Fast and stable evaluation of splines and their derivatives generated by the seven-direction quartic box-spline

Volume reconstruction based on the six-direction cubic box-spline

“…box spline algorithm code M c400 [56,32] [56] M c010 [34] [34] M c101 [33] [33] M f100 [40,29] [29] M b200 [4,24] [24] M b110 [30,36,31] [35] M b040 [10] an approximation, say a triangulation of a bivariate box spline graph. An alternative approximate evaluation is based on Fast Fourier transform [45].…”