Q-M-E/A3-FPN

A³-FPN: Asymptotic Content-Aware Pyramid Attention Network for Dense Visual Prediction

This repository is the checkpoints for our paper "A³-FPN: Asymptotic Content-Aware Pyramid Attention Network for Dense Visual Prediction". A³-FPN employs a horizontally-spread column network that enables asymptotically global feature interaction and disentangles each level from all hierarchical representations. In feature fusion, it collects supplementary content from the adjacent level to generate position-wise offsets and weights for context-aware resampling, and learns deep context reweights to improve intra-category similarity. In feature reassembly, it further strengthens intra-scale discriminative feature learning and reassembles redundant features based on information content and spatial variation of feature maps. Extensive experiments on MS COCO, VisDrone2019-DET and Cityscapes demonstrate that A³-FPN can be easily integrated into state-of-the-art CNN and Transformer-based architectures, yielding remarkable performance gains.

If you find A³-FPN useful in your research, please consider citing:

@article{qin2026a3,
  title={A3-FPN: Asymptotic Content-Aware Pyramid Attention Network for Dense Visual Prediction},
  author={Qin, Meng'en and Song, Yu and Zhao, Quanling and Yang, Xiaodong and Che, Yingtao and Yang, Xiaohui},
  journal={arXiv preprint arXiv:2604.10210},
  year={2026}
}