NDVI:Normalized Difference Vegetation Index,归一化植被指数,从中文名这个“归一化”咱们初步就可以知道它的值范围[-1,1],所以大兄弟,值都在-100了,检查一下数据吧,但也不一定错哈,这种情况我之后会在视频里面说
再者它是一种植被指数,植被指数它又是啥,它是根据植被的光谱特性,将卫星可见光和近红外波段进行组合,形成了各种植被指数,也就是说肯定不止一种啦,比如多光谱影像中常见的比值植被指数、差值植被指数、归一化差值植被指数、抗大气影响植被指数......
随着高光谱遥感技术的发展,遥感仪器的波谱分辨率得到显著提高,越来越多地能够很好反映植物色素含量、水含量、叶片细胞结构等植物信息的植被指数已被发现,不光能反映植被整体状态,还可以局部反应细小的变化
啥叫多光谱、高光谱,简单粗暴去区分,高光谱波段多通道窄,比如Hyperion有233~309个波段,而多光谱波段少通道宽,比如ETM+,只有8个波段
Hyperspectral indices |
Equation |
Reference |
Anthocyanin Reflectance index(ARI) |
ARI=(R700-R550)/R550×R700 |
Merzlyak.(1999) |
Blue Index(BI) |
BI=R450/R490 |
Calderón R et al.(2013) |
Carotenoid Reflectance Index(CRI) |
CRI=(1/R510)-(1/R700) |
Gitelson et al.(2002) |
Carter Indeces(CTR) |
CTR=R695/R420 |
Carter.(1994) |
Curvature Index(CUR) |
CUR=R6832/(R675×R691) |
Zarco-Tejada et al.(2001) |
The new DD index(DDn) |
DDn=2×(R710-R(710-50)-R(710+50)) |
le Maire et al.(2008) |
Enhanced Vegetation Index(EVI) |
EVI=2.5×((R858-R645)/(R858+6×R645-7.5×R469+1)] |
Huete et al.(2002) |
Greenness Index(GI) |
GI=R570/R670 |
Calderon R et al.(2013) |
Gitelson and Merzlyak(GM) |
GM=R750/R550 |
Gitelson et al .(1997) |
Green Normalized Difference Vegetation Index(GNDVI) |
GNDVI=(R780-R550)/(R780+R550) |
Gitelson et al .(1996) |
Global Vegetation Water Index(GVWI) |
GVWI=[(R820+0.1)-(R1600+0.02)]/[(R820+0.1)+(R1600+0.02)] |
Ceccato P.(2002) |
Healthy Index(HI) |
HI=(R534-R698)/(R534+R698)-0.5×R704 |
Mahlein et al.(2013) |
Lichtenthaler Indices(LIC) |
LIC=R440/R690 |
Lichtenthaler et al.(1996) |
Modified Anthocyanin Reflectance Index(mARI) |
mARI=R800×(R700-R550)/R550×R700 |
Merzlyak.(1999) |
Modified Chlorophyll Absorption Integral(mCAI) |
mCAI=(R545+R752)/2×(752-545) -1.158×sum(R545,R752) |
Laudien et al.(2003) |
Modified Chlorophyll Absorption in Reflectance Index(MCARI) |
MCARI=((R700-R670)-0.2×(R700-R550))×(R700/R670) |
Daughtry et al.(2000) |
Maximum Difference Water Index(MDWI) |
MDWI=(Rmax-Rmin)/(Rmax+Rmin)1500-1750 |
Eitel J U H et al.(2006) |
modified red-edge normalized difference vegetation index(mND705) |
mND705=(R750-R705)/(R750+R705-2×R445) |
Sims et al .(2002) |
Improved SAVI with self-adjustment factor L(MSAVI) |
MSAVI=0.5×(2×R800+1-SQRT((2×R800+1)2-8×(R800-R670))) |
Qi et al.(1994) |
Moisture Stress Index(MSI) |
MSI=R1599/R819 |
Hunt et al .(1989) |
Modified Simple Ratio(MSR) |
MSR=((R800/R670)-1)/(SQRT(R800/R670)+1) |
Chen.(1996) |
modified red-edge ratio(mSR705) |
mSR705=(R750-R445)/(R705+R445) |
Sims et al .(2002) |
the MERIS terrestrial chlorophyll index(MTCI) |
MTCI=(R754-R709)/(R709-R681) |
Dash et al .(2007) |
Modified Triangular Vegetation Index(MTVI) |
MTVI=1.2×[1.2×(R800-R550)-2.5×(R670-R550)] |
Haboudane et al.(2004) |
Normalized Diffierence Infrared Index(NDII) |
NDII=(R819-R1649)/(R819+R1649) |
Hardisky et al.(1983) |
Normalized Diffierence Nitrogen Index(NDNI) |
NDNI=[log(1/R1510)-log(1/R1680)]/[log(1/R1510)+log(1/R1680)] |
Serrano et al.(2002) |
Normalized Difference Vegetation Index(NDVI) |
NDVI=(R682-R553)/(R682+R553) |
Gandia et al.(2004) |
Normalized Difference Water Index(NDWI) |
NDWI=(R860-R1240)/(R860+R1240) |
Gao.(1996) |
Normalized Pigment Chlorophyll Index(NPCI) |
NPCI=(R680-R430)/(R680+R430) |
Penuelas et al.(1994) |
Normalized Phaeophytinization Index(NPI) |
NPI=(R415-R435)/(R415+R435) |
Barnes.(1992) |
Normalized Water Index(NWI) |
NWI=(R970-R850)/(R970+R850) |
Babar et al.(2006) |
Optimized Soil Adjusted Vegetation Index(OSAVI) |
OSAVI=(1+0.16)×(R750-R705)/(R750+R705+0.16) |
Wu et al.(2008) |
Photochemical Reflectance Index(PRI) |
PRI=(R570-R539)/(R570+R539) |
Gamon et al.(1992) |
Pigment Specific Normalized Difference(PSNDb) |
PSNDb=(R800-R635)/(R800+R635) |
Blackburn.(1998) |
Plant Senescence Reflectance Index(PSRI) |
PSRI=(R680-R500)/R750 |
Merzlyak et al.(1999) |
Pigment Specific Simple Ratio Chlorophyll a(PSSRa) |
PSSRa=R800/R675 |
Blackburn.(1998) |
Pigment Specific Simple Ratio Chlorophyll b(PSSRb) |
PSSRb=R800/R650 |
Blackburn.(1998) |
Pigment Specific Simple Ratio Carotenoids(PSSRc) |
PSSRc=R800/R500 |
Blackburn.(1998) |
Plant Water Index(PWI) |
PWI =(R900/R970)/((R860-R1240)/(R860+R1240)) |
Penuelas J.(1997) |
Ratio Analysis of Reflectance Spectra a(RARSa) |
RARSa=R675/R700 |
Chappelle et al.(1992) |
Ratio Analysis of Reflectance Spectra b(RARSb) |
RARSb=R675/R650×R700 |
Chappelle et al.(1992) |
Redness Index(RI) |
RI=R700/R670 |
Gitelson et al.(2000) |
Ratio Difference Vegetation Index(RDVI) |
RDVI=(R800-R670)/(R800-R670)0.5 |
Rougean et al .(1995) |
Red Edge Amplitude(REA) |
REA= the max in first derivative spectrum within red edge region |
Boochs F et al.(1990) |
Red Edge Position(REP) |
REP= wavelength to the max in first derivative spectrum within red edge region |
Curran et al.(1995) |
Red / Green、Blue/Green and Blue/Red Pigment indices(RGI,BGI,BRI) |
RGI=R690/R550;BGI=R400/R550; BRI=R450/R690 |
Zarco-Tejada et al.(2005) |
Red-edge Model(RM) |
RM=R750/R720-1 |
Gitelson A A et al.(2005) |
Sum of first derivative spectrum within red-edge region(SDr) |
SDr=sum of first derivative spectrum within red edge region |
Gong et al.(2002) |
Sum Green Index(SG) |
SG=Average of R500 till R600 |
Gamon et al .(1999) |
Structure Insensitive Pigment Index(SIPI) |
SIPI=(R800-R445)/(R800+R680) |
Penuelas et al.(1995) |
Simple Ratio(SR) |
SR=R520/R500 |
Zarco-Tejada et al.(2012) |
Simple Ratio Pigment Index(SRPI) |
SRPI=R430/R680 |
Penuelas et al.(1995) |
Transformed Chlorophyll Absorption in Reflectance Index(TCARI) |
TCARI=3×((R700-R670)-0.2×(R700-R550)×(R700/R670)) |
Haboudane et al.(2002) |
Triangular Chlorophyll Index(TCI) |
TCI=1.2×(R700-R550)-1.5×(R670-R550)×SQRT(R700/R670) |
Haboudane D.(2008) |
Triangular Vegetation Index(TVI) |
TVI=0.5×[120×(R750-R550)-200×(R670-R550)] |
Broge et al .(2000) |
Vogelmann Indices(VOG) |
VOG=(R734-R747)/(R715+R726) |
Vogelmann et al.(1993) |
Water Index(WI) |
WI=R900/R970 |
Penuelas et al.(1997) |
Zarco and Miller(ZM) |
ZM=R750/R710 |
Zarco-Tejada et al.(2001) |