Outpainting with Stable Diffusion on an infinite canvas.

Powered by Stable Diffusion inpainting model, this project now works well. However, the quality of results is still not guaranteed. You may need to do prompt engineering, change the size of the selection, reduce the size of the outpainting region to get better outpainting results.

The project now becomes a web app based on PyScript and Gradio. For Jupyter Notebook version, please check out the ipycanvas branch.

Pull requests are welcome for better UI control, ideas to achieve better results, or any other improvements.

Update: the project add photometric correction to suppress seams, to use this feature, you need to install fpie: pip install fpie (Linux/MacOS only)

• Setup for Windows: setup_guide
• Setup for Linux: setup_guide
• Setup for MacOS: setup_guide
• Running with Docker on Windows or Linux with NVIDIA GPU: run_with_docker
• Usages: usage

• The result is a black square:
  • False positive rate of safety checker is relatively high, you may disable the safety_checker
  • Some GPUs might not work with fp16: python app.py --fp32 --lowvram
• What is the init_mode
  • init_mode indicates how to fill the empty/masked region, usually patch_match is better than others
• Why not use postMessage for iframe interaction
  • The iframe and the gradio are in the same origin. For postMessage version, check out gradio-space version

• The canvas is implemented with NumPy + PyScript (the project was originally implemented with ipycanvas inside a jupyter notebook), which is relatively inefficient compared with pure frontend solutions.
• By design, the canvas is infinite. However, the canvas size is finite in practice. Your RAM and browser limit the canvas size. The canvas might crash or behave strangely when zoomed out by a certain scale.
• The canvas requires internet: You can deploy and serve PyScript, Pyodide, and other JS/CSS assets with a local HTTP server and modify index.html accordingly.
• Photometric correction might not work (taichi does not support the multithreading environment). A dirty hack (quite unreliable) is implemented to move related computation inside a subprocess.
• Stable Diffusion inpainting model is much slower when selection size is larger than 512x512

The code of perlin2d.py is from https://stackoverflow.com/questions/42147776/producing-2d-perlin-noise-with-numpy/42154921#42154921 and is not included in the scope of LICENSE used in this repo.

The submodule glid_3_xl_stable is based on https://github.com/Jack000/glid-3-xl-stable

The submodule PyPatchMatch is based on https://github.com/vacancy/PyPatchMatch

The code of postprocess.py and process.py is modified based on https://github.com/Trinkle23897/Fast-Poisson-Image-Editing

The code of convert_checkpoint.py is modified based on https://github.com/huggingface/diffusers/blob/main/scripts/convert_original_stable_diffusion_to_diffusers.py

The submodule sd_grpcserver and handleImageAdjustment() in utils.py are based on https://github.com/hafriedlander/stable-diffusion-grpcserver and https://github.com/parlance-zz/g-diffuser-bot

w2ui.min.js and w2ui.min.css is from https://github.com/vitmalina/w2ui. fabric.min.js is a custom build of https://github.com/fabricjs/fabric.js

interrogate.py is based on https://github.com/pharmapsychotic/clip-interrogator v1, the submodule blip_model is based on https://github.com/salesforce/BLIP