A skew angle estimation approach based on the application of several time±frequency distributions of Cohen's class to the horizontal projection pro®le of the page is proposed for document processing. Our results prove that the Wigner± Ville is the best trade-o€ between accuracy and computational cost. Ó 1999 Elsevier Science B.V. All rights reserved.

Abstract We propose a single channel blind source separation algorithm for convolutively mixed linear frequency modulation (LFM) signals based on smoothed Wigner-Ville distribution (SWVD) time-frequency analysis, Canny edge detection, and Hough transform detection. First, the SWVD analysis diagram is obtained as an image LFM characteristics. Second, detection performed image. Then, used to dete...

A skew angle estimation approach based on the application of several time-frequency distributions of Cohen's class to the horizontal projection profile of the page is proposed for document processing. Our results prove that the Wigner-Ville is the best trade-off between accuracy and computational cost. Skew estimation Cohen distributions Document page Projection profile

This study presents a comprehensive investigation of ferroresonance, dangerous electrical phenomenon that poses significant financial risks. Using real transmission line parameters, we simulated synthetic ferroresonance scenarios on model and analyzed the resulting data using high-order spectral analysis methods, including Wigner-Ville method, Welch frequency-power analysis, methods. Our reveal...

a new derivation of the quantum boltzmann transport equation for the fermion system from the quantum time evolution equation for the wigner distribution function is presented. the method exhibits the origin of the time - irreversibility of the boltzmann equation. in the present work, the spin dependent and indistinguishibility of particles are also considered.