metadata

title: RetinaGAN
emoji: 😻
colorFrom: gray
colorTo: red
sdk: streamlit
sdk_version: 1.19.0
app_file: app.py
pinned: false
license: mit

RetinaGAN

Code Repository for: High-Fidelity Diabetic Retina Fundus Image Synthesis from Freestyle Lesion Maps

About

RetinaGAN a two-step process for generating photo-realistic retinal Fundus images based on artificially generated or free-hand drawn semantic lesion maps.

StyleGAN is modified to be conditional in to synthesize pathological lesion maps based on a specified DR grade (i.e., grades 0 to 4). The DR Grades are defined by the International Clinical Diabetic Retinopathy (ICDR) disease severity scale; no apparent retinopathy, {mild, moderate, severe} Non-Proliferative Diabetic Retinopathy (NPDR), and Proliferative Diabetic Retinopathy (PDR). The output of the network is a binary image with seven channels instead of class colors to avoid ambiguity.

The generated label maps are then passed through SPADE, an image-to-image translation network, to turn them into photo-realistic retina fundus images. The input to the network are one-hot encoded labels.

Usage

Download model checkpoints (see here for details) and run the model via Streamlit. Start the app via streamlit run web_demo.py.

Example Images

Example retina Fundus images synthesised from Conditional StyleGAN generated lesion maps. Top row: synthetically generated lesion maps based on DR grade by Conditional StyleGAN. Other rows: synthetic Fundus images generated by SPADE. Images are generated sequentially with random seed and are not cherry picked.

grade 0	grade 1	grade 2	grade 3	grade 4

Cite this work

If you find this work useful for your research, give us a kudos by citing:

@article{hou2023high,
  title={High-fidelity diabetic retina fundus image synthesis from freestyle lesion maps},
  author={Hou, Benjamin},
  journal={Biomedical Optics Express},
  volume={14},
  number={2},
  pages={533--549},
  year={2023},
  publisher={Optica Publishing Group}
}