| Constant name | Constant | Description |
| DESATURATE_LIGHTNESS | 1 | This technique averages the maximum and minimum channel value of a color for each pixel. |
| DESATURATE_LUMINOSITY | 2 | This technique uses a weighted average for each component, conform with how people perceive the luminosity of a color. The weights are red = 0.31, green = 0.61, blue = 0.08 |
| DESATURATE_AVERAGE | 3 | This technique averages the components of a color for each pixel. |
| Image Number | Integer | The ID of the image. |
| Mode | Integer | The desaturation mode. |