---
license: cc-by-sa-4.0
task_categories:
- image-classification
tags:
- diffusion
- image-generation
- ai-generated-content
---

# OpenSDI: Spotting Diffusion-Generated Images in the Open World

This dataset is designed to address the **OpenSDI challenge**: spotting diffusion-generated images in realistic, open-world scenarios. It is described in the paper: [](https://huggingface.co/papers/2503.19653)

**Project Page:** [https://iamwangyabin.github.io/OpenSDI/](https://iamwangyabin.github.io/OpenSDI/)

**OpenSDID Dataset Highlights:**

*   **User Diversity:** Simulates a wide range of user intentions and creative styles using diverse text prompts generated by VLMs.
*   **Model Innovation:** Includes images from multiple state-of-the-art diffusion models (SD1.5, SD2.1, SDXL, SD3, Flux.1) released after 2023.
*   **Manipulation Scope:** Covers the full spectrum of diffusion-based manipulation, from global image synthesis to precise local edits, object insertions, and background changes.

**Dataset Overview:**

| Model   | Training Set |          | Test Set |          | Total  |
| :------ | :----------- | :------- | :------- | :------- | :----- |
|         | Real         | Fake     | Real     | Fake     | Images |
| SD1.5   | 100K         | 100K     | 10K      | 10K      | 220K   |
| SD2.1   | -            | -        | 10K      | 10K      | 20K    |
| SDXL    | -            | -        | 10K      | 10K      | 20K    |
| SD3     | -            | -        | 10K      | 10K      | 20K    |
| Flux.1  | -            | -        | 10K      | 10K      | 20K    |
| **Total** | **100K**   | **100K** | **50K**  | **50K**  | **300K** |

**Download:**

*   **OpenSDI Training Dataset:** [https://huggingface.co/datasets/nebula/OpenSDI_train](https://huggingface.co/datasets/nebula/OpenSDI_train)
*   **OpenSDI Testing Dataset:** This repository

This dataset is for academic use and is distributed under the [CC BY-SA 4.0 license](https://creativecommons.org/licenses/by-sa/4.0/). Real images come from [megalith-10m](https://huggingface.co/datasets/madebyollin/megalith-10m).