This paper presents a segmentation scheme for images containing both smooth regions and textures. It is based on a vector-valued anisotropic diffusion on a combined color/Gabor feature space, followed by a hierarchical segmentation using dynamics of multiscale ’generalized gradient’ watersheds. The proposed method gives good segmentation results and is shown to be more effective than its counte...

There exists a large number of techniques for content-aware smoothing. Despite its simplicity, the PeronaMalik Anisotropic Diffusion method is among the most employed ones. In this work we study this method in detail and propose a generalization of its diffusion scheme using restricted dissimilarity functions to measure the intensity differences between neighbouring pixels. This generalization ...

-Calibration of the spatial sensitivity functions of coil arrays is a crucial element in parallel magnetic resonance imaging (PMRI).In order to overcome the sensitivity miscalibration errors introduced by pre-scan calibration method and decrease the total examination time, a new self-calibrating method for estimating the coil sensitivity profiles was proposed in the paper. From a fullysampled c...

In this paper, we present a new method for removing texture in color images using a smoothing rotating filter. From this filter, a bank of smoothed images provides pixel signals for each channel image able to classify a pixel belonging to a texture region. We apply this classification in each channel image in order to compute two directions for the anisotropic diffusion. Then, we introduce a ne...

We present a novel combination of classic anisotropic diffusion filters, a-priori estimated orientation fields and a locally adaptive contrast enhancement step for improving the quality of fingerprint images. By applying our new approach to low-quality images of the FVC2004 fingerprint databases, we are able to show its equivalency to state-of-the-art enhancement methods for fingerprints. Linea...

In this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. The governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by Sherief et al. [1] are considered as a special case. It is found that three types of...

In this paper, we present a new image regularization method using a rotating smoothing filter. The novelty of this approach resides in the mixing of ideas coming both from pixel classification which determines roughly if a pixel belongs to a homogenous region or an edge and an anisotropic perceptual edge detector which computes two precise diffusion directions. These directions are used by an a...

1. B.Yoo and T. Nishimura , “A Study of Ultrasound Image Enhancement Using Adaptive Speckle Reducing Anisotropic Diffusion,” presented at IEEE International Symposium on Industrial Electronics ,pp.: 581-585,2009. 2. Y. Yu and S.T. Acton, “Speckle reducing anisotropic diffusion, ”IEEE Trans. Image Process., vol. 11, no.11,pp. 1260-1270,Nov. 2002. 3. S. T.Acton, “Deconvolutional Speckle Reducing ...

We demonstrate a method for fully characterizing diffuse transport of light in a statistically anisotropic opaque material. Our technique provides a simple means of determining all parameters governing anisotropic diffusion. Anisotropy in the diffusion constant, the mean free path, and the extrapolation length are, for the first time, determined independently. These results show that the anisot...