README.md

Frequency Compensated Diffusion Model for Real-scene Dehazing

This is an official implementation of Frequency Compensated Diffusion Model for Real-scene Dehazing by Pytorch.

Getting started

Installation

• This repo is a modification on the SR3 Repo.

• Install third-party libraries.

pip install -r requirement.txt 

Data Prepare

Download train/eval data from the following links:

Training: RESIDE

Testing: I-Haze / O-Haze / Dense-Haze / Nh-Haze / RTTS

mkdir dataset

Re-organize the train/val images in the following file structure:

 #Training data file structure
dataset/RESIDE/
├── HR # ground-truth clear images.
├── HR_hazy_src # hazy images.
└── HR_depth # depth images (Generated by MonoDepth (github.com/OniroAI/MonoDepth-PyTorch)).

#Testing data (e.g. DenseHaze) file structure
dataset/{name}/
├── HR # ground-truth images.
└── HR_hazy # hazy images.

then make sure the correct data paths ("dataroot") in config/framework_da.json.

Pretrained Model

We prepared the pretrained model at:

Type	Weights
Generator	OneDrive

Evaluation

Download the test set (e.g O-Haze). Simply put the test images in "dataroot" and set the correct path in config/framework_da.json about "dataroot";

Download the pretrained model and set the correct path in config/framework_da.json about "resume_state":

    "path": {
      "log": "logs",
      "tb_logger": "tb_logger",
      "results": "results",
      "checkpoint": "checkpoint",
      "resume_state": "./ddpm_fcb_230221_121802"
    }
    "val": {
      "name": "dehaze_val",
      "mode": "LRHR",
      "dataroot": "dataset/O-HAZE-PROCESS",
      ...
    }

# infer
python infer.py -c [config file]

The default config file is config/framework_da.json. The outputs images are located at /data/diffusion/results. One can change output path in core/logger.py.

Train

Prepare train dataset and set the correct paths in config/framework_da.json about "datasets";

If training from scratch, make sure "resume_state" is null in config/framework_da.json.

# infer
python train.py -c [config file]

Results

Quantitative comparison on real-world hazy data (RTTS). Bold and underline indicate the best and the second-best, respectively.

Todo

• Upload configs and pretrained models

• Upload evaluation scripts

• Upload train scripts