In this paper, a double image encryption scheme using 3D Lorenz chaotic system and QR
decomposition in 2D non-separable linear canonical transform domain is proposed. Here …

In this paper, we propose a new asymmetric method for double image encryption using the
two-dimensional non-separable linear canonical transform (2D NS-LCT) and an iterative …

In this paper, we generalize the windowed Fourier transform to the windowed linear
canonical transform by substituting the Fourier transform kernel with the linear canonical …

The linear canonical transform (LCT), which generalizes many classical transforms, has
been shown to be a powerful tool for signal processing and optics. Sampling theory of the …

Two-dimensional non-separable linear canonical transform (2D NSLCT), as a generalized
form of linear canonical transform (LCT) and 2D separable linear canonical transform (2D …

With the wide application of spectral and algebraic theory in discrete signal processing
techniques in the field of graph signal processing, an increasing number of signal …

The general astigmatic transform, or two-dimensional non-separable linear canonical
transform of a Hermite–Laguerre–Gaussian beam, is investigated by theoretical means …

Linear canonical transforms (LCTs) are of importance in many areas of science and
engineering with many applications. Therefore, a satisfactory discrete implementation is of …

The simulations indicate that the existing hard thresholding technique independent of the
residual function may cause a dramatic increase or numerical oscillation of the residual. This …

The fractional Fourier transform, which is a generalization of the Fourier transform, has
become the focus of many research papers in recent years because of its applications in …