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Image dehazing with Multiscale Unet Generators and Multiscale Discriminators

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Image Dehazing Network

Prerequisite

Dowload data set from the link: : https://www.dropbox.com/s/wc3b0q0d3querb3/Dehazing_datasets.zip?dl=0
Create data folder:

mkdir data

Unzip dataset to data folder such that we have:

  • data/IndoorTestHazy
  • data/IndoorTrainGT
  • data/IndoorTrainHazy
  • data/OutdoorTestHazy
  • data/OutdoorTrainGT
  • data/OutdoorTrainHazy

Set up environment:

conda create -n dehaze python=3.6
conda activate dehaze
pip install -r requirement.txt

How to train

Train the network by run corresponding command below:

Indoor:

./net_train_indoor.sh

Outdoor:

./net_train_outdoor.sh

How to test

I provide pretrained model at url: https://drive.google.com/file/d/1WfsmkGmo504ZI7V19_t-euKDNqwW0woC/view?usp=sharing

upzip the pretrained model to src folder such that we have these folders:

  • resultIn/Net1/model/model_best.pt
  • resultOut/Net1/model/model_best.pt

Run test script to generate output images:

./net_test_in_out.sh

All the result will be store in val folder

In case that you want to test your model, read the test_model.sh and modify the pretrained_model path.

Evaluate NIQE

You can download MATLAB evaluation code at this link: https://www.dropbox.com/s/xpcqcucxjn2y28d/evaluation_code.zip?dl=0
Copy your output images into Input folder and run matlab file: evaluate_results.m to get NIQE score

Result

Indoor (NIQE) Outdoor(NIQE)
HAZY 6.4564 4.1471
OUR 3.6753 3.6608

Statistic on 1 GPU Titan X

Indoor Outdoor
Generator parameter 34.1M 34M
Discriminator parameter 5.5M 5.5M
Training time (10000 epoches) 52.9 hour 61.0 hour
Testing time 0.0241 0.1765

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