Computes a 2D kernel for an arbitrary angle using steerable filters. Steerable functions can be computed from a linear combination of rotated basis kernels.
William T. Freeman and Edward H. Adelson, "The Design and Use of Steerable Filters", IEEE Trans. Patt. Anal. and Machine Intell., Vol. 13, No. 9, Sept. 1991
setBasisCompute the steerable filter.
coef- Coefficients for each basis.
basis- Kernels which form the basis for the steerable filter.
(double angle)Computes the kernel at the specified angle.
angle- Angle the kernel should be pointed at.
- The computed kernel. Data is recycled each time compute is called.