The successful application of univariate morphological operators on several domains, along
with the increasing need for processing the plethora of available multivalued images, have …

Mathematical Morphology allows for the analysis and processing of geometrical structures
using techniques based on the fields of set theory, lattice theory, topology, and random …

Three different approaches to colour texture analysis are tested on the classification of
images from the VisTex and Outex databases. All the methods tested are based on …

Retinal exudates are a characteristic feature of many retinal diseases such as Diabetic
Retinopathy. We address the development of a method to quantitatively diagnose these …

The location of the optic disc is of critical importance in retinal image analysis. In this work
we improve on an approach introduced by Mendels, Heneghan and Thiran (1999) which …

The extension of mathematical morphology operators to multi-valued functions, and in
particular to colour images, is neither direct nor general. In this paper, a generalisation of …

Abstract Representations of the RGB space in terms of 3D-polar coordinates (hue, saturation
and brightness) are often used in image analysis. The literature describes a large number of …

In this paper, a novel approach to the problem of impulsive noise removal in color digital
images is presented. The described switching filter is based on the rank weighted …

A cylindrical coordinate colour space (lightness, saturation/chroma, hue) is derived from an
opponent colour space in the RGB space. It is shown how cylindrical coordinate colour …

Diabetic Retinopathy is a severe and widely spread eye disease which can be regarded as
manifestation of diabetes on the retina. Screening to detect retinopathy disease can lead to …