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Update VI.md
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oh231 authored Jun 27, 2024
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18 changes: 9 additions & 9 deletions resources/VI.md
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- NDVI (normalized difference vegetation index)
NDVI = (R800-R670) / (R800+R670)
(R800 means reflectance at 800 nm)
- NDVI = (R800-R670) / (R800+R670)
- R800 means reflectance at 800 nm
- SRI (simple ratio index)
R800 / R670
- R800 / R670
- EVI (enhanced vegetation index)
2.5 * (R800-R670) / (R800+6*R670-7.5*R490+1)
- 2.5 * (R800-R670) / (R800+6*R670-7.5*R490+1)
- ARVI (atmospherically resistant vegetation index)
(R800-2*R670) / (R800+6*R670-7.5*R490+1)
- (R800-2*R670) / (R800+6*R670-7.5*R490+1)
- SG (sum green index)
average reflectance between 500-599 nm
- Average reflectance between 500-599 nm
- reNDVI (red edge normalized difference vegetation index)
(R750-R705) / (R750+R705)
- (R750-R705) / (R750+R705)
- mRESR (modified red edge simple ratio index)
(R750-R445) / (R750+R445)
- (R750-R445) / (R750+R445)
- mRENDVI (modifoed red edge NDVI)
(R750-R705) / (R750+R705-2*R445);
- (R750-R705) / (R750+R705-2*R445);
* VOG1
Vogelmann red edge index 1
R740 / R720
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