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A comparison of surface acquisition using the freehand probe and the range scanner. The number of scanner points was randomly down-sampled to match the number of points acquired by a freehand probe in 20 seconds. The resulting residual actually improves.
| Data type | Points | Acquisition time | Initial guess FRE | Registration time | Mean distance, mm (max) |
|---|---|---|---|---|---|
| Freehand probe | 797 | 20 sec | 7.15 mm | 15 sec | 1.23±1.22 (8.21) |
| Range scanner | 804 | 21 sec | 5.02 mm | 13 sec | 0.47±0.40 (3.06) |
