color array to grayscale, images

I have two jpg images that I need to store as matrices of doubles then convert their color arrays into grayscale matrices. how would I do that?

*I attached the photos in a zip file

Answer 1

[Subhadeep Koley]

% Read the image
img1 = imread('photo1.jpg');

% Convert it to double
img1Double = im2double(img1);

% Convert from RGB to grayscale
img1Gray = rgb2gray(img1);

% Display the results
figure
imshowpair(img1, img1Gray, 'montage')

You can do the same for 'photo2.jpg'