5 swiss francs |
approximate scan time 24h resolution 170dpi (# of nodes > 47000) the stripes that are apparent in the original stem from a slight excentricity of the x-axis spindle this generates a sinusoidal pattern with an amplitude of less than 0.01mm over the entire coin the corrected version is obtained by adding a sinusoidal correction with an adjusted amplitude, period and phase to the measured data |
original |
corrected |