DejAIvu: Identifying and Explaining AI Art on the Web in Real-Time with Saliency Maps

TL;DR

DejAIvu is a real-time Chrome extension that detects AI-generated images on the web using deep learning and provides visual explanations with saliency maps to promote transparency and accountability.

Contribution

It introduces a practical in-browser AI image detection tool with saliency-based explainability, combining efficient inference and user-friendly visualization.

Findings

High detection accuracy across multiple architectures

Low latency suitable for real-time browsing

Effective visualization of AI artifacts with saliency maps

Abstract

The recent surge in advanced generative models, such as diffusion models and generative adversarial networks (GANs), has led to an alarming rise in AI-generated images across various domains on the web. While such technologies offer benefits such as democratizing artistic creation, they also pose challenges in misinformation, digital forgery, and authenticity verification. Additionally, the uncredited use of AI-generated images in media and marketing has sparked significant backlash from online communities. In response to this, we introduce DejAIvu, a Chrome Web extension that combines real-time AI-generated image detection with saliency-based explainability while users browse the web. Using an ONNX-optimized deep learning model, DejAIvu automatically analyzes images on websites such as Google Images, identifies AI-generated content using model inference, and overlays a saliency heatmap to highlight AI-related artifacts. Our approach integrates efficient in-browser inference, gradient-based saliency analysis, and a seamless user experience, ensuring that AI detection is both transparent and interpretable. We also evaluate DejAIvu across multiple pretrained architectures and benchmark datasets, demonstrating high accuracy and low latency, making it a practical and deployable tool for enhancing AI image accountability. The code for this system can be found at https://github.com/Noodulz/dejAIvu.