This paper presents a novel iris coding method based on differences of discrete cosine
transform (DCT) coefficients of overlapped angular patches from normalized iris images. The …

In this paper, a robust watermarking technique is proposed using integer discrete cosine
transform, non-linear chaotic map and dynamic stochastic resonance (DSR). Firstly, the host …

Many new DCT-like transforms have been proposed since the first edition of this book. For
example, the integer DCT that yields integer transform coefficients, the directional DCT to …

Transform coding plays a very important role in image and video compression. Discrete
Cosine Transform (DCT) is used as standard scheme (ie JPEG) in lossy image compression …

Transforms are an important part of an engineer's toolkit for solving signal processing and
polynomial computation problems. In contrast to the Fourier transform-based approaches …

Currently most energy-constrained wireless sensor networks are designed with the object of
minimizing the communication power at the cost of more computation. To achieve high …

Signal processing in the encrypted domain (sped) appears an elegant solution in
application scenarios, where valuable signals must be protected from a possibly malicious …

Since homomorphic encryption operations have high computational complexity, image
applications based on homomorphic encryption are often time consuming, which makes …

This paper aims to explore an alternative reversible digital watermarking solution to
guarantee the integrity of and detect tampering with data of probative importance. Since the …

Based on the authors' research in Fourier analysis, Brief Notes in Advanced DSP: Fourier
Analysis with MATLAB® addresses many concepts and applications of digital signal …