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For calculating the accuracies, interpolated spectra were generated at an original parameter grid and were compared with an original model template at its grid. Numbers of interpolated spectra are 2590 and 2125 for parallel plan models and spherical models, respectively.
Processing time is 8-9 sec per an interpolation on average. The time was improved from the 4D interpolation because used model templates were reduced from ~100-300 to ~30.
Processing time (sec)
| |
mean |
min |
max |
median |
stddev |
| p-model |
8.636729 |
8.308514 |
9.230231 |
8.643057 |
0.103503 |
| s-model |
8.295978 |
7.713312 |
10.262160 |
8.278359 |
0.218529 |
The RMS of residuals is on average less than 1% but it becomes worse (>1%) for the blue side of spherical models.
RMS (%)
| |
mean |
min |
max |
median |
stddev |
| p-model all |
0.049745 |
0.001470 |
1.144177 |
0.014773 |
0.103231 |
| p-model blue |
0.082114 |
0.001504 |
2.027684 |
0.023470 |
0.178944 |
| p-model nir |
0.019759 |
0.000869 |
0.377890 |
0.006437 |
0.037863 |
| p-model red |
0.025319 |
0.000738 |
0.473988 |
0.008091 |
0.049938 |
| s-model all |
0.769161 |
0.012876 |
21.199334 |
0.300931 |
1.726265 |
| s-model blue |
1.356829 |
0.024040 |
40.370744 |
0.509499 |
3.146068 |
| s-model nir |
0.260185 |
0.002558 |
4.715903 |
0.129480 |
0.436969 |
| s-model red |
0.340520 |
0.004064 |
6.427464 |
0.165988 |
0.596282 |
|