2 Dimensional image histogram

I want to make a 2 dimensional histogram between the original image and its average mask, can anyone help me

[Image Analyst]

What is an "average mask"? And what do the two axes represent? Do you mean the gray level cooccurrence matrix?

[hend]

it's a histogram of the image gray level and its local average on x and y axes respectively. which used in computing the 2D otsu's method like this paper

Answer 1

[Image Analyst]

Try the attached code. It's about all I have time for but it will get you started.