FCM (fuzzy c-means algorithm) based on Euclidean distance function converges to a local minimum of the objective function, which can only be used to detect spherical structural clusters. The added fuzzy covariance matrices in their distance measure were not directly derived from the objective function. In this paper, an improved Normalized Clustering Algorithm Based on Mahalanobis distance by t...

An image can be compressed if, and only if, its pixels are correlated. This is mentioned many times in Chapter 4, as well as the fact that any image compression method results in decorrelating the pixels. As a result, any transformation that decorrelates values can be the basis for an image compression method. Several such transformations are described in Section 4.4. The topic of this document...

The goal of this paper is to propose an improved competitive Hebbian learning for mode detection using a new activation function, to overcome its sensitivity to local irregularities in pattern distribution. This method is involved with an unsupervised clustering approach divided into four processing stages. It begins by the estimation of the probability density function, followed by a competiti...

INTRODUCTION Data analysis in Diffusion Tensor Magnetic Resonance Imaging (DT-MRI) is highly sophisticated and can be thought of as a “pipeline” of closely connected processing and modeling steps. Cluster analysis of the orientation of the fiber direction and fiber tracts is typically carried on the major eigenvector. This type of cluster analysis is also important in reducing sorting bias in t...

The performance of edge detection often relies on its ability to correctly determine the dissimilarities of connected pixels. For grayscale images, the dissimilarity of two pixels is estimated by a scalar difference of their intensities and for color images, this is done by using the vector difference (color distance) of the three-color components. The Euclidean distance in the RGB color space ...

An approach for tracking lines along temporal image sequences is presented. Three independent Kalman filters are used in the process, taking either Mahalanobis normalised distances or geometric constraints as measures of the matching degree.

asian citrus psyllid, diaphorina citri kuwayama, is an important pest of citrus that transmits the bacterial pathogens responsible for citrus greening disease, also called huanglongbing. the aim of the current study was to investigate the shape variations of the forewing among the iranian geographic populations of d. citri, as well as one population from pakistan. the adult psyllids used in thi...

Abstract Methadone Flexi Dispensing Service (MFlex) has been officially re-branded from 1Malaysia (M1M) since 2nd January 2019. Patients under MFlex are frequently taking their methadone according to a plan provided by pharmacist at public clinic. From the dose monitoring taken annually, pharmacists can predict critical patients based on high monthly increases. However, current system is writte...