A Generic Deformation Model for Dense Non-rigid Surface Registration: A Higher-Order MRF-Based Approach

2013 ◽  
Author(s):  
Yun Zeng ◽  
Chaohui Wang ◽  
Xianfeng Gu ◽  
Dimitris Samaras ◽  
Nikos Paragios
Keyword(s):  
Higher Order ◽  
Surface Registration ◽  
Deformation Model ◽  
Rigid Surface

scholarly journals Higher-Order Graph Principles towards Non-Rigid Surface Registration

2016 ◽  
Vol 38 (12) ◽  
pp. 2416-2429 ◽  
Author(s):  
Yun Zeng ◽  
Chaohui Wang ◽  
Xianfeng Gu ◽  
Dimitris Samaras ◽  
Nikos Paragios
Keyword(s):  
Higher Order ◽  
Surface Registration ◽  
Rigid Surface

A new higher order shear deformation model for functionally graded beams

2015 ◽  
Vol 20 (5) ◽  
pp. 1835-1841 ◽  
Author(s):  
Lazreg Hadji ◽  
Zoubida Khelifa ◽  
Adda Bedia El Abbes
Keyword(s):  
Shear Deformation ◽  
Higher Order ◽  
Functionally Graded ◽  
Deformation Model

A New Higher Order Shear Deformation Model for Static Behavior of Functionally Graded Plates

2013 ◽  
Vol 5 (03) ◽  
pp. 351-364 ◽  
Author(s):  
Tahar Hassaine Daouadji ◽  
Abdelouahed Tounsi ◽  
El Abbes Adda Bedia
Keyword(s):  
Shear Stress ◽  
Shear Deformation ◽  
Transverse Shear ◽  
Volume Fraction ◽  
Higher Order ◽  
Functionally Graded ◽  
Shear Stresses ◽  
Deformation Model ◽  
Functionally Graded Plates ◽  
Static Behavior

AbstractIn this paper, a new displacement based high-order shear deformation theory is introduced for the static response of functionally graded plate. Unlike any other theory, the number of unknown functions involved is only four, as against five in case of other shear deformation theories. The theory presented is variationally consistent, has strong similarity with classical plate theory in many aspects, does not require shear correction factor, and gives rise to transverse shear stress variation such that the transverse shear stresses vary parabolically across the thickness satisfying shear stress free surface conditions. The mechanical properties of the plate are assumed to vary continuously in the thickness direction by a simple power-law distribution in terms of the volume fractions of the constituents. Numerical illustrations concerned flexural behavior of FG plates with Metal-Ceramic composition. Parametric studies are performed for varying ceramic volume fraction, volume fraction profiles, aspect ratios and length to thickness ratios. The validity of the present theory is investigated by comparing some of the present results with those of the classical, the first-order and the other higher-order theories. It can be concluded that the proposed theory is accurate and simple in solving the static behavior of functionally graded plates.

scholarly journals Finite Element Surface Registration Incorporating Curvature, Volume Preservation, and Statistical Model Information

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Thomas Albrecht ◽  
Andreas Dedner ◽  
Marcel Lüthi ◽  
Thomas Vetter
Keyword(s):  
Finite Element ◽  
Adaptive Mesh Refinement ◽  
Adaptive Mesh ◽  
Surface Registration ◽  
Deformation Model ◽  
Registration Method ◽  
Element Discretization ◽  
Volume Preservation ◽  
Continuous Formulation ◽  
Statistical Deformation Model

We present a novel method for nonrigid registration of 3D surfaces and images. The method can be used to register surfaces by means of their distance images, or to register medical images directly. It is formulated as a minimization problem of a sum of several terms representing the desired properties of a registration result: smoothness, volume preservation, matching of the surface, its curvature, and possible other feature images, as well as consistency with previous registration results of similar objects, represented by a statistical deformation model. While most of these concepts are already known, we present a coherent continuous formulation of these constraints, including the statistical deformation model. This continuous formulation renders the registration method independent of its discretization. The finite element discretization we present is, while independent of the registration functional, the second main contribution of this paper. The local discontinuous Galerkin method has not previously been used in image registration, and it provides an efficient and general framework to discretize each of the terms of our functional. Computational efficiency and modest memory consumption are achieved thanks to parallelization and locally adaptive mesh refinement. This allows for the first time the use of otherwise prohibitively large 3D statistical deformation models.

A New Higher Order Shear Deformation Model of Functionally Graded Beams Based on Neutral Surface Position

2015 ◽  
Vol 69 (3) ◽  
pp. 683-691 ◽  
Author(s):  
Khelifa Zoubida ◽  
Tahar Hassaine Daouadji ◽  
Lazreg Hadji ◽  
Abdelouahed Tounsi ◽  
Adda Bedia El Abbes
Keyword(s):  
Shear Deformation ◽  
Higher Order ◽  
Functionally Graded ◽  
Deformation Model ◽  
Neutral Surface ◽  
Neutral Surface Position
Sign in / Sign up

Export Citation Format

Share Document