Vision Transformer with Sparse Scan Prior

• URL: http://arxiv.org/abs/2405.13335v2
• Date: Wed, 10 Sep 2025 04:25:09 GMT
• Title: Vision Transformer with Sparse Scan Prior
• Authors: Yuguang Zhang, Qihang Fan, Huaibo Huang,
• Abstract summary: We propose a textbfSparse textbfScan textbfSelf-textbfAttention mechanism ($rmS3rmA$)<n>This mechanism predefines a series of Anchors of Interest for each token and employs local attention to efficiently model the spatial information around these anchors.<n>Building on $rmS3rmA$, we introduce the textbfSparse textbfScan textbfVision
• Score: 24.78780746169092
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In recent years, Transformers have achieved remarkable progress in computer vision tasks. However, their global modeling often comes with substantial computational overhead, in stark contrast to the human eye's efficient information processing. Inspired by the human eye's sparse scanning mechanism, we propose a \textbf{S}parse \textbf{S}can \textbf{S}elf-\textbf{A}ttention mechanism ($\rm{S}^3\rm{A}$). This mechanism predefines a series of Anchors of Interest for each token and employs local attention to efficiently model the spatial information around these anchors, avoiding redundant global modeling and excessive focus on local information. This approach mirrors the human eye's functionality and significantly reduces the computational load of vision models. Building on $\rm{S}^3\rm{A}$, we introduce the \textbf{S}parse \textbf{S}can \textbf{Vi}sion \textbf{T}ransformer (SSViT). Extensive experiments demonstrate the outstanding performance of SSViT across a variety of tasks. Specifically, on ImageNet classification, without additional supervision or training data, SSViT achieves top-1 accuracies of \textbf{84.4\%/85.7\%} with \textbf{4.4G/18.2G} FLOPs. SSViT also excels in downstream tasks such as object detection, instance segmentation, and semantic segmentation. Its robustness is further validated across diverse datasets.

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