Based on Lifting Scheme Improve Double Adaptive Wavelet Transforms

Because of the better temporal and frequency properties, the wavelet linear approximation can approximate smooth signals very efficiently with the constant size filter. However, standard wavelet linear approximation techniques cannot achieve similar results for signal which are not smooth. Based on the adaptive lifting scheme with perfect reconstruction presented by G. Piella and the authorpsilas previous research, this paper proposed the improved double adaptive wavelet transform which can achieve the better linear approximation for the piecewise continuous signals.