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Table 1 Performance comparison results of different image auto-focusing algorithms on the optimal conditions for different workpieces

From: An image auto-focusing algorithm for industrial image measurement

  Brake pad Bearing
AF1 AF2 AF3 AF4 AF1 AF2 AF3 AF4
RMSE(mm) 0.0025 0.0035 0.0034 0.0011 0.0032 0.0031 0.0028 0.0013
SD(mm) 0.0026 0.0037 0.0036 0.0018 0.0029 0.0035 0.0036 0.0017
T(mm) 0.0080 0.0110 0.0110 0.0030 0.0100 0.0090 0.0090 0.0030
  Big standard cuboid Small standard cuboid
RMSE(mm) 0.0037 0.0032 0.0042 0.0010 0.0029 0.0028 0.0031 0.0013
SD(mm) 0.0035 0.0031 0.0040 0.0009 0.0027 0.0027 0.0029 0.0012
T(mm) 0.0100 0.0090 0.0110 0.0030 0.0090 0.0090 0.0100 0.0040