I know how to achieve the gooey effect by css attribute blur and contrast.
Then I find this blog (https://css-tricks.com/gooey-effect),but I don’t understand how did you get this matrix [1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7].Can you explain the calculation process?
thx.