Lifting factorization of wavelet multiresolution analysis

Decomposing the wavelet transform in lifting steps allows a simpler implementation of the transform filters and provides the flexibility necessary to satisfy other requirements, e.g., generating non-linear integer-to-integer wavelet transforms. The paper presents a flow-graph approach to the lifting factorization that gives a better insight to the main features of single-phase and two-phase wavelet transform representations. On this basis, truly loss-less signal compression algorithms using integer wavelet transform can be devised..