How to plot histogram of difference of two images using MATLAB

i would like to calculate difference of two images. Then, histogram of difference of two images. So, when i plot histogram i want to see negative values. But i can't see negative values. So, i think my code is not true. How can i calculate histogram of difference of two images.

My two images are original_result and output_image. And difference of two image is image_of_dif. my result.

Answer 1

[Ridwan Alam]

histogram(image_of_dif)

will plot the histogram showing the distribution of values (both positive and negative differences).

[Mustafa Uysal]

thanks for reply. i tried this.

image_of_dif = (image_of_dif);
h=histogram(image_of_dif);
figure;
plot(h); %plot histogram

and i see that error

Error using plot
Not enough input arguments.

also i see this result. i don't know whether it is true or not

[Ridwan Alam]

histogram() by default plots the histogram, which is what your pic represents. And it shows the negative values as you expected, right?

The h is a histogram object, not an array to plot directly. For more details: https://www.mathworks.com/help/matlab/ref/matlab.graphics.chart.primitive.histogram.html

Please accept the answer if it works for you. Thanks!