Merging parametric active contours within homogeneous image regions for MRI-based lung segmentation

Universality in the merging dynamics of parametric active contours: a study in MRI-based lung segmentation

Measurement of lung ventilation is one of the most reliable techniques in diagnosing pulmonary diseases. The time-consuming and bias-prone traditional methods using hyperpolarized H3He and 1H magnetic resonance imageries have recently been improved by an automated technique based on ‘multiple active contour evolution’. This method involves a simultaneous evolution of multiple initial conditions...

MRI ventilation analysis by merging parametric active contours

Homogeneous Region Merging Approach for Image Segmentation Preserving Semantic Object Contours

Morphological image segmentation is an essential tool for various image analysis tasks. In this paper, we propose two successive region-merging algorithms that mainly aim to represent homogeneous objects simply and clearly. First, we define a marker cluster and extract markers having similar intensity values from each marker cluster. After initial segmentation using the markers, perceptually in...

Morphological Active Contours for Image Segmentation

In this paper we introduce a new method of front propagation for image segmentation based on geodesic active contours. We propose a morphological active contour as another implementation of theory of curve evolution. This method uses a binary image morphology combined with substitutions of 3x3 pixel configurations, which represent an approximation of the curve evolution related to curvature, in...

Localized Patch-Based Fuzzy Active Contours for Image Segmentation

This paper presents a novel fuzzy region-based active contour model for image segmentation. By incorporating local patch-energy functional along each pixel of the evolving curve into the fuzziness of the energy, we construct a patch-based energy function without the regurgitation term. Its purpose is not only to make the active contour evolve very stably without the periodical initialization du...