Recent works have shown that diffusion models are able to memorize training images and emit them at generation time. However, the metrics used to evaluate memorization and its mitigation techniques suffer from dataset-dependent biases and struggle to detect whether a given specific image has been memorized or not.This paper begins with a comprehensive exploration of issues surrounding memorization metrics in diffusion models. Then, to mitigate these issues, we introduce , a novel evaluation method that provides a per-image memorization score. We then re-evaluate existing memorization mitigation techniques. We also show that is capable of evaluating fine-grained pixel-level memorization. Finally, we release a variety of models based on to facilitate further research for understanding memorization phenomena in generative models. All of our code is available atthis https URL.
View on arXiv@article{kriplani2025_2503.00592,
title={ SolidMark: Evaluating Image Memorization in Generative Models },
author={ Nicky Kriplani and Minh Pham and Gowthami Somepalli and Chinmay Hegde and Niv Cohen },
journal={arXiv preprint arXiv:2503.00592},
year={ 2025 }
}