I have multispectral image of [ 8225,8850,6]. How to read image and i need to seperate bands for analysis?
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Nagaraj rajendiran on 1 Apr 2021
I have multispectral image of dimension 8225*8850*6. kindly suggest me how to read that image in matlab and view it?( i tried imread and imshow -not works). also i need to seperate the bands for calculating NDWI. kindly suggest me to do this task.
More Answers (1)
Subhadeep Koley on 8 Apr 2021
For visualization of individual pixel spectra / hyperspectral band image you can use the interactive hyperspetralViewer App. e.g.
% Read the data
cube = imread('data3.tif');
% Launch hyperspectral viewer
You can also use spectralIndices(_) function to calculate MNDWI. However, to calculate indices with this function, you need construct a hypercube object with the TIF file and corresponding center wavelength for each band images. e.g.
% Construct the hypercube object
hCube = hypercube('data3.tif', wavelength); % Here wavelength is a C-element vector. C is the number of bands
% Calculate MNDWI image
C = spectralIndices(hCube, 'mndwi');
mndwiImg = C.IndexImage;
axis image off