| MSI | Multispectral Imaging |
| HSI | Hyperspectral Imaging |
| SU | Spectral Unmixing |
| SC | Sum-to-one Constraint |
| NC | Non-negativity Constraint |
| CH | Cultural Heritage |
| PM | Pigment Mapping |
| BRDF | Bidirectional Reflectance Distribution Function |
| LIP | Logarithmic Image Processing |
| MSE | Mean Square Error |
| ROC | Receiver Operating Characteristic |
| FPR | False Positive Rate |
| TPR | True Positive Rate |