cast image data to uint8 in matlab

To cast image data to uint8 in MATLAB, you can use the im2uint8 function. Here's an example of how to do it:

main.m
% Load the image
imageData = imread('image.jpg');

% Cast the image data to uint8
imageDataUint8 = im2uint8(imageData);
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In the above example, imread is used to read the image file into a variable called imageData. Then, im2uint8 is used to cast the image data to uint8, and the result is stored in a new variable called imageDataUint8.

Note that im2uint8 automatically scales the image data to the range [0, 255], which is the range for uint8 data type.