A wavelet-based Frequency Response Function (FRF) is proposed for vibration analysis of
systems with time-varying parameters. The classical FRF is extended to a representation in …

The need for an automatic lip-reading system is ever increasing. Infact, today, extraction and
reliable analysis of facial movements make up an important part in many multimedia …

In this thesis, we generalize the classical discrete wavelet transform, and construct wavelet
transforms that are shift-invariant, time-varying, undecimated, and signal dependent. The …

We study the application of the continuous wavelet transform to perform signal filtering
processes. We first show that the convolution and correlation of two wavelet functions satisfy …

Short-term changes in atmospheric transmissivity caused by clouds can engender more
severe fluctuations in photovoltaic (PV) outputs than those from traditional power plants. As …

Convolution is one of the most widely used digital signal processing operations. It can be
implemented using the fast Fourier transform (FFT) with a computational complexity of O (N …

Grey-scale multiresolution cross-correlation, combined with Canny edge detection
algorithms, has been proposed and investigated for relatively simple and efficient coin …

In recent years, there has been growing interest in mapping visual features into compact
binary codes for applications on large-scale image search. Encoding high-dimensional data …

Gabor proposed the concept of analytic signal, ie, a complex signal related to a given real
signal using the Hilbert transform. In this paper, we generalize the approach of constructing …