I found the following integer transform, where all variables $x_0,x _1$ and $x_2$ are integers:
$ y_0=x_1+floor(\frac{1}{4}(x_0+2x_1+x_2))\\ y_1=x_2-x_1\\ y_2=x_0-x_1 $
The inverse transform is following:
$ x_0=s+y_2\\ x_1=s\\ x_2=s+y_1\\ $
where $s=y_0-floor(\frac{1}{4}(y_1+y_2))$
How can modify the transform to have $y_1$ or $y_2$ to be equal with $floor(\frac{x_2-x_1}{2})$ or $floor(\frac{x_0-x_1}{2})$?
