Coverted a grayscale image to binary, but....

I have a `grayscale` image which I have converted to `binary`. But, when I `imwrite` it, I don't get a `binary` image. That is, an image with two values (i.e; 0,1), why is that?

Thanks.

Answer 1

[ag]

Hi Med,

I understand that you are facing issues while trying to save a binarized image.

Unfortunately, I am not able to reproduce the issue on my end. Please try the below code snippet to see if it resolves the issue:

I = imread('image.png');
BW = imbinarize(I); % imbinarize generates a matrix with values 0 and 1 as per the Otsu threshold for your image
imwrite(BW, "BinaryImage.png"); % saves the binary image in the cwd

For more details, please refer to the following MathWorks documentation:

• imread - https://www.mathworks.com/help/matlab/ref/imread.html
• imbinarize - https://www.mathworks.com/help/images/ref/imbinarize.html
• imwrite - https://www.mathworks.com/help/matlab/ref/imwrite.html

Hope this helps!