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Convert RGB images to Gray Scale with Principle Component Analysis

version 1.0.0.0 (378 Bytes) by Tyler Coye
Convert RGB to Gray using the function impca(image)

2 Downloads

Updated 16 May 2015

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% This function uses principle component analysis to convert an RGB image
% to a gray scale image.
% Copyrighted by Tyler L. Coye

function [gray] = impca(im)
im = im2double(im);
lab = rgb2lab(im);
f = 0;
wlab = reshape(bsxfun(@times,cat(3,1-f,f/2,f/2),lab),[],3);
[C,S] = pca(wlab);
S = reshape(S,size(lab));
S = S(:,:,1);
gray = (S-min(S(:)))./(max(S(:))-min(S(:)));
end

Cite As

Tyler Coye (2021). Convert RGB images to Gray Scale with Principle Component Analysis (https://www.mathworks.com/matlabcentral/fileexchange/50874-convert-rgb-images-to-gray-scale-with-principle-component-analysis), MATLAB Central File Exchange. Retrieved .

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MATLAB Release Compatibility
Created with R2014b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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