Local spline approximation on a uniform mesh
USSR Computational Mathematics and Mathematical Physics
Fast B-spline Transforms for Continuous Image Representation and Interpolation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Theory and design of local interpolators
CVGIP: Graphical Models and Image Processing
Modified B-spline interpolators and filters: synthesis and efficient implementation
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 03
IEEE Transactions on Computers
Quantitative Fourier analysis of approximation techniques. I.Interpolators and projectors
IEEE Transactions on Signal Processing
Causal Cubic Splines: Formulations, Interpolation Properties and Implementations
IEEE Transactions on Signal Processing
B-spline signal processing. I. Theory
IEEE Transactions on Signal Processing
MOMS: maximal-order interpolation of minimal support
IEEE Transactions on Image Processing
Efficient implementation of all-digital interpolation
IEEE Transactions on Image Processing
Complete parameterization of piecewise-polynomial interpolation kernels
IEEE Transactions on Image Processing
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The paper studies the continuous time domain properties of causal cubic splines with equidistant knots. Causality is achieved by truncating the impulse response of the ideal interpolator to a chosen length. The introduced error affects the final interpolation differently depending on the considered output filter formulation. For the first formulation it is the regularity that is sacrificed while for the second it is the interpolation and splitting of unit delay properties. The analysis of the casual cardinal splines' spectra also demonstrates different manifestation of the causality induced error that affects either the pass-band region only or both the pass-band and the stop-band region. The frequency kernel is used for objective comparison of the causal and the non-causal interpolators including the causal piecewise cubic MOMS interpolator. Their relative interpolation performance was determined both for wide-band as well as for oversampled narrow-band input signals. The transparent delay is identified for which the causal and the non-causal interpolators achieve identical band-limited reconstruction accuracy.