Image de-noising model of combining Curvelet and LLT model
Jiahong Yang · Computer Engineering and Applications Journal · 2010
Curvelet is able to remove noise thoroughly,but the staircase effect is easily brought about.Smooth regions are protected well and the staircase is not produced by four-order partial differential equation LLT model.A new model based on Curvelet and fourth-order PDE is proposed by combining Curvelet and LLT model with weight function λ.The experiment results have demonstrated that the new model can preserve the advantages of Curvelet and LLT,at the same time,the de-noising rate and visual effect are superior to both of them.