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 …

Compression and encryption are often performed together for image sharing and/or storage.
The order in which the two operations are carried out affects the overall efficiency of digital …

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 …

Solving puzzle problems using computer-aided methods is becoming more common with
applications in forensic science, restoration, banking system, and multimedia. However, only …

For joint image compression and encryption schemes, the encryption power and
compression efficiency are commonly two contradictory things. In this paper, we propose a …

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 this paper, we propose a privacy-preserving semantic segmentation method that uses
encrypted images and models with the vision transformer (ViT), called the segmentation …

An encryption scheme of JPEG images in the bitstream domain is proposed. The proposed
scheme preserves the JPEG format even after encrypting the images, and the file size of …