Point set registration is to determine correspondences between two different point sets, then recover the spatial transformation between them. Many current methods, become extremely slow as the cardinality of the point set increases; making them impractical for large point sets. In this paper, we propose a bi-stage method called bi-GMMTPS, based on Gaussian Mixture Models and Thin-Plate Splines...

The use of a 3D model helps to diagnosis and accurately locate a disease where it is neither available, nor can be exactly measured in a 2D image. Therefore, highly accurate software for a 3D model of vessel is required for an accurate diagnosis of patients. We have generated standard vessel because the shape of the arterial is different for each individual vessel, where the standard vessel can...

In this study, we develop a novel nonlinear metric learning method to improve biomarker identification for Alzheimer’s Disease (AD) and Mild Cognitive Impairment (MCI). Formulated under a constrained optimization framework, the proposed method learns a smooth nonlinear feature space transformation that makes the mapped data more linearly separable for SVMs. The thin-plate spline (TPS) is chosen...

Background: With leading morbidity among malignant tumors in otorhinolaryngology, Nasopharyngeal carcinoma (NPC) is one of the most frequent China. Objectives: This study aimed to help radiotherapy doctors recognize and segment nasopharyngeal organs at risk NPC make a plan. Methods: The authors used B-spline mutual information transform, register, fuse Chinese Visible Human images with voluntee...

This paper presents a new method for image segmentation by deforming the object shape in a template. The deformation process is controlled using a thin-plate spline kernel based regularization method. The proposed method is especially useful for 2D-based segmentation of 3D medical images by treating segmented slices as templates for their neighboring unsegmented slices. We have applied the prop...

The Casimir force is calculated between Au thin films that are described by a Drude model with a frequency dependent damping function. The model parameters are obtained from available experimental data for Au thin films. Two cases are considered; annealed and nonannealed films that have a different damping function. Compared with the calculations using a Drude model with a constant damping para...

Zusammenfassung Die sog elastische Registrierung hat sich zu einem wichtigen Zweig der medizinischen Bildanalyse entwickelt In diesem Bei trag wird ein weit verbreiteter Ansatz der interpolierende Thin Plate Splines verwendet hinsichtlich seiner Bez uge zur linearen Elastizit ats theorie untersucht die kleine Deformationen voraussetzt Es wird ein Kriterium vorgestellt das bei Bilddeformationen ...

An effective compression artifacts removal algorithm is proposed based on thin-plate spline interpolation and the theory of projections onto convex sets (POCS). The thin-plate spline model is used to model the luminance in the flat regions of the image. Adaptive projections are used to suppress the compression artifacts in the spatially active image regions. The algorithm includes block mapping...

The analysis of mandibular growth changes around the pubertal spurt in humans has several important implications for the diagnosis and orthopedic correction of skeletal disharmonies. The purpose of this study was to evaluate mandibular shape and size growth changes around the pubertal spurt in a longitudinal sample of subjects with normal occlusion by means of an appropriate morphometric techni...

Image registration (IR) aims to geometrically match one image to another. It is extensivelyused in many imaging applications. Among many existing IR methods, one widely used group ofmethods are feature-based. By a feature-based method, a number of relevant image features arefirst extracted from the two images, respectively, and then a geometric matching transformationis found to...