Choice of Regularization Parameter in Constrained Total Variational Image Restoration Model

2014 ◽  
Author(s):  
Zhibin Chen ◽  
Man Wang ◽  
Youwei Wen ◽  
Zhining Zhu
Keyword(s):  
Image Restoration ◽  
Regularization Parameter ◽  
Variational Image ◽  
Restoration Model ◽  
Variational Image Restoration

Variational Image Restoration with Constraints on Noise Whiteness

2014 ◽  
Vol 53 (1) ◽  
pp. 61-77 ◽  
Author(s):  
Alessandro Lanza ◽  
Serena Morigi ◽  
Fiorella Sgallari
Keyword(s):  
Image Restoration ◽  
Variational Image ◽  
Variational Image Restoration

An Adaptive Variational PDE Based Image Restoration Model Using Hopfield Neural Network

2011 ◽  
Vol 48-49 ◽  
pp. 174-178
Author(s):  
Wei Sun ◽  
Sheng Nan Liu
Keyword(s):  
Neural Network ◽  
Image Restoration ◽  
Regularization Parameter ◽  
Signal To Noise Ratio ◽  
Hopfield Neural Network ◽  
Adaptive Regularization ◽  
Proposed Model ◽  
Degraded Image ◽  
Restoration Problem ◽  
Restoration Model

An adaptive variational partial differential equation (PDE) based aproach for restoration of gray level images degraded by a known shift-invariant blur function and additive noise is presented. The restoration problem of a degraded image is solved by minimizing this model, and this minimizing problem is realized by using Hopfield neural network. In the proposed image restoration model, an adaptive regularization parameter is developed instead of the constant regularization parameter used in previous PDE model. The value of the adaptive regularization parameter changes according to different regions of the image to remove noises and preserve edge better. Several computer simulation results show that the image restoration results of the proposed model both look better and have better SNR (Signal to Noise Ratio) than the previous variational PDE based model.

A variational image restoration with spatially varying noise

2008 ◽  
Author(s):  
Zheng Bao ◽  
Hua Bai ◽  
Ruihua Liu ◽  
Chaomin Shen
Keyword(s):  
Image Restoration ◽  
Variational Image ◽  
Spatially Varying ◽  
Variational Image Restoration
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