| a | Color component—green for negative and red for positive values |
| b | Color component—blue for negative and yellow for positive values |
| B | Blue |
| BMP | Bitmap |
| CA | Controlled atmosphere |
| CFS | Correlation-based feature selection |
| G | Green |
| L | Lightness component from black to white |
| Lab | Color space composed of color channels L, a, and b |
| LED | Light-emitting diode |
| MAP | Modified atmosphere packaging |
| MCC | Matthews correlation coefficient |
| NA | Normal atmosphere |
| O3 | Gaseous ozone |
| PRC Area | Precision–recall area |
| R | Red |
| RGB | Color space composed of color channels R, G, and B |
| ROC Area | Receiver operating characteristic area |
| X | Component with color information |
| XYZ | Color space composed of color channels X, Y, and Z |
| Y | Lightness |
| Z | Component with color information |