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Privacy Protection in Interactive Content Based Image Retrieval

机译:基于交互式内容的图像检索的隐私保护

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摘要

Privacy protection in Content Based Image Retrieval (CBIR) is a new research topic in cyber security and privacy. The state-of-art CBIR systems usually adopt interactive mechanism, namely relevance feedback, to enhance the retrieval precision. How to protect the user's privacy in such Relevance Feedback based CBIR (RF-CBIR) is a challenge problem. In this paper, we investigate this problem and propose a new Private Relevance Feedback CBIR (PRF-CBIR) scheme. PRF-CBIR can leverage the performance gain of relevance feedback and preserve the user's search intention at the same time. The new PRF-CBIR consists of three stages: 1) private query; 2) private feedback; 3) local retrieval. Private query performs the initial query with a privacy controllable feature vector; private feedback constructs the feedback image set by introducing confusing classes following the K-anonymity principle; local retrieval finally re-ranks the images in the user side. Privacy analysis shows that PRF-CBIR fulfills the privacy requirements. The experiments carried out on the real-world image collection confirm the effectiveness of the proposed PRF-CBIR scheme.
机译:基于内容的图像检索(CBIR)的隐私保护是网络安全和隐私的新研究主题。最先进的CBIR系统通常采用互动机制,即相关反馈,以提高检索精度。如何保护用户在基于相关反馈的CBIR(RF-CBIR)中的隐私是一个挑战问题。在本文中,我们调查了这个问题,并提出了一种新的私有相关反馈CBIR(PRF-CBIR)方案。 PRF-CBIR可以利用相关性反馈的性能增益,并同时保留用户的搜索意图。新的prf-cbir由三个阶段组成:1)私人查询; 2)私人反馈; 3)局部检索。私有查询使用隐私可控特征向量执行初始查询;私人反馈通过介绍k-匿名原则之后引入令人困惑的类来构造反馈映像;本地检索最终在用户端重新排列图像。隐私分析表明,PRF-CBIR履行了隐私要求。在实际图像收集上进行的实验证实了所提出的PRF-CBIR方案的有效性。

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