Iwin Transformer: Hierarchical Vision Transformer using Interleaved Windows

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Hauptverfasser: Huo, Simin, Li, Ning
Format: Preprint
Veröffentlicht: 2025
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author Huo, Simin
Li, Ning
author_facet Huo, Simin
Li, Ning
contents We introduce Iwin Transformer, a novel position-embedding-free hierarchical vision transformer, which can be fine-tuned directly from low to high resolution, through the collaboration of innovative interleaved window attention and depthwise separable convolution. This approach uses attention to connect distant tokens and applies convolution to link neighboring tokens, enabling global information exchange within a single module, overcoming Swin Transformer's limitation of requiring two consecutive blocks to approximate global attention. Extensive experiments on visual benchmarks demonstrate that Iwin Transformer exhibits strong competitiveness in tasks such as image classification (87.4 top-1 accuracy on ImageNet-1K), semantic segmentation and video action recognition. We also validate the effectiveness of the core component in Iwin as a standalone module that can seamlessly replace the self-attention module in class-conditional image generation. The concepts and methods introduced by the Iwin Transformer have the potential to inspire future research, like Iwin 3D Attention in video generation. The code and models are available at https://github.com/cominder/Iwin-Transformer.
format Preprint
id arxiv_https___arxiv_org_abs_2507_18405
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Iwin Transformer: Hierarchical Vision Transformer using Interleaved Windows
Huo, Simin
Li, Ning
Computer Vision and Pattern Recognition
Machine Learning
We introduce Iwin Transformer, a novel position-embedding-free hierarchical vision transformer, which can be fine-tuned directly from low to high resolution, through the collaboration of innovative interleaved window attention and depthwise separable convolution. This approach uses attention to connect distant tokens and applies convolution to link neighboring tokens, enabling global information exchange within a single module, overcoming Swin Transformer's limitation of requiring two consecutive blocks to approximate global attention. Extensive experiments on visual benchmarks demonstrate that Iwin Transformer exhibits strong competitiveness in tasks such as image classification (87.4 top-1 accuracy on ImageNet-1K), semantic segmentation and video action recognition. We also validate the effectiveness of the core component in Iwin as a standalone module that can seamlessly replace the self-attention module in class-conditional image generation. The concepts and methods introduced by the Iwin Transformer have the potential to inspire future research, like Iwin 3D Attention in video generation. The code and models are available at https://github.com/cominder/Iwin-Transformer.
title Iwin Transformer: Hierarchical Vision Transformer using Interleaved Windows
topic Computer Vision and Pattern Recognition
Machine Learning
url https://arxiv.org/abs/2507.18405