how do we calculate vegetation using ndvi------can u plz provide me with the code

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BUGATHA VARALAKSHMI
BUGATHA VARALAKSHMI 2016-12-25
评论： yun li 2021-3-11
ndvi
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回答（2 个）

Cyrus
Cyrus 2016-12-25
编辑：Cyrus 2016-12-25
if it is landsat8 image:
Formula: NDVI = (NIR -R) / (NIR + R)
File_Path = 'path\'; %%keep the \
File_Name = 'LC80292015263LGN00_B';
Band_Number = '3';
Full_File_Name = strcat(File_Path, File_Name, Band_Number, '.TIF');
[G, ~] = geotiffread(Full_File_Name);
clearvars Band_Number Full_File_Name
Band_Number = '4';
Full_File_Name = strcat(File_Path, File_Name, Band_Number, '.TIF');
[R, ~] = geotiffread(Full_File_Name);
clearvars Band_Number Full_File_Name
Band_Number = '5';
Full_File_Name = strcat(File_Path, File_Name, Band_Number, '.TIF');
[NIR, ~] = geotiffread(Full_File_Name);
clearvars File_Path File_Name Band_Number Full_File_Name
G_heq = histeq(G);
R_heq = histeq(R);
NIR_heq = histeq(NIR);
NIR = double(NIR_heq);
R = double(R_heq);
G = double(G_heq);
NDVI = (NIR -R) ./ (NIR + R);
figure(), imshow(NDVI, []), title('NDVI');
colormap(jet);
colorbar;
impixelinfo
sajeela khan
sajeela khan 2018-1-27
how can we find the NDVI using miltispectral image
  1 个评论
Amit Bhasin
Amit Bhasin 2019-2-20
Hey Cyrus,
Thank for the answer. What if I have images collected (multispecratl images; 5 bands; R,G,B, NIR, Red-edge) from a drone?
Thanks

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