Differential Diffusion: Giving Each Pixel its strength

Eran Levin, Ohad Fried
Tel Aviv University, Reichman University
Diffusion models have revolutionized image generation and editing, producing state-of-the-art results in conditioned and unconditioned image synthesis. While current techniques enable user control over the degree of change in an image edit, the controllability is limited to global changes over an entire edited region. This paper introduces a novel framework that enables customization of the amount of change per pixel or per image region. Our framework can be integrated into any existing diffusion model, enhancing it with this capability. Such granular control on the quantity of change opens up a diverse array of new editing capabilities, such as control of the extent to which individual objects are modified, or the ability to introduce gradual spatial changes. Furthermore, we showcase the framework's effectiveness in soft-inpainting---the completion of portions of an image while subtly adjusting the surrounding areas to ensure seamless integration. Additionally, we introduce a new tool for exploring the effects of different change quantities. Our framework operates solely during inference, requiring no model training or fine-tuning. We demonstrate our method with the current open state-of-the-art models, and validate it via both quantitative and qualitative comparisons, and a user study.

Table of Contents

• Requirements
• Installation
• Usage

Requirements

• Python (version 3.9)
• GPU (NVIDIA CUDA compatible)
• Virtualenv (optional but recommended)

Installation

• Create a virtual environment (optional but recommended):

  python -m venv venv

  Activate the virtual environment:

  On Windows:

  venv\Scripts\activate

  On Unix or MacOS:

  source venv/bin/activate

• Install the required dependencies:

  pip install -r requirements.txt

Usage

• Ensure that your virtual environment is activated.

• Make sure that your GPU is properly set up and accessible.

• For Stable Diffusion 2.1:

  • Run the script:

  python SD2/run.py

• For Stable Diffusion XL:

  • Run the script:

  python SDXL/run.py

• For Kandinsky 2.2:

  • Run the script:

  python Kandinsky/run.py

• For DeepFloyd IF:

  • Run the script:

  python IF/run.py

Citation

@misc{levin2023differential,
      title={Differential Diffusion: Giving Each Pixel Its Strength}, 
      author={Eran Levin and Ohad Fried},
      year={2023},
      eprint={2306.00950},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}