2022
DOI: 10.48550/arxiv.2202.00382
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A Privacy-Preserving Image Retrieval Scheme with a Mixture of Plain and EtC Images

Abstract: In this paper, we propose a novel content-based image-retrieval scheme that allows us to use a mixture of plain images and compressible encrypted ones called "encryption-thencompression (EtC) images." In the proposed scheme, extended SIMPLE descriptors are extracted from EtC images as well as from plain ones, so the mixed use of plain and encrypted images is available for image retrieval. In an experiment, the proposed scheme was demonstrated to have almost the same retrieval performance as that for plain imag… Show more

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