Volume 13 (2021)
Volume 12 (2020)
Volume 11 (2019)
Volume 10 (2018)
Volume 9 (2017)
Volume 8 (2016)
Volume 7 (2015)
Volume 6 (2014)
Volume 5 (2013)
Volume 4 (2012)
Volume 3 (2011)
Volume 2 (2010)
Volume 1 (2009)
1. Optimum decoder for multiplicative spread spectrum image watermarking with Laplacian modeling

N. Zarmehi; M. R. Aref

Volume 8, Issue 2 , Summer and Autumn 2016, , Pages 131-139

http://dx.doi.org/10.22042/isecure.2016.8.2.4

Abstract
  This paper investigates the multiplicative spread spectrum watermarking method for the image. The information bit is spreaded into middle-frequency Discrete Cosine Transform (DCT) coefficients of each block of an image using a generated pseudo-random sequence. Unlike the conventional signal modeling, ...  Read More

2. Robust multiplicative video watermarking using statistical modeling

A. Diyanat; M. A. Akhaee; Sh. Ghaemmaghami

Volume 5, Issue 1 , Winter and Spring 2013, , Pages 83-95

http://dx.doi.org/10.22042/isecure.2013.5.1.6

Abstract
  The present paper is intended to present a robust multiplicative video watermarking scheme. In this regard, the video signal is segmented into 3-D blocks like cubes, and then, the 3-D wavelet transform is applied to each block. The low frequency components of the wavelet coefficients are then used for ...  Read More