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 ad...

‘Hojjat-al-Tafasir’ commentary is a ten volume commentary among Shiite contemporary commentaries. It has been written by an Iranian Persian scientist, Sayyed Abdol Hojjat Balaghi. Seven volumes assigns to commentary and the first two volumes is about general setting of descent of the Quran and its elements and tenth volume also belongs to complementary explanations. Sayyed Abdol Hoj...

Heiko Milde a,∗, Thomas Guckenbiehl b, Andreas Malik c,1, Bernd Neumann a and Peter Struss d a Laboratory for Artificial Intelligence, University of Hamburg, Vogt-Koelln-Str. 30, 22527 Hamburg, Germany E-mail: {milde, neumann}@informatik. uni-hamburg.de b Fraunhofer-Institut IITB, Fraunhoferstr. 1, 76131 Karlsruhe, Germany E-mail: [email protected] c ESG Elektroniksystemund Logistik-GmbH, Germany...

24S Lung Defense, Injury and Repair Mechanisms of lung microvascular injury. Ann New York Acad Sci 1982; 384:319-31 4 Malik AR, van der Zee H. Lung vascular permeability following progressive pulmonary microembolization. J Appi Physiol 1978; 45:590-97 5 Kaplan A?, Silverberg M, Dunn JT, Ghebrehiwet B. In: Kushner I, Volankis JE, Gewurz H, eds, C-reactive protein and the plasma protein response ...

Image data restoration by diffusion equation is now a well established approach since the pioneering work of Perona and Malik (Perona & Malik, 1990). Originally, image diffusion consists in a convolution by a Gaussian kernel which introduces a scale dimension related to the standard deviation of the Gaussian kernel t 2 = σ . This convolution is equivalent to solve the following linear diffusion...

We study a time-delay regularization of the anisotropic diffusion model for image denoising of Perona and Malik [IEEE Trans. Pattern Anal. Mach. Intell 12 (1990) 629–639], which has been proposed by Nitzberg and Shiota [IEEE Trans. Pattern Anal. Mach. Intell 14 (1998) 826–835]. In the two-dimensional case, we show the convergence of a numerical approximation and the existence of a weak solution...

Among various kinds of image denoising methods, the Perona–Malik model is a representative Partial Differential Equation based (PDE-based) algorithm which effectively removes the noise as well as having edge enhancement simultaneously through anisotropic diffusion controlled by the diffusion coefficient. However, the unstable behavior of the Perona–Malik model introduces staircasing artifacts i...

I enjoyed reading the article by Malik et al titled ‘Efficacy of sutureless and glue-free limbal conjunctival auto-graft for primary pterygium surgery’ published in the Nepalese Journal of Ophthalmology (Malik et al, 2012). The authors highlighted an important technique of primary pterygium surgery without application of sutures or bio-fibrin glue. This is, of course, a very challenging procedu...