Results 201 to 210 of about 55,861 (258)
Some of the next articles are maybe not open access.
Intracranial contour extraction with active contour models
Journal of Magnetic Resonance Imaging, 1997AbstractA novel image processing scheme for extracting the intracranial contours in axial magnetic resonance data sets is proposed. The scheme incorporates the method of active contour models, a recently introduced paradigm for contour extraction. Its performance is nearly ideal for T2âweighted images.
S, Matsumoto +3 more
openaire +2 more sources
2011 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011), 2011
This paper presents a Fuzzy Active Contour Model for image segmentation using three variations. The proposed models are based on the Fuzzy Energy-Based Active Contour model introduced by Krinidis and Chatzis. First, an update criteria that changes only localized membership values at each iteration is introduced.
Cesar Lima Pereira +3 more
openaire +1 more source
This paper presents a Fuzzy Active Contour Model for image segmentation using three variations. The proposed models are based on the Fuzzy Energy-Based Active Contour model introduced by Krinidis and Chatzis. First, an update criteria that changes only localized membership values at each iteration is introduced.
Cesar Lima Pereira +3 more
openaire +1 more source
International Journal of Computer Vision, 1988
A snake is an energy-minimizing spline guided by external constraint forces and influenced by image forces that pull it toward features such as lines and edges. Snakes are active contour models: they lock onto nearby edges, localizing them accurately. Scale-space continuation can be used to enlarge the capture region surrounding a feature.
Michael Kass +2 more
openaire +1 more source
A snake is an energy-minimizing spline guided by external constraint forces and influenced by image forces that pull it toward features such as lines and edges. Snakes are active contour models: they lock onto nearby edges, localizing them accurately. Scale-space continuation can be used to enlarge the capture region surrounding a feature.
Michael Kass +2 more
openaire +1 more source
MAC: Magnetostatic Active Contour Model
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008We propose an active contour model using an external force field that is based on magnetostatics and hypothesized magnetic interactions between the active contour and object boundaries. The major contribution of the method is that the interaction of its forces can greatly improve the active contour in capturing complex geometries and dealing with ...
Xianghua Xie, Majid Mirmehdi
openaire +4 more sources
Towards autonomy in active contour models
[1990] Proceedings. 10th International Conference on Pattern Recognition, 2002The strengths and the drawbacks of active contour models are described, and the absolute necessity of a criterion for assessing the solutions is pointed out. A method called snake growing, based on successive lengthenings of the snake, is proposed.
Berger, Marie-Odile, Mohr, Roger
openaire +1 more source
An active contour model for mapping the cortex
IEEE Transactions on Medical Imaging, 1995A new active contour model for finding and mapping the outer cortex in brain images is developed. A cross-section of the brain cortex is modeled as a ribbon, and a constant speed mapping of its spine is sought. A variational formulation, an associated force balance condition, and a numerical approach are proposed to achieve this goal.
Christos Davatzikos, Jerry L. Prince
openaire +2 more sources
Geometric models for active contours
Proceedings., International Conference on Image Processing, 2002A geometric formulation of active contours for 2D, 3D boundary detection and motion tracking is presented. The technique is based on active contours evolving in time according to intrinsic geometric measures of the image. The evolving contours naturally split and merge, allowing the simultaneous detection of several objects and both interior and ...
openaire +1 more source
A multistage, optimal active contour model
IEEE Transactions on Image Processing, 1996Energy-minimizing active contour models or snakes can be used in many applications such as edge detection, motion tracking, image matching, computer vision, and three-dimensional (3-D) reconstruction. We present a novel snake that is superior both in accuracy and convergence speed over previous snake algorithms.
Mao Wang +3 more
openaire +2 more sources
On active contour models and balloons
CVGIP: Image Understanding, 1991Summary: The use of energy-minimizing curves, known as ``snakes'', to extract features of interest in images has been introduced by \textit{M. Kass}, \textit{A. Witkin} and \textit{D. Terzopoulos} [Int. J. Comput. Vision 1, 321-331 (1987)]. We present a model of deformation which solves some of the problems encountered with the original method.
openaire +1 more source
A Charged Geometric Model for Active Contours
18th International Conference on Pattern Recognition (ICPR'06), 2006This paper presents a new deformable model based on charged particle dynamics and geometric contour propagation. It detects object boundaries with a charged active contour that propagates under the influence of Lorentz forces in an image-based electrostatic field.
Yang, R, Mirmehdi, M
openaire +1 more source