diff --git a/resources/VI.md b/resources/VI.md index 4c0b745..94c0ec2 100644 --- a/resources/VI.md +++ b/resources/VI.md @@ -1,114 +1,55 @@ - -| | | | | -|:----:|:----:|:---:|:-----:| -| | | | | - For reference, this table lists vegetation indices (VI) with their definitions. + | Name | Definition | Remarks | |---------|-------------------|------------| -| NDVI (normalized difference vegetation index) | NDVI = (R800-R670) / (R800+R670) | R800 means reflectance at 800 nm - -- SRI (simple ratio index) - - R800 / R670 -- EVI (enhanced vegetation index) - - 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) -- SG (sum green index) - - Average reflectance between 500-599 nm -- reNDVI (red edge normalized difference vegetation index) - - (R750-R705) / (R750+R705) -- mRESR (modified red edge simple ratio index) - - (R750-R445) / (R750+R445) -- mRENDVI (modifoed red edge NDVI) - - (R750-R705) / (R750+R705-2*R445); -- VOG1 (Vogelmann red edge index 1) - - R740 / R720 -- VOG2 (Vogelmann red edge index 2) - - (R734-R747) / (R715+R726) -- VOG3 (Vogelmann red edge index 3) - - (R734-R747) / (R715+R720) -- REP (red edge position index) - - Wavelengh in 690-740 nm with highest reflectance -- PRI (photochemical reflectance index) - - (R531-R570) / (R531+R570) -- SIPI (structure insensitive pigment index) - - (R800-R445) / (R800+R680) -- RGRI (red greeen ratio index) - - (Average reflectance between 500-600 nm) / (average reflectance between 600-700 nm) -- PSRI (plant senescence reflectance index) - - (R680-R500) / R750 -- CAR1 (carotenoid reflectance index 1) - - (1/R510) - (1/R550) -- CAR2 (carotenoid reflectance index 2) - - (1/R510) - (1/R700) -- ANTH1 (anthocyanin reflectance index 1) - - (1/R550) - (1/R700) - -- ANTH2 (Anthocyanin reflectance index 2) - - R800 * (1/R550-1/R700) -- NBNDVI (narrowband normalized difference vegetation index) - - (R850-R680) / (R850+R680) -- NRI (nitrogen reflectance index) - - (R570-R670) / (R570+R670) -- TCARI (transformed chlorophyll absorption and reflectance index) - - 3 * (R700-R600-(R700-R550) * (R700/(R850+R670))) -- PhRI (physiological reflectance index) - - (R550-R531) / (R550+R531) -- NPCI (normalized pigment chlorophyll ratio index) - - (R680-R450) / (R680+R450) -- HI (health index) - - (R534-R698) / (R534+R698) - 0.5*R704 -- CLS (Cercospora leaf spot index) - - (R698-R570) / (R698+R570) - R734 -- SBRI (sugar beet rust index) - - (R570-R513) / (R570+R513) + 0.5*R704 -- PMI (powdery mildew index) - - (R520-R584) / (R520+R584) + R724 -- IGI (image guided index) - - R1529 / R1416 -- SRC (simple ratio contrast) - - R1459 / R1129 -- WC (Weber contrast) - - (R1459-R1129) / R1129 -- MC (Michelson contrast) - - (R1460-R1421) / (R1460+R1421) -- WBI (water band index) - - R900 / R970 -- MSI (moisture stress index) - - R1599 / R819 -- NDWI (normalized difference water index) - - (R857-R1241) / (R857+R1421) -- swirNDVI1 (shortwave infrared normalized difference vegetation index) - - (R1080-R1460) / (R1080+R1460) -- swirNDVI2 (shortwave infrared normalized difference vegetation index 2) - - (R1080-R1570) / (R1080+R1570) -- swirNDVI3 (shortwave infrared normalized difference vegetation index 3) - - (R1080-R1660) / (R1080+R1660) -- swirNDVI4 (shortwave infrared normalized difference vegetation index 4) - - (R1080-R2180) / (R1080+R2180) -- TVI (transformed vegetation index) - - abs(NDVI+0.5) / abs(NDVI+0.5) * sqrt(abs(NDVI+0.5)) -- NDGI (normalized difference greenness index) - - (AvgReflectance(500:600)-AvgReflectance(600:700)) / (AvgReflectance(500:600)+AvgReflectance(600:700)) -- RI (redness index) - - (AvgReflectance(600:700)-AvgReflectance(500:600)) / (AvgReflectance(600:700)+AvgReflectance(500:600)) -- MSAVI (modified soil adjusted vegetaion index) - - 0.5 * (2*R800 + 1 - sqrt((2*(R800+1)^2)-8*(R800-R670))) -- VDVI (visible band difference vegetation index) - - Red = AvgReflectance(600:700) - - Green = AvgReflectance(500:600) - - Blue = AvgReflectance(400:500) - - VDVI = (2*Green-Red-Blue) / (2*Green+Red+Blue); -- NDNI (normalized difference nitrogen index) - - (log10(1/R1510)-log10(1/R1680)) / (log10(1/R1510)+log10(1/R1680)) -- NDLI (normalized difference lignin index) - - (log10(1/R1754)-log10(1/R1680)) / (log10(1/R1754)+log10(1/R1680)) -- NMDI (normalized multiband drought index) - - (R860-(R1640-R2130)) / (R860+(R1640-R2130)) -- NLI (nonlinear index) - - Red = AvgReflectance(600:700) - - NIR = AvgReflectance(800:1000) - - NLI = (NIR^2-Red) / (NIR^2+Red) +| NDVI (normalized difference vegetation index) | NDVI = (R800-R670) / (R800+R670) | R800 means reflectance at 800 nm | +| SRI (simple ratio index) | R800 / R670 | | +| EVI (enhanced vegetation index) | 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) | | +| SG (sum green index) | Average reflectance between 500-599 nm | | +| reNDVI (red edge normalized difference vegetation index) | (R750-R705) / (R750+R705) | | +| mRESR (modified red edge simple ratio index) | (R750-R445) / (R750+R445) | | +| mRENDVI (modifoed red edge NDVI) | (R750-R705) / (R750+R705-2*R445) | | +| VOG1 (Vogelmann red edge index 1) | R740 / R720 | | +| VOG2 (Vogelmann red edge index 2) | (R734-R747) / (R715+R726) | | +| VOG3 (Vogelmann red edge index 3) | (R734-R747) / (R715+R720) | | +| REP (red edge position index) | Wavelengh in 690-740 nm with highest reflectance | | +| PRI (photochemical reflectance index) | (R531-R570) / (R531+R570) | | +| SIPI (structure insensitive pigment index) | (R800-R445) / (R800+R680) | | +| RGRI (red greeen ratio index) | (Average reflectance between 500-600 nm) / (average reflectance between 600-700 nm) | | +| PSRI (plant senescence reflectance index) | (R680-R500) / R750 | | +| CAR1 (carotenoid reflectance index 1) | (1/R510) - (1/R550) | | +| CAR2 (carotenoid reflectance index 2) | (1/R510) - (1/R700) | | +| ANTH1 (anthocyanin reflectance index 1) | (1/R550) - (1/R700) | | +| ANTH2 (Anthocyanin reflectance index 2) | R800 * (1/R550-1/R700) | | +| NBNDVI (narrowband normalized difference vegetation index) | (R850-R680) / (R850+R680) | | +| NRI (nitrogen reflectance index) | (R570-R670) / (R570+R670) | | +| TCARI (transformed chlorophyll absorption and reflectance index) | 3 * (R700-R600-(R700-R550) * (R700/(R850+R670))) | | +| PhRI (physiological reflectance index) | (R550-R531) / (R550+R531) | | +| NPCI (normalized pigment chlorophyll ratio index) | (R680-R450) / (R680+R450) | | +| HI (health index) | (R534-R698) / (R534+R698) - 0.5*R704 | | +| CLS (Cercospora leaf spot index) | (R698-R570) / (R698+R570) - R734 | | +| SBRI (sugar beet rust index) | (R570-R513) / (R570+R513) + 0.5*R704 | | +| PMI (powdery mildew index) | (R520-R584) / (R520+R584) + R724 | | +| IGI (image guided index) | R1529 / R1416 | | +| SRC (simple ratio contrast) | R1459 / R1129 | | +| WC (Weber contrast) | (R1459-R1129) / R1129 | | +| MC (Michelson contrast) | (R1460-R1421) / (R1460+R1421) | | +| WBI (water band index) | R900 / R970 | | +| MSI (moisture stress index) | R1599 / R819 | | +| NDWI (normalized difference water index) | (R857-R1241) / (R857+R1421) | | +| swirNDVI1 (shortwave infrared normalized difference vegetation index) | (R1080-R1460) / (R1080+R1460) | | +| swirNDVI2 (shortwave infrared normalized difference vegetation index 2) | (R1080-R1570) / (R1080+R1570) | | +| swirNDVI3 (shortwave infrared normalized difference vegetation index 3) | (R1080-R1660) / (R1080+R1660) | | +| swirNDVI4 (shortwave infrared normalized difference vegetation index 4) | (R1080-R2180) / (R1080+R2180) | | +| TVI (transformed vegetation index) | abs(NDVI+0.5) / abs(NDVI+0.5) * sqrt(abs(NDVI+0.5)) | | +| NDGI (normalized difference greenness index) | (AvgReflectance(500:600)-AvgReflectance(600:700)) / (AvgReflectance(500:600)+AvgReflectance(600:700)) | | +| RI (redness index) | (AvgReflectance(600:700)-AvgReflectance(500:600)) / (AvgReflectance(600:700)+AvgReflectance(500:600)) | | +| MSAVI (modified soil adjusted vegetaion index) | 0.5 * (2*R800 + 1 - sqrt((2*(R800+1)^2)-8*(R800-R670))) | | +| VDVI (visible band difference vegetation index) | VDVI = (2*Green-Red-Blue) / (2*Green+Red+Blue) | Red = AvgReflectance(600:700), Green = AvgReflectance(500:600), Blue = AvgReflectance(400:500) | +| NDNI (normalized difference nitrogen index) | (log10(1/R1510)-log10(1/R1680)) / (log10(1/R1510)+log10(1/R1680)) | | +| NDLI (normalized difference lignin index) | (log10(1/R1754)-log10(1/R1680)) / (log10(1/R1754)+log10(1/R1680)) | | +| NMDI (normalized multiband drought index) | (R860-(R1640-R2130)) / (R860+(R1640-R2130)) | | +| NLI (nonlinear index) | NLI = (NIR^2-Red) / (NIR^2+Red) | Red = AvgReflectance(600:700), NIR = AvgReflectance(800:1000) |