Visual Greenness (VG) : An NDVI-derived image of vegetation greenness compared to a very green reference such as a golf course. See also: Greenness Factor
National Wildfire Coordinating Group (NWCG), Glossary of Wildland Fire Terminology, NWCG Program Management Unit, National Interagency Fire Center, Boise, ID, USA 2014. http://www.nwcg.gov/pms/pubs/glossary/pms205.pdf, (For Fr - Amer) {45}