| VC | Venous compliance |
| SPG | Strain gauge plethysmography |
| NCPG | Non-contact plethysmography |
| RGB | Red-green-blue |
| CBV | Change in blood volume |
| CCD | Charge-coupled device |
| CIEXYZ | Commission Internationale de l’Éclairage XYZ |
| MRA | Multiple regression analysis |
| MCS | Monte Carlo simulation |
| ROI | Region of interest |