Modified B-spline Functions for Efficient Image Interpolation
نویسندگان
چکیده
A parametric class of modified B-spline functions is studied for its applicability in digital image interpolation tasks. The modified functions are generated by weighting and shifting of classical B-splines of different degrees. The weighting coefficients are optimized to assures an effective attenuation of the imaging frequencies, caused by the interpolation. The most computationally expensive part of the interpolation procedure – generation of new pixels at arbitrary points, is realized efficiently using a modified Farrow structure. Different interpolation methods are experimentally compared for their capability to perform successive rotations. The new modified Bspline interpolating kernels show superior performance while the computational complexity remains practically the same.
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