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Table 4 Optical marker comparison, triangulation error, and Euclidian distance

From: Multi-view 3D skin feature recognition and localization for patient tracking in spinal surgery applications

Optical marker detection

Triangulation error

Euclidean distance

Method

MSER

SURF

MSER

SURF

Markers amount

52

43

52

43

Mean [mm]

0.290

0.303

0.627

0.622

Standard deviation [mm]

0.124

0.133

0.101

0.107

Rms [mm]

0.315

0.331

0.635

0.631

Min [mm]

0.018

0.028

0.232

0.223

Quartile 1 [mm]

0.207

0.202

0.579

0.567

Median [mm]

0.279

0.313

0.621

0.624

Quartile 3 [mm]

0.390

0.399

0.685

0.684

Max [mm]

0.557

0.595

0.840

0.823