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Table 7 RMSD of positional errors of the proposed method, pre-smoothing scale 0

From: A one-dimensional slope detection approach

Error Erf Tanh Sigmoid Ramp Step Arctan
Position (point) 0.0097 0.0140 0.1107 0.2065 0.3527 0.0062
Width (%) 1.1900 2.0600 19.2500 6.9900 0.9900 1.3400
Contrast (%) 2.6300 7.2600 9.0000 16.4400 7.4300 24.8700
Offset (%) 3.7300 10.3800 12.7100 23.4800 22.9800 35.7400