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Enhancing vehicle Re-identification by pair-flexible pose guided vehicle image synthesis
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作者 Baolu Li Ping Liu +4 位作者 Lan Fu Jinlong Li Jianwu Fang Zhigang Xu hongkai yu 《Green Energy and Intelligent Transportation》 2025年第5期15-25,共11页
Vehicle Re-identification(Re-ID)has drawn extensive exploration recently;nevertheless,the issue of accurately distinguishing features in latent space across varying vehicle poses,remains a challenging hurdle for real-... Vehicle Re-identification(Re-ID)has drawn extensive exploration recently;nevertheless,the issue of accurately distinguishing features in latent space across varying vehicle poses,remains a challenging hurdle for real-world application of Vehicle Re-ID.To address this challenge,we supply a novel idea which projects the various-pose vehicle images into a unified target pose so as to promote the discriminative capability of vehicle Re-ID model.Acknowledging the labor and cost of paired data for the same vehicle images across different traffic surveillance cameras in practical scenarios,we propose the pioneering Pair-flexible Pose Guided Image Synthesis for vehicle Re-ID,denominated as VehicleGAN.Our method is adept at both supervised(paired images of same vehicle)and unsupervised(unpaired images of any vehicle)settings,and bypasses the need of geometric 3D model information.Furthermore,we propose a novel Joint Metric Learning(JML)method to facilitate the effective fusion of both real and synthetic data.Comprehensive experimental analyses conducted on the public VeRi-776 and VehicleID datasets substantiate the precision and efficacy of our proposed VehicleGAN and JML. 展开更多
关键词 Vehicle Re-identification Metric learning Image synthesis
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基于雾扰动的图像分类对抗性攻击方法 被引量:3
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作者 高瑞均 郭青 +1 位作者 余洪凯 冯伟 《中国科学:信息科学》 CSCD 北大核心 2023年第2期309-324,共16页
对抗性攻击是研究深度神经网络脆弱性的前沿技术.然而现有工作大多关注基于加性噪声扰动的攻击,无法代表现实世界中的扰动因素,阻碍了对抗性攻击的实际应用.雾作为现实世界中广泛存在的自然现象,对图像造成显著影响,不可避免地对深度模... 对抗性攻击是研究深度神经网络脆弱性的前沿技术.然而现有工作大多关注基于加性噪声扰动的攻击,无法代表现实世界中的扰动因素,阻碍了对抗性攻击的实际应用.雾作为现实世界中广泛存在的自然现象,对图像造成显著影响,不可避免地对深度模型构成潜在威胁.本文首次尝试从对抗性攻击的角度研究雾对深度神经网络的影响,并提出两种基于雾扰动的对抗性攻击方法:基于优化的雾扰动对抗性攻击OAdvHaze,在深度神经网络的指引下优化大气散射模型参数,以合成有雾图像,该方法具有较高的攻击成功率.预测式雾扰动对抗性攻击PAdvHaze,采用深度神经网络直接预测雾合成参数,提高了对抗性攻击的速度.本文在ILSVRC 2012和NIPS 2017两个公开数据集上验证了所提出方法的有效性,OAdvHaze和PAdvHaze取得了与最先进攻击方法相当的攻击成功率和可迁移性.该工作将有助于评估和提高深度神经网络对现实世界中潜在雾扰动的鲁棒性. 展开更多
关键词 对抗性攻击 图像分类 雾合成 深度学习 图像处理
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