NPtool
swMATH ID:  6855 
Software Authors:  Landi, Germana; Piccolomini, Elena Loli 
Description:  NPtool: a MATLAB software for nonnegative image restoration with Newton projection methods Several image restoration applications require the solution of nonnegatively constrained minimization problems whose objective function is typically constituted by the sum of a data fit function and a regularization function. Newton projection methods are very attractive because of their fast convergence, but they need an efficient implementation to avoid time consuming iterations. In this paper we present NPTool, a set of Matlab functions implementing Newton projection methods for image denoising and deblurring applications. They are specifically thought for two different data fit functions, the Least Squares function and the KullbackLeibler divergence, and two regularization functions, Tikhonov and Total Variation, giving the opportunity of solving a large variety of restoration problems. The package is easily extensible to other linear or nonlinear data fit and regularization functions. Some examples of its use are included in the package and shown in this paper. 
Homepage:  http://www.dm.unibo.it/~landig/NPTool/NPTool.html 
Dependencies:  Matlab 
Keywords:  Matlab software; image restoration; regularization; Newton projection methods; constrained optimization 
Related Software:  RestoreTools; RecPF; Matlab; NESTA; BM3D; PNKHB; GitHub; ADMMSoftmax; AdaGrad; jInv; MNIST; LBFGSB; KELLEY; NNLS; SPGL1; PDCO; TwIST; AIRY 
Cited in:  9 Documents 
Standard Articles
1 Publication describing the Software, including 1 Publication in zbMATH  Year 

NPtool: a MATLAB software for nonnegative image restoration with Newton projection methods. Zbl 1262.65033 Landi, Germana; Piccolomini, Elena Loli 
2013

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Cited by 15 Authors
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Cited in 8 Serials
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