The variational methodsfor multiplicative noise removal have been received considerable attention in recent years. The traditional models based only on gradient result in staircase effect usually. So a hybrid high-ord...The variational methodsfor multiplicative noise removal have been received considerable attention in recent years. The traditional models based only on gradient result in staircase effect usually. So a hybrid high-order model based on gradient and Laplacian is proposed for multiplicative denoising. In order to avoid the shortcomings of explicit scheme in stability, the Gauss- seidel semi- implicit scheme is adopted.Experiments show that the proposed model can avoid staircase effect during removing multiplicative noise while preserving or enhancing edges.展开更多
文摘The variational methodsfor multiplicative noise removal have been received considerable attention in recent years. The traditional models based only on gradient result in staircase effect usually. So a hybrid high-order model based on gradient and Laplacian is proposed for multiplicative denoising. In order to avoid the shortcomings of explicit scheme in stability, the Gauss- seidel semi- implicit scheme is adopted.Experiments show that the proposed model can avoid staircase effect during removing multiplicative noise while preserving or enhancing edges.
