Figure 4.

Conversion between TSVD threshold and cut-off frequency in mm⁻¹ for different spherical radii from 2 (top most) to 15 mm (bottom most). The radius is increasing from top to bottom with changing line colors from black over red to blue. The dashed black lines mark the TSDV threshold (0.05) and the radius (3 mm) used in the original SHARP publication (2), which corresponds to a cut-off frequency of approximately 0.037 mm⁻¹.