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-then-compression (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 images, even with a mixture of plain and encrypted images.
翻译:在本文中,我们提出了一个基于内容的图像检索新方案,让我们可以使用一个简单图像和压缩加密图像的混合组合,称为“催化-当下压缩(EtC)图像 ” 。 在拟议方案中,从 EtC 图像和普通图像中提取了扩展的 SIMPLE 描述器,这样可以混合使用普通和加密图像进行图像检索。 在一项实验中,所拟议的方案被证明具有与普通图像几乎相同的检索性能,即使有普通和加密图像的混合。