S. Sangwine

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Fourier transforms of colour images using quaternion or hypercomplex, numbers

S. Sangwine, 1996 .

The Colour Image Processing Handbook

S. Sangwine, R. Horne, 1998, Springer US.

Corner and curve detection along a boundary using line segment triangles

Stephen J. Sangwine, R.E.N. Horne, S. Sangwine, 1993 .

Fundamental Representations and Algebraic Properties of Biquaternions or Complexified Quaternions

Stephen J. Sangwine, Todd A. Ell, Nicolas Le Bihan, 2010, 1001.0240.

Colour object recognition using phase correlation of log-polar transformed fourier spectra

S. Sangwine, A. L. Thornton, 1996 .

Vector phase correlation

S. Sangwine, T. Eli, C. E. Moxey, 2001 .

Quaternion Polar Representation with a Complex Modulus and Complex Argument Inspired by the Cayley-Dickson Form

S. Sangwine, N. L. Bihan, 2008, 0802.0852.

The discrete quaternion Fourier transform

Stephen J. Sangwine, S. Sangwine, 1997 .

Colour image filters based on hypercomplex convolution

Stephen J. Sangwine, Todd A. Ell, S. Sangwine, 2000 .

Clifford Multivector Toolbox (for MATLAB)

Stephen J. Sangwine, Eckhard Hitzer, S. Sangwine, 2017 .

On harmonic analysis of vector‐valued signals

Stephen J. Sangwine, S. Sangwine, 2014, 1404.2492.

Colour in image processing

Stephen J. Sangwine, S. Sangwine, 2000 .

Hypercomplex algebras in digital signal processing: Benefits and drawbacks

Heinz G. Göckler, Stephen J. Sangwine, Todd A. Ell, 2007, 2007 15th European Signal Processing Conference.

Perspectives on color image processing by linear vector methods using projective geometric transformations

S. Sangwine, 2013 .

Canonic form of linear quaternion functions

S. Sangwine, 2008, 0801.2887.

Signal and Image Processing

S. Sangwine, N. L. Bihan, T. Ell, 2014 .

Polar Decomposition of Complexified Quaternions and Octonions

S. Sangwine, E. Hitzer, 2020, Advances in Applied Clifford Algebras.

Quaternionic Spectral Analysis of Non-Stationary Improper Complex Signals

S. Sangwine, N. L. Bihan, 2013 .

Diagnosis of multiple faults in combinational digital circuits by modelling of transition propagation along critical paths

S. Sangwine, 1992 .

Quaternion singular value decomposition based on bidiagonalization to a real or complex matrix using quaternion Householder transformations

S. Sangwine, N. L. Bihan, 2006, Appl. Math. Comput..

The Colour Image Processing Handbook (Optoelectronics, Imaging and Sensing)

Stephen J. Sangwine, Robin E. N. Horne, S. Sangwine, 1998 .

Polar Decomposition of Complexified Quaternions and Octonions

S. Sangwine, E. Hitzer, 2020, Advances in Applied Clifford Algebras.

Biquaternion (Complexified Quaternion) Roots of −1

S. Sangwine, 2005, math/0506190.

Hypercomplex Fourier transforms of color images

S. Sangwine, T. Ell, S.J. Sangwine, 2001, Proceedings 2001 International Conference on Image Processing (Cat. No.01CH37205).

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

Nicolas Le Bihan, Stephen J. Sangwine, Todd A. Ell, 2012, Signal Process..

Quaternion involutions and anti-involutions

Stephen J. Sangwine, Todd A. Ell, S. Sangwine, 2005, Comput. Math. Appl..

Quaternion Fourier Transforms for Signal and Image Processing

Stephen J. Sangwine, Todd A. Ell, Nicolas Le Bihan, 2014 .

Quaternion and Clifford Fourier Transforms and Wavelets

Stephen J. Sangwine, Eckhard Hitzer, S. Sangwine, 2013 .

History of quaternion and Clifford Fourier transforms and wavelets

Fred Brackx, Stephen J. Sangwine, Eckhard Hitzer, 2012 .

Hypercomplex Fourier Transforms of Color Images

Stephen J. Sangwine, Todd A. Ell, S. Sangwine, 2001, IEEE Transactions on Image Processing.

Hypercomplex correlation techniques for vector images

C. Eddie Moxey, Stephen J. Sangwine, Todd A. Ell, 2003, IEEE Trans. Signal Process..

A ] 1 0 M ar 2 00 6 Quaternion Singular Value Decomposition based on Bidiagonalization to a Real Matrix using Quaternion Householder Transformations

S. J. Sangwine, N. Le Bihan, S. Sangwine, 2006 .

Hypercomplex color-sensitive smoothing filters

Stephen J. Sangwine, Todd A. Ell, Carolyn J. Evans, 2000, Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101).

Fast Complexified Quaternion Fourier Transform

Nicolas Le Bihan, Stephen J. Sangwine, Salem Said, 2006, IEEE Transactions on Signal Processing.

The development of the quaternion wavelet transform

Stephen J. Sangwine, Peter Fletcher, S. Sangwine, 2017, Signal Process..

Foundations of Conic Conformal Geometric Algebra and Compact Versors for Rotation, Translation and Scaling

Stephen J. Sangwine, Eckhard Hitzer, S. Sangwine, 2019, Advances in Applied Clifford Algebras.

Multivector and multivector matrix inverses in real Clifford algebras

Stephen J. Sangwine, Eckhard Hitzer, S. Sangwine, 2017, Appl. Math. Comput..

Construction of Multivector Inverse for Clifford Algebras Over $$2m+1$$2m+1-Dimensional Vector Spaces from Multivector Inverse for Clifford Algebras Over 2m-Dimensional Vector Spaces

S. Sangwine, E. Hitzer, 2019, Advances in Applied Clifford Algebras.

Jacobi method for quaternion matrix singular value decomposition

Nicolas Le Bihan, Stephen J. Sangwine, S. Sangwine, 2007, Appl. Math. Comput..

Deductive fault diagnosis in digital circuits: a survey

Stephen J. Sangwine, S. Sangwine, 1989 .

Fault diagnosis in combinational digital circuits using a backtrack algorithm to generate fault location hypotheses

Stephen J. Sangwine, S. Sangwine, 1988 .

Quaternion principal component analysis of color images

Nicolas Le Bihan, Stephen J. Sangwine, S. Sangwine, 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).

The present state and the future of colour image processing

S. J. Sangwine, R. E. N. Horne, S. Sangwine, 1998 .

The Orthogonal 2D Planes Split of Quaternions and Steerable Quaternion Fourier Transformations pdf

Stephen J. Sangwine, Eckhard Hitzer, S. Sangwine, 2013, ArXiv.

Exact Principal Geodesic Analysis for data on SO(3)

Nicolas Courty, Nicolas Le Bihan, Stephen J. Sangwine, 2007, 2007 15th European Signal Processing Conference.

Colour image edge detector based on quaternion convolution

Stephen J. Sangwine, S. Sangwine, 1998 .

Multicore Technology: Architecture, Reconfiguration, and Modeling

Stephen J. Sangwine, Muhammad Yasir Qadri, S. Sangwine, 2013 .

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

Stephen J. Sangwine, Todd A. Ell, S. Sangwine, 2010, Appl. Math. Comput..

A colour histogram clustering technique for tissue analysis of healing skin wounds

Stephen J. Sangwine, W. P. Berriss, S. Sangwine, 1997 .

Clifford Multivector Toolbox (for MATLAB)

S. Sangwine, E. Hitzer, 2016, Advances in Applied Clifford Algebras.

Connecting spatial and frequency domains for the quaternion Fourier transform

Stephen J. Sangwine, Todd A. Ell, Nele De Schepper, 2015, Appl. Math. Comput..

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

Stephen J. Sangwine, Todd A. Ell, S. Sangwine, 2000, 2000 10th European Signal Processing Conference.

Interconnection technology

S. Sangwine, 2018, Electronic Components and Technology.