This article presents an overview of image transformation with a secret key and its
applications. Image transformation with a secret key enables us not only to protect visual …

A block scrambling-based encryption scheme is presented to enhance the security of
Encryption-then-Compression (EtC) systems with JPEG compression, which allow us to …

In recent years, image encryption has been broadly researched. Since a large proportion of
images on Internet are compressed, and JPEG is the most widely adopted standards for …

We present a novel privacy-preserving scheme for deep neural networks (DNNs) that
enables us not to only apply images without visual information to DNNs but to also consider …

We present a novel privacy-preserving scheme for deep neural networks (DNNs) that
enables us not to only apply images without visual information to DNNs for both training and …

In this paper, we propose a data gathering algorithm for children's observation system which
enhances anonymity of data and enhances security and has advanced security function to …

The demand for image confidentiality is constantly growing. At the same time, ensuring the
confidentiality of video information must be organized subject to ensuring its reliability with a …

We propose a novel image transformation scheme using generative adversarial networks
(GANs) for privacy-preserving deep neural networks (DNNs). The proposed scheme …

A novel grayscale-based block scrambling image encryption scheme is presented not only
to enhance security, but also to improve the compression performance for Encryption-then …

In many multimedia applications, image encryption has to be conducted prior to image
compression. This letter proposes an Encryption-then-Compression system using JPEG …