lzrobots / GALD-DGCNet

Source code and models of GALD net :tada:

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GALD-Net & Dual-Seg Net (BMVC-2019)

This is PyTorch re-implementation of GALD-net and Dual-Seg. Both papers were accepted by BMVC-2019 and achieve state-of-the-art results on the Cityscapes and Pascal Context datasets.

High Performance Road Scene Semantic Segmentaion 🎉

There is also a co-current repo for Fast Road Scene Semantic Segmentation:Fast_Seg and thanks for your attention 😃





Training & Validation


pytorch >= 1.1.0 apex opencv-python


Note that we use apex to speed up training process. At least 8 gpus with 12GB are needed since we need batch size at least 8 and crop size at least 800 on Cityscapes dataset. Please see train_distribute.py for the details.

sh ./exp/train_dual_seg_r50_city_finetrain.sh

You will get the model with 79.6~79.8 mIoU.

sh ./exp/train_dual_seg_r101_city_finetrain.sh

You will get the model with 80.3~80.4 mIoU.


sh ./exp/tes_dualseg_r50_city_finetrain.sh

Trained Model

Model trained with the Cityscapes fine dataset:

Dual-Seg-net: ResNet 50, ResNet 101

Some Advice on Training

Please see the Common.md for the details for using the coarse data training. Or you can refer to our GLAD paper(last part) for reference.

GALD-Net (BMVC 2019,arxiv)

We propose Global Aggregation then Local Distribution (GALD) scheme to distribute global information to each position adaptively according to the local information around the position. GALD net achieves top performance on Cityscapes dataset. Both source code and models will be available soon. The work was done at DeepMotion AI Research

DGCNet (BMVC 2019,arxiv)

We propose Dual Graph Convolutional Network (DGCNet) to model the global context of the input feature by modelling two orthogonal graphs in a single framework. (Joint work: University of Oxford, Peking University and DeepMotion AI Research)

Comparisons with state-of-the-art models on Cityscapes dataset

Method Conference Backbone mIoU(%)
RefineNet CVPR2017 ResNet-101 73.6
SAC ICCV2017 ResNet-101 78.1
PSPNet CVPR2017 ResNet-101 78.4
DUC-HDC WACV2018 ResNet-101 77.6
AAF ECCV2018 ResNet-101 77.1
BiSeNet ECCV2018 ResNet-101 78.9
PSANet ECCV2018 ResNet-101 80.1
DFN CVPR2018 ResNet-101 79.3
DSSPN CVPR2018 ResNet-101 77.8
DenseASPP CVPR2018 DenseNet-161 80.6
OCNet - ResNet-101 81.7
CCNet ICCV2019 ResNet-101 81.4
GALD-Net BMVC2019 ResNet50 80.8
GALD-Net BMVC2019 ResNet101 81.8
DGCN-Net BMVC2019 ResNet101 82.0
GALD-Net(use coarse data) BMVC2019 ResNet101 82.9
GALD-Net(use Mapillary) BMVC2019 ResNet101 83.3

Detailed Results are shown

GALD-Net: here
Both are (Single Model Result)


Please refer our paper for more detail. If you find the codebase useful, please consider citing our paper.

title={Global Aggregation then Local Distribution in Fully Convolutional Networks},
author={Li, Xiangtai and Zhang, Li and You, Ansheng and Yang, Maoke and Yang, Kuiyuan and Tong, Yunhai},
title={Dual Graph Convolutional Network for Semantic Segmentation},
author={Zhang, Li(*) and Li, Xiangtai(*) and Arnab, Anurag and Yang, Kuiyuan and Tong, Yunhai and Torr, Philip HS},


MIT License


Thanks to previous open-sourced repo:

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Source code and models of GALD net :tada:


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