试用软件

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

1 次查看（过去 30 天）

显示更早的评论

BUGATHA VARALAKSHMI 2016-12-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/318122-how-do-we-calculate-vegetation-using-ndvi-can-u-plz-provide-me-with-the-code

评论： yun li 2021-3-11

ndvi

3 个评论
显示 1更早的评论隐藏 1更早的评论

sajeela khan 2018-1-27

can u plz tell me the difference between them LandSat8 RapidEye

Manisha Kumawat 2018-7-28

Can i apply this code on irs Resoursesat images

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Cyrus 2016-12-25

4
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/318122-how-do-we-calculate-vegetation-using-ndvi-can-u-plz-provide-me-with-the-code#answer_248421

编辑：Cyrus 2016-12-25

在 MATLAB Online 中打开

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 个评论
显示 -1更早的评论隐藏 -1更早的评论

yun li 2021-3-11

Excuse me, how to calculate NDVI for an image with multi-band information?

请先登录，再进行评论。

sajeela khan 2018-1-27

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/318122-how-do-we-calculate-vegetation-using-ndvi-can-u-plz-provide-me-with-the-code#answer_302028

how can we find the NDVI using miltispectral image

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

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

请先登录，再进行评论。

请先登录，再回答此问题。

类别

Sciences Biological and Health Sciences Biomedical Imaging

在 Help Center 和 File Exchange 中查找有关 Biomedical Imaging 的更多信息

标签

产品

Image Processing Toolbox

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by

试用软件