This paper addresses the problem of exemplar-based texture synthesis. We introduce NIFTY, a hybrid framework that combines recent insights on diffusion models trained with convolutional neural networks, and classical patch-based texture optimization techniques. NIFTY is a non-parametric flow-matching model built on non-local patch matching, which avoids the need for neural network training while alleviating common shortcomings of patch-based methods, such as poor initialization or visual artifacts. Experimental results demonstrate the effectiveness of the proposed approach compared to representative methods from the literature. Code is available at https://github.com/PierrickCh/Nifty.git
@article{arxiv.2509.22318,
title = {NIFTY: a Non-Local Image Flow Matching for Texture Synthesis},
author = {Pierrick Chatillon and Julien Rabin and David Tschumperlé},
journal= {arXiv preprint arXiv:2509.22318},
year = {2025}
}