MATLAB: How we can merge mask on RGB image

image analysisimage processingImage Processing ToolboxMATLAB

Suppose I am having original image '1.jpg'- dimensions (605x700x3 uint8) and mask image 'D'-dimensions (255×255 unit 8). How do I showcase mask image on original image?

Best Answer

I don't know what "showcase" means to you, but maybe you mean to mask the RGB image with the binary image. If so, do this:

% Mask the image using bsxfun() function to multiply the mask by each channel individually.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

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MATLAB: Create mask over image

You should not use the variable name input as it shadows a MATLAB built-in function. Use the example code below.

close all; clc;
img = im2double(imread('peppers.png'));
figure; imshow(img);
title('Original RGB image');
mask  = im2double(imread('peppersMask.png')); % Download the mask attached below
figure; imshow(mask);
title('Mask');
if size(mask, 3) == 1 && size(img, 3) > 1
    mask = repmat(mask, [1, 1, size(img, 3)]);
end
CorruptedImage = mask .* img;
Q = mask(:, :, 1);
Red = CorruptedImage(:, :, 1);
Gre = CorruptedImage(:, :, 2);
Blu = CorruptedImage(:, :, 3);
figure; imshow(CorruptedImage);
title('CorruptedImage');
figure; montage(CorruptedImage, 'Size', [1, 3]);
title('R, G, B component of the CorruptedImage');

MATLAB: How can we map binary image on original RGB image

Try this:

% Mask the image.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

where mask is your binary image.

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MATLAB: Create mask over image

MATLAB: How can we map binary image on original RGB image

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