YuHengsss/SD-RPN/raw/main/assets/framework.png" width="800" />
</p>

For more details, code, and training instructions, visit the [GitHub repository](https://github.com/YuHengsss/SD-RPN).

## Citation

If you use this model, please cite the original paper:

```bibtex
@misc{shi2025catching,
      title={Catching the Details: Self-Distilled RoI Predictors for Fine-Grained MLLM Perception}, 
      author={Yuheng Shi and Xiaohuan Pei and Minjing Dong and Chang Xu},
      year={2025},
      eprint={2509.16944},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}
```