Table 1.
SFDI instrument, data acquisition, and data processing parameters.
| Instrument | |
|---|---|
| Model | OxImager RS (Modulated Imaging, Irvine, CA) |
| Source | LEDs at 9 wavelengths (470–970 nm) + white light |
| Detector | CCD camera: 12-bit, 1.4 MP (1392 × 1040 pixels) |
| Field of view | 20 × 15 cm2 (maximum) |
| Pixel size (at sample) | 0.14 × 0.14 mm2 |
|
| |
| Data Acquisition Parameters | |
|
| |
| Spectral wavelengths | 659, 691, 731, 851 nm (4 total) |
| Spatial frequencies | 0, 0.025, 0.05, 0.075, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5 mm−1 (13 total) |
| No. of measurements | 10 (per wavelength per frequency) |
|
| |
| Data Processing Parameters | |
|
| |
| 2 × 2 binning | Sum data over 2 × 2 groups of pixels |