MATLAB: Hi! I’ve converted a grayscale img to binary using im2bw() now i wanna do the opposite i.e convert the binary image to a grayscale image. How to do that

binarytograyscalegrayscaletobinaryimageprocessing

A=imread('Color-Meaning-Gray-Feature-Image-1024x831.jpg');
A=im2bw(A);
figure,imshow(A);
% binary-t0-grayscale?

Best Answer

In order to convert back to the original grey scale you could multiply the binarizedImage with the original Image.

Walter Roberson and Image analyst do a better job in explaining the same in this link

https://www.mathworks.com/matlabcentral/answers/285221-how-to-convert-the-binarized-image-to-the-original-gray-image

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MATLAB: Overlay binary image on RGB image

Is this?

RGB_image=imread('image_test.jpg');
subplot(311);imshow(RGB_image);
bw_image=im2bw(rgb2gray(RGB_image));
subplot(312);imshow(bw_image);
result=imfuse(RGB_image,bw_image);
subplot(313);imshow(result);

Detail documentation here

MATLAB: Gray2rgb conversion

temp = YourGrayImage;
if isfloat(temp)
  temp = im2uint8(temp);
end
ColorImage = ind2rgb(temp, TheColorMapToUse);

Best Answer

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MATLAB: Overlay binary image on RGB image

MATLAB: Gray2rgb conversion

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