Results 1  10
of
6,801
Wires: A Geometric Deformation Technique
, 1998
"... Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable featu ..."
Abstract

Cited by 171 (7 self)
 Add to MetaCart
Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable
DEFORMATION TECHNIQUES
, 1998
"... Suppose we are given a parametric polynomial equation system encoded by an arithmetic circuit, which represents a generically flat and unramified family of zerodimensional algebraic varieties. Let us also assume that there is given the complete description of the solution of a particular unramified ..."
Abstract
 Add to MetaCart
Suppose we are given a parametric polynomial equation system encoded by an arithmetic circuit, which represents a generically flat and unramified family of zerodimensional algebraic varieties. Let us also assume that there is given the complete description of the solution of a particular unramified parameter instance of our system. We show that it is possible to ``move' ' the given particular solution along the parameter space in order to reconstruct by means of an arithmetic circuit the coordinates of the solutions of the system for an arbitrary parameter instance. The underlying algorithm is highly efficient, i.e., polynomial in the syntactic description of the input and the following geometric invariants: the number of solutions of a typical parameter instance and the degree of the polynomials occurring in the output. In fact, we prove a slightly more general result, which implies the previous statement by means of a wellknown primitive element algorithm. We produce an efficient algorithmic description of the hypersurface obtained projecting polynomially the given generically flat family of varieties into a suitable affine space. 2000 Academic Press Key Words: polynomial equation system; arithmetic circuit; shape (or primitive element) lemma; Newton Hensel iteration.
Image Morphing Using Deformation Techniques
, 1996
"... This paper presents a new image morphing method using a twodimensional deformation technique which provides an intuitive model for a warp. The deformation technique derives a C ..."
Abstract

Cited by 56 (8 self)
 Add to MetaCart
This paper presents a new image morphing method using a twodimensional deformation technique which provides an intuitive model for a warp. The deformation technique derives a C
Freeform deformation of solid geometric models
 IN PROC. SIGGRAPH 86
, 1986
"... A technique is presented for deforming solid geometric models in a freeform manner. The technique can be used with any solid modeling system, such as CSG or Brep. It can deform surface primitives of any type or degree: planes, quadrics, parametric surface patches, or implicitly defined surfaces, f ..."
Abstract

Cited by 701 (1 self)
 Add to MetaCart
A technique is presented for deforming solid geometric models in a freeform manner. The technique can be used with any solid modeling system, such as CSG or Brep. It can deform surface primitives of any type or degree: planes, quadrics, parametric surface patches, or implicitly defined surfaces
Deformable models in medical image analysis: A survey
 Medical Image Analysis
, 1996
"... This article surveys deformable models, a promising and vigorously researched computerassisted medical image analysis technique. Among modelbased techniques, deformable models offer a unique and powerful approach to image analysis that combines geometry, physics, and approximation theory. They hav ..."
Abstract

Cited by 591 (7 self)
 Add to MetaCart
This article surveys deformable models, a promising and vigorously researched computerassisted medical image analysis technique. Among modelbased techniques, deformable models offer a unique and powerful approach to image analysis that combines geometry, physics, and approximation theory
Nonrigid registration using freeform deformations: Application to breast MR images
 IEEE Transactions on Medical Imaging
, 1999
"... Abstract — In this paper we present a new approach for the nonrigid registration of contrastenhanced breast MRI. A hierarchical transformation model of the motion of the breast has been developed. The global motion of the breast is modeled by an affine transformation while the local breast motion i ..."
Abstract

Cited by 697 (36 self)
 Add to MetaCart
nonrigid registration algorithm to those obtained using rigid and affine registration techniques. The results clearly indicate that the nonrigid registration algorithm is much better able to recover the motion and deformation of the breast than rigid or affine registration algorithms. I.
Wires: A Geometric Deformation Technique
"... Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable featu ..."
Abstract
 Add to MetaCart
Finding effective interactive deformation techniques for complex geometric objects continues to be a challenging problem in modeling and animation. We present an approach that is inspired by armatures used by sculptors, in which wire curves give definition to an object and shape its deformable
Pictorial Structures for Object Recognition
 IJCV
, 2003
"... In this paper we present a statistical framework for modeling the appearance of objects. Our work is motivated by the pictorial structure models introduced by Fischler and Elschlager. The basic idea is to model an object by a collection of parts arranged in a deformable configuration. The appearance ..."
Abstract

Cited by 816 (15 self)
 Add to MetaCart
In this paper we present a statistical framework for modeling the appearance of objects. Our work is motivated by the pictorial structure models introduced by Fischler and Elschlager. The basic idea is to model an object by a collection of parts arranged in a deformable configuration
Blind Beamforming for Non Gaussian Signals
 IEE ProceedingsF
, 1993
"... This paper considers an application of blind identification to beamforming. The key point is to use estimates of directional vectors rather than resorting to their hypothesized value. By using estimates of the directional vectors obtained via blind identification i.e. without knowing the arrray mani ..."
Abstract

Cited by 719 (31 self)
 Add to MetaCart
manifold, beamforming is made robust with respect to array deformations, distortion of the wave front, pointing errors, etc ... so that neither array calibration nor physical modeling are necessary. Rather surprisingly, `blind beamformers' may outperform `informed beamformers' in a plausible
Grid Deformation Techniques For TwoDimensional Hybrid Grids
 In 10th International Meshing Roundtable, pages 261–267, Sandia National Laboratories
, 2001
"... Numerical flow simulations for configurations with moving and deforming boundaries usually require consecutive modifications of the grid in order to guarantee that it remains boundary conforming. Three promising grid deformation techniques are investigated: a relatively new conformal mapping approac ..."
Abstract

Cited by 1 (0 self)
 Add to MetaCart
Numerical flow simulations for configurations with moving and deforming boundaries usually require consecutive modifications of the grid in order to guarantee that it remains boundary conforming. Three promising grid deformation techniques are investigated: a relatively new conformal mapping
Results 1  10
of
6,801