Deflection analysis of a simply supported microbeam subjected to a concentrated load at the middle is investigated on the basis of a shear deformable beam theory and non-classical theory. Effects of shear deformation and small size are taken into consideration by hyperbolic shear deformable beam theory and modified strain gradient theory, respectively. The governing differential equations and c...

Introduction: There is new interest in prospectively knocking out each of the approximately 25000 genes of the adult mouse. Imaging, and in particular MRI, is becoming recognized as a valuable tool for phenotyping the resulting adult mouse lines. As a complement to the adult mouse, there is also a need to phenotype mouse embryos in order to analyze normal embryonic development as well as embryo...

The aim of this work is to automatically extract quantitative parameters from time sequences of 3D images (4D images) suited to heart pathology diagnosis. In this paper, we propose a framework for the reconstruction of the left ventricle motion from 4D images based on 4D deformable surface models. These 4D models are represented as a time sequence of 3D meshes whose deformation are correlated d...

Due to the popularity of computer graphics, 3D games and CG movies, a large number of 3D models have been created. Many of them are freely available on the Internet and can be found in many personal homepages, repositories and even libraries. Though the number of 3D models keeps on increasing, 3D models are time and effort consuming to build. The group of deformable models (or so called animati...

A variety of multiresolution models for arbitrary triangle meshes have been presented in the last years. In order to achieve an interactive visualization, multiresolution models must store and retrieve data efficiently. In this paper, we present a first step to evaluate and compare multiresolution models. We propose a set of tests to measure the speed performance of the models for interactive v...

This paper presents a novel progressive mesh model based on collapse tree, which can accomplish the disordered expansions and collapses of the simplified mesh and is able to restore the mesh just in a specific area. With arbitrary collapse and expansion, we design an edge collapse algorithm for mesh optimization. Its summary process can be described as follows: generating a series of new simpli...

BACKGROUND In the active shape model framework, principal component analysis (PCA) based statistical shape models (SSMs) are widely employed to incorporate high-level a priori shape knowledge of the structure to be segmented to achieve robustness. A crucial component of building SSMs is to establish shape correspondence between all training shapes, which is a very challenging task, especially i...