Splitting Manhua & Manhwa

[kucingkembar]

the real case probably like this
   
there 3 parts, top, middle, bottom, split by white space,
but the problem is that the white space is not horizontally straight

[Pedroski55]

I thought you said you wanted the picture cut along the red line.

That looks like these images below.

If that is not what you wanted, why is the red line there?        

[kucingkembar]

I thought you said you wanted the picture cut along the red line.

That looks like these images below.

If that is not what you wanted, why is the red line there?

I tried to split this image by whitespace (marked by the red line) using python

i add red line using ms-paint to represent where you should cut, the red arrow is not exist edited too