The first algorithm, called Oneta, for a novel task of multi-style image enhancement is proposed in this work. Oneta uses two point operators sequentially: intensity enhancement with a transformation function (TF) and color correction with a color correction matrix (CCM). This two-step enhancement model, though simple, achieves a high performance upper bound. Also, we introduce eigentransformation function (eigenTF) to represent TF compactly. The Oneta network comprises Y-Net and C-Net to predict eigenTF and CCM parameters, respectively. To support K styles, Oneta employs K learnable tokens. During training, each style token is learned using image pairs from the corresponding dataset. In testing, Oneta selects one of the K style tokens to enhance an image accordingly. Extensive experiments show that the single Oneta network can effectively undertake six enhancement tasks -- retouching, image signal processing, low-light image enhancement, dehazing, underwater image enhancement, and white balancing -- across 30 datasets.
@article{arxiv.2506.23547,
title = {Oneta: Multi-Style Image Enhancement Using Eigentransformation Functions},
author = {Jiwon Kim and Soohyun Hwang and Dong-O Kim and Changsu Han and Min Kyu Park and Chang-Su Kim},
journal= {arXiv preprint arXiv:2506.23547},
year = {2025}
}