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Fractional Splines Wavelets
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bullet Fractional B-splines
Fractional Splines Equation
The animation shows the fractional B-splines with an α that runs from 0 to 5.
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QuickTime or MPEG
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Note that these are valid scaling functions for all α >-1/2.
 
bullet Symmetrized fractional B-splines
Symmetrized Fractional B-Splines Equation
The animation shows the symmetrized fractional B-splines with an α that runs from 0 to 5.
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QuickTime or MPEG
Reference:
M. Unser, T. Blu, "Fractional Splines and Wavelets," SIAM Review, vol. 42, no. 1, pp. 43-67, March 2000.
 
bullet Fractional B-spline wavelets
Fractional B-spline wavelets Equation
The animation shows the fractional B-spline wavelets with an α that runs from 0 to 5.
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QuickTime or MPEG
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QuickTime or MPEG
Note that every single wavelet on this graph generates a stable wavelet basis of L2 (the space of finite energy functions).
References:
M. Unser, T. Blu, "Fractional Splines and Wavelets," SIAM Review, vol. 42, no. 1, pp. 43-67, March 2000.
M. Unser, T. Blu, "Construction of Fractional Spline Wavelet Bases," Proceedings of the SPIE Conference on Mathematical Imaging: Wavelet Applications in Signal and Image Processing VII, Denver CO, USA, July 19-23, 1999, vol. 3813, pp. 422-431.