The perceptual hash algorithm is a technique to authenticate the integrity of images. While a few scholars have worked on mono-spectral image perceptual hashing, there is limited research on multispectral image perceptual hashing. In this paper, we propose a perceptual hash algorithm for the content authentication of a multispectral remote sensing image based on the synthetic characteristics of...

Feature extraction is an important part of perceptual hashing. How to compress the robust features images into hash codes has become a hot research topic. Converting two-dimensional image one-dimensional descriptor requires higher computational cost and not optimal. In order maintain internal feature structure original image, new Bilinear Supervised Neighborhood Discrete Discriminant Hashing (B...

Medical information digitization makes the medical information storage and extraction more convenient. Medical image information security and copyright protection is also gradually being taken seriously, and some medical image watermarking has been applied. According to the characteristics of three-dimensional medical images, this paper proposes a robust zero-watermarking algorithm for medical ...