Table 3 Inter-system reliability results after scanning a mannequin’s head 3 times with each system.

From: Reliability and validity of handheld structured light scanners and a static stereophotogrammetry system in facial three-dimensional surface imaging

 

3dMD versus Artec Eva (RMS in mm ± SD)

3dMD versus Artec Space Spider (RMS in mm ± SD)

Artec Space Spider versus Artec Eva (RMS in mm ± SD)

Distance map

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1st scan

0.22 ± 0.20

0.17 ± 0.15

0.08 ± 0.15

2nd scan

0.19 ± 0.18

0.19 ± 0.19

0.15 ± 0.22

3rd scan

0.21 ± 0.17

0.16 ± 0.14

0.12 ± 0.16

Mean difference ± SD

0.21 ± 0.01

0.17 ± 0.03

0.12 ± 0.01

Registration error

0.07

0.06

0.06

  1. The RMS represents the difference between the 3dMD versus Artec Eva, 3dMD versus Artec Space Spider, and Artec Space Spider versu Artec Eva system. Fine lines are visible on the head (arrow). These lines were cut into the mannequin for a previous study.
  2. RMS root mean square
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