how do we calculate vegetation using ndvi------can u plz provide me with the code
1 view (last 30 days)
Show older comments
ndvi
3 Comments
Answers (2)
Cyrus
on 25 Dec 2016
Edited: Cyrus
on 25 Dec 2016
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
1 Comment
sajeela khan
on 27 Jan 2018
how can we find the NDVI using miltispectral image
1 Comment
Amit Bhasin
on 20 Feb 2019
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
See Also
Categories
Find more on Biomedical Imaging in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!