Table 2.
Statistics (mean and standard deviation) on the number, X, of exposures per pixel for the ‘S’ dither pattern: percentages of covering for individual (X = 0, 1, 2, 3, 4) and cumulative (X > 4, X ≥ 3, X ≥ 4) bins.
| VIS | NISP | |
|---|---|---|
| Covering | mean ± st. dev. (%) | mean ± st. dev. (%) |
| X = 0 | (3.57 ± 5.71)×10−6 | 0.00 ± 0.00 |
| X = 1 | 0.23 ± 0.05 | 0.99 ± 0.04 |
| X = 2 | 4.34 ± 0.03 | 8.13 ± 0.02 |
| X = 3 | 47.51 ± 0.09 | 40.46 ± 0.10 |
| X = 4 | 36.52 ± 0.32 | 42.12 ± 0.16 |
| X > 4 | 11.40 ± 0.29 | 8.30 ± 0.17 |
| X ≥ 3 | 95.43 ± 0.03 | 90.88 ± 0.05 |
| X ≥ 4 | 47.92 ± 0.08 | 50.42 ± 0.06 |
Notes. The percentage of pixels with X = 0 or 1 is negligible or very small for both VIS and NISP. Boldface values refer to requirements 1 and 2 of Sect. 4.2.
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