Model | Formula | Category | Crisp Threshold to segment standing water | Reference |
AWEI | C1 * (GREEN − SWIR1) − (C2 * NIR + C3 * SWIR2) | Water SI | AWEI > 0 | [19] |
AWEIsh | BLUE + D1 * GREEN – D2 * (NIR + SWIR1) – D3 * SWIR2 | Water SI | AWEIsh > 0 | [19] |
mNDWI | (GREEN – SWIR1)/(GREEN + SWIR1) | Water SI | mNDWI > 0 | [23] |
NDWI | (GREEN – NIR)/(GREEN + NIR) | Water SI | NDWI > 0 | [21] |
NDFI | (RED – SWIR2)/(RED + SWIR2) | Flooding SI | NDFI > 0.32 | [18] |
SAVI | (1 + L) * (NIR – RED)/(NIR + RED + L) | Vegetation SI | SAVI < −0.25 or SAVI < −0.27 (in the present paper we used −0.25) | [20] |
WRI | (GREEN + RED)/(NIR + SWIR2) | Water SI | WRI > 1 | [41] |
HV | f(SWIR2, NIR, RED) | Water indicator | H < (−0.3593 * V) + 360 or H > (0.0363 * V) + 75.853 or H > (0.054 * V) + 150.04 and V < 5500 | [22] |