scholarly journals Robust fitting of multilinear models with application to blind multiuser receivers: iterative weighted median filtering approach

Author(s):  
S.A. Vorobyov ◽  
Yue Rong ◽  
N.D. Sidiropoulos ◽  
A.B. Gershman
Author(s):  
J. K. Mandal ◽  
Somnath Mukhopadhyay

This chapter deals with a novel approach which aims at detection and filtering of impulses in digital images through unsupervised classification of pixels. This approach coagulates directional weighted median filtering with unsupervised pixel classification based adaptive window selection toward detection and filtering of impulses in digital images. K-means based clustering algorithm has been utilized to detect the noisy pixels based adaptive window selection to restore the impulses. Adaptive median filtering approach has been proposed to obtain best possible restoration results. Results demonstrating the effectiveness of the proposed technique are provided for numeric intensity values described in terms of feature vectors. Various benchmark digital images are used to show the restoration results in terms of PSNR (dB) and visual effects which conform better restoration of images through proposed technique.


Author(s):  
Amit Khan ◽  
Dipankar Majumdar

In the last few decades huge amounts and diversified work has been witnessed in the domain of de-noising of binary images through the evolution of the classical techniques. These principally include analytical techniques and approaches. Although the scheme was working well, the principal drawback of these classical and analytical techniques are that the information regarding the noise characteristics is essential beforehand. In addition to that, time complexity of analytical works amounts to beyond practical applicability. Consequently, most of the recent works are based on heuristic-based techniques conceding to approximate solutions rather than the best ones. In this chapter, the authors propose a solution using an iterative neural network that applies iterative spatial filtering technology with critically varied size of the computation window. With critical variation of the window size, the authors are able to show noted acceleration in the filtering approach (i.e., obtaining better quality filtration with lesser number of iterations).


2017 ◽  
Vol 3 (6) ◽  
pp. 067002
Author(s):  
D O’Connell ◽  
D H Thomas ◽  
T H Dou ◽  
E Aliotta ◽  
J H Lewis ◽  
...  

2006 ◽  
Vol 54 (2) ◽  
pp. 636-650 ◽  
Author(s):  
K.E. Barner ◽  
T.C. Aysal

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