System model | MS-OCT | Std-Res 3D scan | High-Res 3D scan | 3D digital microscopy | White light confocal profilometry |
---|---|---|---|---|---|
Custom | Custom, 2nd gen. | Custom design, 3rd gen. | Hirox RH-2000 | Hirox Nano Point Scanner | |
Scan modalities(s) | |||||
Topography | \(\times\) | \(\times\) | \(\times\) | \(\times\) | \(\times\) |
Colour | \(\times\) | \(\times\) | \(\times\) | ||
Stratigraphy | \(\times\) | ||||
Gloss | \(\times\) | ||||
Imaging component(s) | 1 | 2 | 2 | 1 | 1 |
Camera model | N/A | Nikon D800E | Canon 5DS-R | Hirox | JYFEL |
Lens model | Thorlabs LSM04-BB | Nikkor PC-E 85 mm | Canon TS-E 90 mm | MXB-5000REZ at 140\(\times\) | NP3 |
Lens extension tube(s) | N/A | N/A | Canon EF25 II | N/A | N/A |
Filter(s) | N/A | 3 Hoya HD polarisers | 3 Canon polarisers | N/A | N/A |
Illumination component(s) | 1 | 1 | 1 | 2 | 1 |
Type | SLD | Projector | Projector | Fiber optics LED | Fiber optics LED |
Model/type | N/A | Acer X113H | AXAA M6 | Hirox | JYFEL |
Illumination intensity | N/A | 2800 lm | 1200 lm | Raking light at 100% and dark field at 10% | 100% |
Computational hardware | |||||
Computer | Dell T1700 | ASUSTeK | ASUSTeK | Apple iMac | Apple iMac |
Processor | Intel Xeon E3-1271v3 | Intel Core i7 | Intel Core i7 | Intel Core i5 | Intel Core i5 |
RAM memory | 16 GB | 128 Gb | 128 Gb | 32 GB | 32 GB |
Memory | 1 TB SSD | 500 Gb SSD | 500 Gb SSD | 1 TB SSD | 1 TB SSD |
Scan sampling resolution | |||||
Lateral resolution (XY) | \(8.5\,\upmu \hbox {m}\times 67.6\,\upmu \hbox {m}\) | \(25\,\upmu \hbox {m}\) | \(7\,\upmu \hbox {m}\) | \(1.1\,\upmu \hbox {m}\) | \(2.6\,\upmu \hbox {m}\) |
Depth resolution (Z) | \(3.0\,\upmu \hbox {m}\) | \(27.5\,\upmu \hbox {m}\) | \(17.5\,\upmu \hbox {m}\) | N/A | \(<.150\,\upmu \hbox {m}^{\mathrm{a}}\) |
Scan area | |||||
Tile size (XY) | \(5\hbox { mm}\times 5\hbox { mm}\) | \(170\hbox { mm}\times 100\hbox { mm}\) | \(60\hbox { mm}\times 40\hbox { mm}\) | \(2.1\hbox { mm}\times 1.31\hbox { mm}\) | N/A |
Depth-of-field | \(1.87\,\hbox {mm}\) | \(\approx 8.5\,\hbox {mm}\) | \(\approx 1\,\hbox {mm}\) | \(0.05\,\hbox {mm}\) | \(1.40\,\hbox {mm}\) |
Automated range (XY) | \(0.2\hbox { m}\times 0.2\hbox { m}\) | \(1.3\hbox { m}\times 1.3\hbox { m}\) | \(1.0\hbox { m}\times 1.0\hbox { m}\) | \(0.5\hbox { m}\times 0.5\hbox { m}\) | \(0.5\hbox { m}\times 0.5\hbox { m}\) |
Settings | |||||
ISO | N/A | 100 | 100 | Gain 0 dB | N/A |
Aperture | N/A | 1/16 | 1/16 | Full open | N/A |
Shutter speed | N/A | 0.5 s | 3.2 s | 1/250 s | N/A |
Other parameters | N/A | N/A | N/A | Edge \(=\) 9, Sat. \(=\) 2, Colour \(=\) 2 | N/A |
Images per tile | 1024 | 26 | 26 | \(\approx\) 50 for \(450\,\upmu \hbox {m}\) top-bottom range | N/A |
Tile overlap | N/A | 41% (X), 30% (Y) | 20% (X), 25% (Y) | 30% | N/A |
Configuration | |||||
Painting orientation | Vertical | Vertical | Vertical | Horizontal | Horizontal |
Imaging distance (l) | \(\simeq 42\,\hbox {mm}\) | 440 mm | 175 mm | 10 mm | 12 mm |
Imaging angle (\(\beta\)) | \(\approx 5.0^{\circ }\) | \(40^{\circ }\) | \(21.5^{\circ }\) | \(0^{\circ }\) | \(0^{\circ }\) |