MATLAB: I have used the code to convert rgb image to binary , need to convert binary back to rgb

binaryImage Processing Toolboximageconversionrgb

RGBi=im2double(imread('autumn.tif'));
imshow(RGBi)
Ii = rgb2gray(RGBi);
imshow(Ii)
bi=imbinarize(Ii);

Best Answer

You cannot convert back from binary to RGB. binary has only one bit of information for each location; RGB has about 24 bits of information for each location.

What you probably want instead is

maskedRGBi = RGBi .* bi(:,:,[1 1 1]);

Related Solutions

MATLAB: I want to change the black background of the image into white.

Try this:

rgbImage = imread('image.png');
subplot(2, 2, 1);
imshow(rgbImage);
mask = all(rgbImage == 0, 3);
% Take the largest blob
mask = bwareafilt(mask, 1);
subplot(2, 2, 2);
imshow(mask);
maskedRgbImage = rgbImage + uint8(255 * repmat(mask, [1, 1, 3]));
subplot(2, 2, 3);
imshow(maskedRgbImage);

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.

Best Answer

Related Solutions

MATLAB: I want to change the black background of the image into white.

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

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