MATLAB: Image processing, dimension reduction

dimension reductionimage processingpcaStatistics and Machine Learning Toolbox

if i have number of images (multi spectral images for the same scene), and i want to reduce the dimensional of this images by any dimension reduction techniques where in the result i get one reducing image for 200 as example. how can i do this task? thank you.

Best Answer

See my attached demo for pca. It should be easy for you to adapt it to take any number of spectral bands instead of the 3 visible color (RGB) bands I took. If you want just one single image that represents most of the variation, take the principal components #1 image.

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MATLAB: Montage of 3 image

See montage.

An example:

I = imread('peppers.png');
R = I(:,:,1);
G = I(:,:,2);
B = I(:,:,3);
J = rgb2gray(I);
K = im2bw(I)*255;
img = cat(4,R,G,B,J,K);
figure;
montage(img,'Size',[1 5]);

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Well, since it says their sizes don't match for stitching together horizontally, what are the numbers of rows for all these: A Afill B Bfill C D Dfill E F G H I J K L M...

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MATLAB: Montage of 3 image

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