一种基于混合注意力机制的图像特征提取方法

By designing an image feature extraction method with a hybrid attention mechanism, and utilizing dynamic clustering and K-means clustering updates, the problem of the lack of global information interaction in the Transformer model is solved, thereby improving the image feature extraction capability and the performance of dense prediction tasks.

CN121073906BActive Publication Date: 2026-07-17HARBIN INST OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2025-08-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The Transformer model based on local attention mechanism lacks explicit global information interaction, resulting in insufficient ability to extract global image features, which limits its application in dense prediction tasks.

Method used

Design an image feature extraction method based on a hybrid attention mechanism. The key value matrix is ​​divided into cluster centers through a dynamic clustering mechanism, local and global attention matrices are constructed, and global information interaction with linear complexity is achieved through a hybrid attention module. Combined with K-means clustering to update the cluster assignment, a hybrid attention output is generated.

Benefits of technology

It improves the performance of the Transformer model in dense prediction tasks, especially significantly improving segmentation accuracy and reducing computational complexity in semantic segmentation tasks.

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Abstract

一种基于混合注意力机制的图像特征提取方法,涉及人工智能及机器视觉领域。本发明旨在解决基于局部注意力机制的Transformer模型缺少显示全局信息交互而导致的图像全局特征提取能力不足的问题,提出了一种基于聚类的稀疏全局注意力机制,并构造了结合局部注意力机制与聚类稀疏全局注意力机制的混合注意力模块。通过使用公开的大型图像分类数据集进行模型预训练;再使用特定语义分割数据集进行模型调优,实现具体的图像分割任务。所述混合注意力模块有效提高基于局部注意力机制的Transformer模型在复杂语义分割场景中的性能表现,对提高Transformer模型在密集预测类任务中的性能表现有重要意义。
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