How to handle the intersection of the XOR operation-CodePudding

Context

I'm trying to recreate an effect used on photoshop called satin effect, which creates stainy texture by creating a satin texture (or structure) and applying a blur-like effect.

Example :

I think this effect is achieved by using a double shift of the input pattern from which they apply a XOR operation to get the satin pattern (See Image above - Satin Size 0), then I think they apply a gaussian blur while handling the intersection of the XOR operation.

What I've done so far

I created the first part which consist of shifting the pattern of the satin.
Here's the code :
Image Used :

Problem :
But the problem emerge when I try to apply the gaussian blur before the XOR operation (Which can be achieved by adding those two lines of code before the XOR operation :

...

shift1 = cv2.GaussianBlur(shift1, (101,101),0)
shift2 = cv2.GaussianBlur(shift2, (101,101),0)

# XOR Operation
xor_result = ...

And her's what I get :

Vs What I get using Photoshop :

Question

So I think that I'm missing an operation to handle the intersection of those 2 shapes (where we got those weird pixels)
So my question is : What operation do you think we should add in order to handle the intersection of the XOR of these two shapes ?

CodePudding user response：

The fuzzy logic version of the Boolean or operator is the max operator, and that of the and is min.

For XOR, the most logical equivalent is max(x-y, y-x), more efficiently written as abs(x-y). This paper describes two other options, but the absolute difference seems to reproduce the Photoshop effect just fine.

I would thus implement your code as:

xor_result = cv2.absdiff(shift1, shift2)
output = np.minimum(255 - xor_result, apple)