Items where Author is "Ell, Todd A"

Ell, Todd A and Bihan, Nicolas Le and Sangwine, Stephen J (2014) Quaternion Fourier Transforms for Signal and Image Processing. Wiley, pp. 1-136. ISBN 9781848214781.

Le Bihan, Nicolas and Sangwine, Stephen J and Ell, Todd A (2014) Instantaneous frequency and amplitude of orthocomplex modulated signals based on quaternion Fourier transform. Signal Processing, 94 (1). pp. 308-318. DOI https://doi.org/10.1016/j.sigpro.2013.06.028

Sangwine, Stephen J and Ell, Todd A (2012) Complex and hypercomplex discrete Fourier transforms based on matrix exponential form of Euler’s formula. Applied Mathematics and Computation, 219 (2). pp. 644-655. DOI https://doi.org/10.1016/j.amc.2012.06.055

Sangwine, Stephen J and Ell, Todd A and Le Bihan, Nicolas (2011) Fundamental Representations and Algebraic Properties of Biquaternions or Complexified Quaternions. Advances in Applied Clifford Algebras, 21 (3). pp. 607-636. DOI https://doi.org/10.1007/s00006-010-0263-3

Ell, Todd A and Sangwine, Stephen J (2007) Quaternion involutions and anti-involutions. Computers & Mathematics with Applications, 53 (1). pp. 137-143. DOI https://doi.org/10.1016/j.camwa.2006.10.029