Ramp preserving Perona-Malik model - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue SIGNAL PROCESSING Année : 2010

Ramp preserving Perona-Malik model

Qiang Chen
  • Fonction : Auteur
Quan Sen Sun
  • Fonction : Auteur
de Shen Xia
  • Fonction : Auteur

Résumé

The Perona-Malik (PM) model, a classical anisotropic diffusion, can preserve edges while removing the noise. However, the defect of traditional PM model is tending to contain the staircase effect in the processed image. For this reason, a novel ramp preserving Perona-Malik (RPPM) model based on a new edge indicator is presented. In the RPPM model, the diffusion coefficient of the PM model is adaptively determined to introduce following property: isotropic diffusion in flat and ramp regions to prevent the staircase effect and anisotropic diffusion in edge regions to preserve edges. Comparative results on synthetic and real image denoising demonstrate that our model can preserve important structures, such as edges and ramps, while avoiding the speckles and the complex numerical implementation arising from high-order partial differential equations (PDEs).
Fichier non déposé

Dates et versions

hal-02949478 , version 1 (25-09-2020)

Identifiants

Citer

Qiang Chen, Philippe Montesinos, Quan Sen Sun, de Shen Xia. Ramp preserving Perona-Malik model. SIGNAL PROCESSING, 2010, 90 (6), pp.1963-1975. ⟨10.1016/j.sigpro.2009.12.015⟩. ⟨hal-02949478⟩
31 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More