36 lines
947 B
Matlab
36 lines
947 B
Matlab
function results = conductPCA(od_imgs)
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%% computePCAfromImages
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% Author: Karthik
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% Date: 2025-09-12
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% Version: 1.0
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%
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% Description:
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% Performs PCA on optical density images and returns results in a struct.
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%
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% Inputs:
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% od_imgs - cell array of OD images
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%
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% Outputs:
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% pcaResults - struct containing PCA outputs:
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% .coeff - PCA coefficients (principal components)
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% .score - PCA scores for each image
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% .explained - variance explained by each PC
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% .Nx, .Ny - dimensions of individual images
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%
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% Notes:
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% Optional notes, references.
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allImgs3D = cat(3, od_imgs{:});
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[Nx, Ny] = size(allImgs3D(:,:,1));
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Xall = reshape(allImgs3D, [], numel(od_imgs))';
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[coeff, score, ~, ~, explained] = pca(Xall);
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results = struct( ...
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'coeff', coeff, ...
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'score', score, ...
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'explained', explained, ...
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'Nx', Nx, ...
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'Ny', Ny ...
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);
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end
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