I can't receive output using imshow() after imbinarize() function in my Image Processing job.

Hi everybody!

I read 2 images to the workspace and prior to applying XOR operator, I'm trying to Binarize the input images using imbinarize() function, however, I receive an error using imshow() to display. I appreciate any assistance in resolving the issue.

Here is the code:

I1 = imread('D:/i_p_pics/Bird_1.jpg');
I2 = imread('D:/i_p_pics/Bird_2.jpg');

BW1 = imbinarize(I1);
BW2 = imbinarize(I2);

output = xor(BW1,BW2);

subplot(321); imshow(I1); title('First Image');
subplot(322); imshow(I2); title('Second Image');

subplot(323); imshow(BW1); title('First Binary Image');
subplot(324); imshow(BW2); title('Second Binary Image');

subplot(325); imshow(output); title('XORED Image');

Here is the error:

common_args.CData = validateCData(common_args.CData,image_type);

Error in images.internal.imageDisplayParseInputs (line 78)
common_args = images.internal.imageDisplayValidateParams(common_args);

Error in imshow (line 245)
    images.internal.imageDisplayParseInputs({'Parent','Border','Reduce'},preparsed_varargin{:});

Error in oh (line 19)
subplot(323); imshow(BW1); title('First Binary Image');

Answer 1

[Image Analyst]

Try this:

I1 = imread('Bird_1.jpg');
I2 = imread('Bird_2.jpg');
% The BW are 3-D images because I1 and I2 were RGB.
% Process only the blue channel, which has the most contrast.
BW1 = imbinarize(I1(:, :, 3));
BW2 = imbinarize(I2(:, :, 3));
output = xor(BW1,BW2);
subplot(321); imshow(I1); title('First Image');
subplot(322); imshow(I2); title('Second Image');
subplot(323); imshow(BW1); title('First Binary Image');
subplot(324); imshow(BW2); title('Second Binary Image');
subplot(325); imshow(output); title('XORED Image');

[Arash]

Great! Thank you.

[Image Analyst]

Arash, the original problem was that imbinarize will binarize each plane it it's an RGB image, which is what you werer giving it. So it's a 3-D logical image, which imshow doesn't handle.

If it answered your question, the usual thing to do is to click the "Accept this Answer" link 🙂, unless you want to wait for better ones.

Answer 2

[dhivya]

hello,everyone i want 2 shares from this code and at the last line i use xor oprtion to reteive the original binary image.But i cannot retrieve it.Anyone pls suggest me quickly.(i take one binary image and generate two shares,after perfom xor opeartion restore original binary image)
S = imread('text input.png');

meven = [0 0 0;         0 1 1;         1 0 1;         1 1 0];
modd = [0 0 1;        0 1 0;        1 0 0;        1 1 1];
no = 1;
y = zeros(size(S));
R = zeros(size(S));
l = zeros(size(S));
for i = 1:size(S,1)
    for j = 1:size(S,2)
        if (S(i, j) == 0)
            r = rand([no,2^no-1]);
            disp(r)
            ro = round(r);
            ro = ro+1;
            R(i,j) = meven(ro,1);
            l(i,j) = meven(ro,2);
        else
            r = rand([no,2^no-1]);
            disp(r)
            ro = round(r);
            ro = ro+1;
            R(i,j) = modd(ro,1);
            l(i,j) = modd(ro,2);
        end
        y(i,j) = S(i,j);
        c=xor(R,l);
       
    end
end
       

[Image Analyst]

@dhivya how is this an answer to @Arash's question about XORing two bird images? Did you mean to post this as your own new question instead of an Answer to this question?