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Where to Focus: Investigating Hierarchical Attention Relationship for Fine-Grained Visual Classification

This repository hosts the source code of our paper: [ECCV 2022] Where to Focus: Investigating Hierarchical Attention Relationship for Fine-Grained Visual Classification. We propose a CrossHierarchical Region Feature (CHRF) learning framework to leverage human attention mechanism for fine-grained visual classification. A dataset of Attention Reinforced Images on Species TaxonOmy (ARISTO) is collected to record human gaze data for human attention monitoring.

Collected human gaze

The .pkl files in the dataset directory save the human gaze point coordinates on images of CUB when performing hierachycal fine-grained classification tasks.

For each image, we present

'img_id': the index of the image in CUB, refer to dataset/images.txt
'times': timestamp
'x' and 'y': coordinates of gaze points in a 1280x720 image
'hierarchy': current category hierarchy 
'label': category label in current hierarchy 

We present a visualization tool dataset/visual_human_gaze.py for further reference.

Training

Pick one configuration file you like in configs, and run with it.

python tools/train_net.py --config-file configs/${config file} --num-gpus 1

Note: The overall code framework is borrowed from detectron2.

Test

Similar to training, run

python tools/train_net.py --config-file configs/${config file} --num-gpus 1 --resume --eval-only

Citation

@inproceedings{liu2022focus,
  title={Where to Focus: Investigating Hierarchical Attention Relationship for Fine-Grained Visual Classification},
  author={Liu, Yang and Zhou, Lei and Zhang, Pengcheng and Bai, Xiao and Gu, Lin and Yu, Xiaohan and Zhou, Jun and Hancock, Edwin R},
  booktitle={Computer Vision--ECCV 2022: 17th European Conference, Tel Aviv, Israel, October 23--27, 2022, Proceedings, Part XXIV},
  pages={57--73},
  year={2022},
  organization={Springer}
}