Uncertainty Estimation via Response Scaling for Pseudo-mask Noise Mitigation in Weakly-supervised Semantic Segmentation

Introduction

This is a PyTorch implementation of Uncertainty Estimation via Response Scaling for Pseudo-mask Noise Mitigation in Weakly-supervised Semantic Segmentation (AAAI2022), based on mmsegmentation. Please refer the classification phase to PMM and refer the segmentation phase to WSSS_MMSeg.

In this papper, we mitigate the noise of pseudo-mask in segmentation phase via uncertainty from response scaling which simulates the behavior of noise. This technique is applicable to all weakly-supervised semantic segmentation methods based on fully-supervised semantic segmentation.

Uncertainty visualization

Framework visualization

Preparation

(Extract code of BaiduYun: mtci)

Datasets and pretrained weights VOC12 OneDrive, BaiduYun; COCO14 BaiduYun; Pretrained weights OneDrive, BaiduYun

Pseduo-masks from classification phase Pseudo-masks (if you want to skip cls phase), VOC12 OneDrive, COCO14 BaiduYun

Intermediate segmentation weights for uncertainty and cyclic pseudo-mask Intermediate weights (if you want to skip first segmentation), BaiduYun

Released segmentation weights for test and visualization Released weights, BaiduYun

Once downloaded, execute the following commands to link the datasets and weights.

  git clone https://github.com/XMed-Lab/URN.git
  cd URN
  mkdir data
  cd  data
  ln -s [path to model files] models
  ln -s [path to voc12] voc12
  ln -s [path to coco2014] coco2014
  ln -s [path to your voc pseudo-mask] voc12/VOC2012/ppmg
  ln -s [path to your coco pseudo-mask] coco2014/voc_format/ppmg

Run the code

(If you don't run on server cluster based on srun, please modify the scripts "tools/dist_*.sh" refer to given scripts "tools/srun_*.sh")

Installation

  cd URN
  pip install mmcv==1.1.5
  pip install -e .

(If you meet installation problems, please refer to mmsegmentation)

Train segmentation for the first time (you can skip it by intermediate weights)

  cd URN
  bash tools/slurm_train.sh [cluster partition] python configs/pspnet_wsss/pspnet_res2net_20k_voc12aug_pus.py work_dirs/voc12_r2n_pus 8

Uncertainty estimation and generate cyclic pseudo-mask

  bash tools/slurm_test.sh [cluster partition] python configs/pspnet_wsss/pspnet_res2net_20k_voc12aug_uncertainty.py [intermediate weights] 8

Train segmentation with reweight strategy

  bash tools/slurm_train.sh [cluster partition] python configs/pspnet_wsss/pspnet_res2net_20k_voc12aug_urn.py work_dirs/voc12_r2n_urn 8

Evaluate

  bash tools/slurm_test.sh [cluster partition] python configs/pspnet_wsss/pspnet_res2net_20k_voc12aug_test.py [Released weights] 8 

(Draw the predictions in "data/voc12/VOC2012/urn_r2n_test" with VOC palette and upload to the server for test mIoU. Change "test.txt" in the config to "val.txt" to get the val mIoU)

Backbone	VOC12 val	VOC12 test	COCO14 val
ResNet-38	69.4%	70.6%	40.5%
ResNet-101	69.5%	69.7%	40.7%
ScaleNet-101	70.1%	70.8%	40.8%
Res2Net-101	71.2%	71.5%	41.5%

Notes:

• Contact: Yi Li (leee_liyi@163.com)

1. We provide other backbones, including ResNet101, ScaleNet101, Wide-ResNet38
2. Configs of COCO14 are provided in "configs/pspnet_wsss"
3. It's suggested to use multiple cluster nodes to accelerate the genetation of pseudo-mask when use "tools/slurm_test.sh"
4. Run "tools/run_pmm.sh" to get baselines of PMM

Citation

If this code is useful for your research, please consider citing:

@article{li2021uncertainty,
title={Uncertainty Estimation via Response Scaling for Pseudo-mask Noise Mitigation in Weakly-supervised Semantic Segmentation},
author={Li, Yi and Duan, Yiqun and Kuang, Zhanghui and Chen, Yimin and Zhang, Wayne and Li, Xiaomeng},
journal={arXiv preprint arXiv:2112.07431},
year={2021}
}