how to change image size inside imread in matlab

To change the size of an image when reading it using imread function in MATLAB, you can use the imresize function along with imread.

Here's an example:

main.m
% Read the image
img = imread('example.jpg');

% Resize the image to 50% of its original size
img_resized = imresize(img, 0.5);

% Display the original and resized images side by side
imshowpair(img, img_resized, 'montage');
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In this example, the imresize function resizes the image img to 50% of its original size, and stores the result in img_resized.

You can adjust the resizing factor to the desired size that you want.

Note that resizing an image can affect its quality and introduce artifacts, so be careful when resizing images.