3 papers
cs.CV2021
Image content dependent semi-fragile watermarking with localized tamper detection
Samira Hosseini, Mojtaba Mahdavi
Content-independent watermarks and block-wise independency can be considered as vulnerabilities in semi-fragile watermarking methods. In this paper to achieve the objectives of sem…
cs.CR2021
Blockchain for steganography: advantages, new algorithms and open challenges
Omid Torki, Maede Ashouri-Talouki, Mojtaba Mahdavi
Steganography is a solution for covert communication and blockchain is a p2p network for data transmission, so the benefits of blockchain can be used in steganography. In this pape…
eess.IV2020
Full Quaternion Representation of Color images: A Case Study on QSVD-based Color Image Compression
Alireza Parchami, Mojtaba Mahdavi
For many years, channels of a color image have been processed individually, or the image has been converted to grayscale one with respect to color image processing. Pure quaternion…