نتایج جستجو برای: 2d displacement

تعداد نتایج: 136891  

Journal: :J. Num. Math. 2002
Carsten Carstensen Roland Klose

This paper provides a short Matlab implementation with documentation of the P1 finite element method for the numerical solution of viscoplastic and elastoplastic evolution problems in 2D and 3D for von-Mises yield functions and Prandtl-Reuß flow rules. The material behaviour includes perfect plasticity as well as isotropic and kinematic hardening with or without a viscoplastic penalisation in a...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2008
Ramón Casero J. Alison Noble

In this paper, we propose a novel explicit 2D+t cyclic shape model that extends the Point Distribution Model (PDM) to shapes like myocardial contours with cyclic dynamics. We also propose an extension to Procrustes alignment that removes pose and subject size variability while maintaining dynamic effects. Our model draws on ideas from Principal Component Analysis (PCA), Multidimensional Scaling...

2018
Huaxia Deng Yifan Diao Jin Zhang Peng Zhang Mengchao Ma Xiang Zhong Liandong Yu

Abstract: Unbalanced mass identification is important for rotor systems. Current methods normally use sensors, which only detect vibration in two-dimensional (2D) space. Actually, the rotor systems vibrate in three-dimensional directions. In this paper, a non-contact method is developed to identify unbalanced mass of rotor systems in 3D space. A stereo video system with a pair of synchronized h...

Journal: :European heart journal cardiovascular Imaging 2013
Jose Angel Urbano-Moral Jose Antonio Arias-Godinez Raabia Ahmad Rabiya Malik Michael S Kiernan David DeNofrio Natesa G Pandian Ayan R Patel

AIMS Two-dimensional speckle-tracking echocardiography (2D-STE) is limited by its inability to track tissue motion in three dimensions. This is particularly relevant in heart transplant recipients, in whom marked translational motion of the transplanted heart is present. We aimed to compare 3-dimensional (3D)- and 2D-STE-derived strain parameters, and to identify clinical features associated wi...

Journal: :NMR in biomedicine 2012
Ovidiu C Andronesi Borjan A Gagoski Elfar Adalsteinsson A Gregory Sorensen

In this work we introduce the concept of correlation chemical shift imaging (CCSI). Novel CCSI pulse sequences are demonstrated on clinical scanners for two-dimensional Correlation Spectroscopy (COSY) and Total Correlation Spectroscopy (TOCSY) imaging experiments. To date there has been limited progress reported towards a feasible and robust multivoxel 2D COSY. Localized 2D TOCSY imaging is sho...

Journal: :International Symposium on Particle Image Velocimetry 2021

Several techniques including two-dimensional (2D) and three-dimensional (3D) calibration are used for the of two-component (2C-2D) particle image velocimetry (PIV) three-component (3C-2D) stereoscopic PIV (SPIV) systems. A major requirement these is to keep target exactly at position laser sheet within field view (FOV), which very difficult achieve (Raffel et al., 2018). In 3C-2D SPIV, several ...

Journal: :SoftwareX 2022

Abstract The main purpose of this work is to present a new fully-customizable out-of-the-box open-source 2D Digital Image Correlation (2D-DIC) software, so-called iCorrVision-2D. It implemented in Python, including image acquisition (grabber), numerical correlation and post-processing modules. proposed software has an intuitive graphical user interface support selecting all para...

2013
Ahmad Safuan A Rashid Koohyar Faizi Roohollah Kalatehjari Ramli Nazir

The field performance of a geotechnical structures including its failure mechanism should be evaluated in detail before construction in order to minimize the possibility of potential failure. In this paper, the application of soil nailing system is documented in a detailed based on case study in the north of Tehran, Iran. The total excavation depth for a 15 storey residual building wall brought...

Journal: :Clinical physiology and functional imaging 2012
Katarina Kindberg Henrik Haraldsson Andreas Sigfridsson Hajime Sakuma Tino Ebbers Matts Karlsson

A quantitative analysis of myocardial mechanics is fundamental to the understanding of cardiac function, diagnosis of heart disease and assessment of therapeutic intervention. In clinical practice, most cardiac imaging analyses are performed in 2D because of the limited scan time available. However, the obtained information from a 2D measurement is limited. This study presents a method to obtai...

2016
Zichun Zhong Xiaohu Guo Yiqi Cai Yin Yang Jing Wang Xun Jia Weihua Mao

By using prior information of planning CT images and feature-based nonuniform meshes, this paper demonstrates that volumetric images can be efficiently registered with a very small portion of 2D projection images of a Cone-Beam Computed Tomography (CBCT) scan. After a density field is computed based on the extracted feature edges from planning CT images, nonuniform tetrahedral meshes will be au...

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