Results 221 to 230 of about 26,692 (257)

Modeling Bayesian estimation for deformable contours

Proceedings of the Seventh IEEE International Conference on Computer Vision, 1999
A novel trainable snake model called EigenSnake, is presented in the Bayesian framework. In the EigenSnake, prior knowledge of a specific object shape, such as that of face outlines and facial features, is derived from a training set of the shape and incorporated into a Bayesian snake model in the form of the prior distribution. Further, a "shape space"
Stan Z. Li, Juwei Lu
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The Use of AlloDerm for the Correction of Nasal Contour Deformities

Plastic and Reconstructive Surgery, 2001
What rhinoplasty surgeon has not been frustrated by unmet expectations from unreliable graft materials? The quest for an ideal graft continues. Septal cartilage is not always adequate in amount or substance. Ear cartilage may cause unsightly irregularities over time.
Joe M., Gryskiewicz, Rod J., Rohrich, Brian J., Reagan, Barry M., Schwartz   +3 more
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Contouring variability of human- and deformable-generated contours in radiotherapy for prostate cancer

Physics in Medicine and Biology, 2015
This study was designed to evaluate contouring variability of human-and deformable-generated contours on planning CT (PCT) and CBCT for ten patients with low-or intermediate-risk prostate cancer. For each patient in this study, five radiation oncologists contoured the prostate, bladder, and rectum, on one PCT dataset and five CBCT datasets.
Stephen J, Gardner, Ning, Wen, Jinkoo, Kim, Chang, Liu, Deepak, Pradhan, Ibrahim, Aref, Richard, Cattaneo, Sean, Vance, Benjamin, Movsas, Indrin J, Chetty, Mohamed A, Elshaikh   +10 more
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Recovery of contour deformation using steerable filters

[Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, 1991
A motion-based approach is presented to recovering the nonrigid deformation of free-form curved objects. Protrusions and indentations of contours are typically the results of altering curvature structure along the symmetry axes. The recovery task is formulated as a search for a set of lines of curvature on the spatiotemporal surface.
P. Robert Hsu, Hiroshi Harashima
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Calf Augmentation and Correction of Contour Deformities

Clinics in Plastic Surgery, 1991
In general, augmentation of soft tissue has been a problem for plastic surgeons because of the body's protective mechanisms against foreign material, but silicone rubber implants are the author's choice of the materials currently available. The aesthetic considerations of the shape of the calf and techniques and complications are discussed.
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Deformable Contour Method: A Constrained Optimization Approach

International Journal of Computer Vision, 2004
In this paper, a class of deformable contour methods using a constrained optimization approach of minimizing a contour energy function satisfying an interior homogeneity constraint is proposed. The class is defined by any positive potential function describing the contour interior characterization.
Xun Wang 0008, Lei He 0007, William G. Wee   +2 more
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Surface shape from the deformation of apparent contours

International Journal of Computer Vision, 1992
The spatiotemporal analysis of deforming silhouettes (apparent contours) is here extended using the mathematics of perspective projections and tools from differential geometry. Analysis of the image motion of a silhouette or apparent contour enables computation of local surface curvature along the corresponding contour generator on the surface ...
Roberto Cipolla, Andrew Blake 0001
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Capsular Flap for Correction of Contour Deformities of the Breast

Annals of Plastic Surgery, 2005
We describe a technique in which the breast implant capsule is used to fill localized depressions in the breast, including those under the nipple-areola complex. Capsules have been reported to persist long-term and their high vascularity renders them suitable for use as flaps.
Danish, Imran, Muhammad, Javaid, Darren, Lewis, Kaka Hama, Attar   +3 more
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Lip contour extraction using a deformable model

Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101), 2000
The use of visual information from lip movements can improve the accuracy and robustness of a speech recognition system. Accurate extraction of visual features associated with the lips is thus very important. In this paper, we present a deformable model-based technique for lip contour extraction from color lip images. The geometric lip model we propose
Alan Wee-Chung Liew, Shu Hung Leung, Wing Hong Lau   +2 more
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A coarse-to-fine deformable contour optimization framework

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2003
This paper introduces a novel coarse-to-fine deformable contour optimization framework, which is composed of two main components. The first component uses scale-space and information theories to produce a coarser representation of the input image to be used in a coarse-to-fine optimization scheme.
Yusuf Sinan Akgul, Chandra Kambhamettu
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