Results 211 to 220 of about 26,692 (257)

Parametrically deformable contour models

Proceedings CVPR '89: IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2003
Segmentation using boundary finding is enhanced both by considering the boundary as a whole and by using model-based shape information. Flexible constraints, in the form of a probabilistic deformable model, are applied to the problem of segmenting natural objects whose diversity and irregularity of shape makes them poorly represented in terms of fixed ...
Lawrence H. Staib, James S. Duncan
openaire   +1 more source

A new deformable contour method

Proceedings 10th International Conference on Image Analysis and Processing, 2003
In this paper, a new deformable contour method is presented and tested. The method incorporates several advantages and avoids the disadvantages of both the level set and the non-deterministic deformable contour methods. It takes the level set approach as a core procedure with an enhanced velocity control using a region growing-like function, and the ...
Xun Wang 0008, William G. Wee
openaire   +1 more source

Analyzing and filtering contour deformation

Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269), 2002
This article presents a general scheme for contour deformation analysis. It is based on a point-to-point multiresolution matching and an original representation of deformation. After a short presentation, we describe how this model allows us to detect and measure motion of articulated objects without any a priori knowledge. Then we show how a frequency
Alexis Vapillon, Bertrand Collin, Annick Montanvert   +2 more
openaire   +1 more source

A geometrically deformable contour model

1997
In this paper, we present a discrete dynamic contour model which simulates a liquid expansion on homogeneous flat surface and the outlining of encountered obstacles. It is implemented as a radial expansion of an initial closed curve which determines a reference region.
Ahmed Raji, Eric Petit 0001, Jacques Lemoine, Salim Djeziri   +3 more
openaire   +1 more source

SILICONE IMPLANTS FOR CONTOUR DEFORMITIES OF THE TRUNK

Plastic and Reconstructive Surgery, 1977
A follow-up study of 12 patients who had preformed silicone implants inserted for correction of body contour deformities (8 for pectus excavatum and 4 for soft-tissue deformities of the shoulder and pectoral region) has demonstrated the safety of this technique and its lack of significant early or late complications.
B, Mendelson, J K, Masson
openaire   +2 more sources

Adaptive parametrically deformable contours

1997
In this paper, we introduce an unsupervised contour estimation strategy based on parametrically deformable models. The problem is formulated in a (statistical) parameter estimation framework with the parameters of both the contour the and observation model (the likelihood function) being considered unknown.
Mário A. T. Figueiredo, José M. N. Leitão, Anil K. Jain 0001   +2 more
openaire   +1 more source

Tracking of deformable contours by synthesis and match

Proceedings of 13th International Conference on Pattern Recognition, 1996
This paper considers the problem of motion tracking of deformable contours based on synthesis and match. We propose framework which encodes specific information on shape, deformation and motion of the target object. Using this information, the trackers synthesize contours that are most likely to describe the object in the current frame, and perform ...
Kok F. Lai, Chong-Wah Ngo, Syin Chan
openaire   +1 more source

Image search using deformable contours

Proceedings. International Conference on Image Processing, 2003
This paper presents the use of deformable templates for image retrieval where a template line drawing sketch can be detected in the target image, irrespective of its position, size, rotation, and smooth deformation transformations. First, potential template positions are found in the target image using a modified version of the generalized Hough ...
Preeyakorn Tipwai, Suthep Madarasmi
openaire   +1 more source

Glasses detection and extraction by deformable contour

Proceedings 15th International Conference on Pattern Recognition. ICPR-2000, 2002
To achieve a face recognition system robust to the presence of spectacles, we have developed a spectacle detection and extraction algorithm. The detection is realized using edge information within a small area defined between the eyes. The extraction is achieved with a deformable contour, combining edge features such as strength and orientation and ...
Zhong Jing, Robert Mariani
openaire   +1 more source

Apparent Contours and their Legendrian Deformations

Moscow Mathematical Journal, 2003
Let \(M\) (resp. \(N\)) be a smooth manifold of dimension \(m\) (resp. a closed, smooth manifold of dimension \(n\)) and \(P\) the real projective space. Let \(PT^*M\) (resp. \(PT^*P\)) be the projectivized cotangent bundle of \(M\) (resp. \(P\)) and \(\{\psi_t\}_{t\in[0,1]}\) a contact isotopy, i.e.
openaire   +2 more sources