how to change color of mask in matlab

To change the color of a mask in MATLAB, you can use the function imshow in combination with the colormap function. The imshow function displays an image, and the colormap function can be used to specify a color map for an indexed image.

Here's an example code snippet that demonstrates how to change the color of a binary mask in MATLAB:

main.m
% Load the mask as a binary image
mask = imread('mask.png');
mask = imbinarize(mask); % Convert to binary

% Display the mask with a specific color
color = [0, 0, 255]; % Blue color
imshow(mask, 'Colormap', color);
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In this example, we load a binary mask from a file called mask.png and convert it to a binary image using the imbinarize function. Then, we specify a color using an RGB triple that represents blue color. Finally, we display the mask using the imshow function, and set the Colormap option to our chosen color.

Note that if you have a grayscale mask, you can convert it to an indexed image using the ind2rgb function before using the imshow function with a specified color map.