Cross-modal pedestrian re-identification method based on dynamic redundancy suppression

CN119919962BActive Publication Date: 2026-08-28CHANGSHU INSTITUTE OF TECHNOLOGY
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Patent Information

Application Number
CN202411816586.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2026-08-28
Estimated Expiration
2044-12-11

AI Technical Summary

Technical Problem

[0005]针对上述现有技术的缺陷,本发明提供了一种基于动态冗余抑制的跨模态行人重识别方法,充分利用模态特定特征构造出更加合理的共享特征空间,同时加强不同层次间的信息交互,消除冗余信息的影响,有效弥合模态内以及模态间的差异,充分挖掘行人的身份信息,解决以往方法难以处理复杂场景的问题

Benefits of technology

[0032]本发明中动态冗余抑制跨模态模型利用两个独立的卷积处理提取可见光图像和红外图像的低级特征;接着,两个内模态特征学习器与一个跨模态特征学习器相结合,强化模态特定特征的同时,动态调整不同模态特定特征信息比例,生成有效的辅助模态特征;然后通过构建动态冗余抑制模块,将动态冗余抑制模块嵌入到骨干网络中,进一步消除辅助模态冗余信息的影响,将三种模态特征输入到具有权重共享的特征编码器中进行特征提取和融合。在模型优化过程中,根据行人身份特征和模态特征计算身份损失及三模态身份中心损失并根据损失函数优化。通过采用本发明,有效缓解了可见光红外模态内外差异,实现了行人身份特征的充分挖掘。

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Abstract

The application discloses a cross-modal pedestrian re-identification method based on dynamic redundancy suppression, comprising the following steps: preprocessing visible light pedestrian images and infrared pedestrian images of a search target and a matching database; inputting the images into an optimized dynamic redundancy suppression cross-modal model to obtain identification features; obtaining an identification matching result according to the similarity of the identification features of the search target and the matching database; the dynamic redundancy suppression cross-modal model firstly performs convolution processing on the input images to obtain visible light features and infrared features, calculates channel attention information and fuses the features through two intra-modal feature learners and one cross-modal feature learner to obtain auxiliary modal features; and then the features are respectively input into weight-shared feature encoders, global average pooling and batch normalization are performed to obtain the identification features. The application effectively alleviates the intra- and inter-differences between visible light and infrared modalities, and fully mines the identity features of pedestrians.
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