A Noise Removal Model Combining TV and a Fourth-order PDE filter
Jichao Wang · 2008
A combined model based PDE is proposed here,which can be used in image denoising.It combines the Total Variation(TV)filter and a fourth-order PDE filter by a weighting function τ.TV filter is able to preserve edges and the fourth-order PDE filter can overcome the staircase effect in smooth regions.The combined model preserve the advantages of both.Numerical experiments show that the combined model has more improvement on signal-noise-ratio(SNR)than using only one filter.