Todd A. Ell

According to our database, Todd A. Ell authored at least 24 papers between 1999 and 2015.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2015

Connecting spatial and frequency domains for the quaternion Fourier transform.

Hendrik De Bie, Nele De Schepper, Todd A. Ell, K. Rubrecht, Stephen J. Sangwine

Appl. Math. Comput., 2015

2014

Instantaneous frequency and amplitude of orthocomplex modulated signals based on quaternion Fourier transform.

Nicolas Le Bihan, Stephen J. Sangwine, Todd A. Ell

Signal Process., 2014

2012

Complex and hypercomplex discrete Fourier transforms based on matrix exponential form of Euler's formula.

Stephen J. Sangwine, Todd A. Ell

Appl. Math. Comput., 2012

2008

Theory of vector filters based on linear quaternion functions.

Todd A. Ell, Stephen J. Sangwine

Proceedings of the 2008 16th European Signal Processing Conference, 2008

Projective-space colour filters using quaternion algebra.

Todd A. Ell, Stephen J. Sangwine

Proceedings of the 2008 16th European Signal Processing Conference, 2008

2007

Hypercomplex Fourier Transforms of Color Images.

Todd A. Ell, Stephen J. Sangwine

IEEE Trans. Image Process., 2007

Quaternion involutions and anti-involutions.

Todd A. Ell, Stephen J. Sangwine

Comput. Math. Appl., 2007

Hypercomplex Color Affine Filters.

Todd A. Ell

Proceedings of the International Conference on Image Processing, 2007

Multi-Vector Color-Image Filters.

Todd A. Ell

Proceedings of the International Conference on Image Processing, 2007

Hypercomplex algebras in digital signal processing: Benefits and drawbacks.

Daniel J. Alfsmann, Heinz G. Göckler, Stephen J. Sangwine, Todd A. Ell

Proceedings of the 15th European Signal Processing Conference, 2007

2004

Colour-dependent linear vector image filtering.

Stephen J. Sangwine, Todd A. Ell, Barnabas N. Gatsheni

Proceedings of the 2004 12th European Signal Processing Conference, 2004

Gray-centered RGB color space.

Stephen J. Sangwine, Todd A. Ell

Proceedings of the Second European Conference on Colour in Graphics, Imaging, and Vision, 2004

2003

Hypercomplex correlation techniques for vector images.

C. Eddie Moxey, Stephen J. Sangwine, Todd A. Ell

IEEE Trans. Signal Process., 2003

Vector amplification for color-dependent image filtering.

Stephen J. Sangwine, Barnabas N. Gatsheni, Todd A. Ell

Proceedings of the 2003 International Conference on Image Processing, 2003

2002

Color-grayscale image registration using hypercomplex phase correlation.

C. Eddie Moxey, Stephen J. Sangwine, Todd A. Ell

Proceedings of the 2002 International Conference on Image Processing, 2002

Vector zone plates as test patterns for linear vector filters.

Todd A. Ell, Stephen J. Sangwine

Proceedings of the 2002 International Conference on Image Processing, 2002

Linear colour-dependent image filtering based on vector decomposition.

Stephen J. Sangwine, Barnabas N. Gatsheni, Todd A. Ell

Proceedings of the 11th European Signal Processing Conference, 2002

Hypercomplex operators and vector correlation.

C. Eddie Moxey, Todd A. Ell, Stephen J. Sangwine

Proceedings of the 11th European Signal Processing Conference, 2002

Vector Correlation of Color Images.

C. Eddie Moxey, Todd A. Ell, Stephen J. Sangwine

Proceedings of the First European Conference on Colour in Graphics, Imaging, and Vision, 2002

2000

Hypercomplex Color-Sensitive Smoothing Filters.

Carolyn J. Evans, Stephen J. Sangwine, Todd A. Ell

Proceedings of the 2000 International Conference on Image Processing, 2000

Hypercomplex Wiener-Khintchine Theorem with Application to Color Image Correlation.

Todd A. Ell, Stephen J. Sangwine

Proceedings of the 2000 International Conference on Image Processing, 2000

Colour-sensitive edge detection using hypercomplex filters.

Carolyn J. Evans, Stephen J. Sangwine, Todd A. Ell

Proceedings of the 10th European Signal Processing Conference, 2000

Decomposition of 2D Hypercomplex Fourier transforms into pairs of complex fourier transforms.

Todd A. Ell, Stephen J. Sangwine

Proceedings of the 10th European Signal Processing Conference, 2000

1999

Hypercomplex Auto-And-Cross-Correlation of Color Images.

Stephen J. Sangwine, Todd A. Ell

Proceedings of the 1999 International Conference on Image Processing, 1999