Blurring and enhancing

A direct and easy way to implement enhance and blur operators using lifting is to modify the wavelet coefficients ($\gamma$) after the in-place transform. This modification consists in multiplication by factor $\beta^j$, where $j$ is the current level in the wavelet transform. The initial value of $\beta$ sets the type of operation done to the original image. If $\beta<1$, then the result is blurred. If $\beta>1$, then the result is enhanced.