Table 4.
Cross-validation results for crude protein content (% dry matter, SNV: standard normal variate, Der1: Savitzky–Golay derivative 1, Der2: Savitzky–Golay derivative 2, NORM: normalization, RMSECV: Root Mean Square of Standard Error in Cross-Validation).
| Device | Pretreatment | Latent variables | RMSECV | R2cv |
|---|---|---|---|---|
| DLP NIRscan Nano EVM | SNVDer1 | 8 | 1.2 | 0.656 |
| F750 | NORM | 3 | 0.7 | 0.874 |
| LabSpec 4 | SNVDer1 | 5 | 0.5 | 0.926 |
| MicroNIR1700 | SNVDer2 | 9 | 0.6 | 0.911 |
| MicroNIR2200 | SNVDer1 | 6 | 0.7 | 0.893 |
| NIRONE 2.2 | SNVDer1 | 8 | 0.6 | 0.900 |
| Scio | – | 5 | 0.7 | 0.874 |
| TellSpec | SNVDer2 | 9 | 1.1 | 0.732 |