Paper Detail
Yuchen Xian, Yunqiu Xu, Yang He, Yi Yang
Multimodal image fusion aims to integrate complementary information from different modalities into a fused image that preserves rich local details while maintaining globally consistent appearance. Existing approaches build shared representations on 2D feature grids, which excel at modeling local structures but offer limited leverage over image-level global appearance factors. To balance these objectives, we introduce a compact 1D token interface based on a frozen pretrained image tokenizer for modeling non-local appearance/base factors. Rather than using the tokenizer as a reconstruction backbone, our design uses the 1D token space as a global carrier while retaining the 2D spatial pathway for local structure restoration. Specifically, we introduce Selective Token Editing (STE), which sparsely updates/replaces a small set of critical tokens, providing a lightweight mechanism to steer global appearance coherence while keeping the fusion backbone unchanged and avoiding extra losses. Experiments on four commonly used benchmarks show that our method achieves the best overall performance, with consistent, multi-metric improvements in both global coherence and local fidelity. Project page: https://zju-xyc.github.io/1D-Fusion-Project-Page/
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@misc{xian20262d,
title = {From 2D Grids to 1D Tokens: Reforming Shared Representations for Multimodal Image Fusion},
author = {Yuchen Xian and Yunqiu Xu and Yang He and Yi Yang},
year = {2026},
abstract = {Multimodal image fusion aims to integrate complementary information from different modalities into a fused image that preserves rich local details while maintaining globally consistent appearance. Existing approaches build shared representations on 2D feature grids, which excel at modeling local structures but offer limited leverage over image-level global appearance factors. To balance these objectives, we introduce a compact 1D token interface based on a frozen pretrained image tokenizer for m},
url = {https://huggingface.co/papers/2606.12303},
keywords = {multimodal image fusion, 2D feature grids, 1D token interface, pretrained image tokenizer, selective token editing, global appearance coherence, local structure restoration, huggingface daily},
eprint = {2606.12303},
archiveprefix = {arXiv},
}
{}