Regularization of inverse visual problems involving discontinuities
IEEE Transactions on Pattern Analysis and Machine Intelligence
Estimation of Object Motion Parameters from Noisy Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Visual reconstruction
Constraints on deformable models: recovering 3D shape and nongrid motion
Artificial Intelligence
The Computation of Visible-Surface Representations
IEEE Transactions on Pattern Analysis and Machine Intelligence
Applications of dynamic monocular machine vision
Machine Vision and Applications
One-Dimensional Regularization with Discontinuities
IEEE Transactions on Pattern Analysis and Machine Intelligence
Recovery of Parametric Models from Range Images: The Case for Superquadrics with Global Deformations
IEEE Transactions on Pattern Analysis and Machine Intelligence
On Three-Dimensional Surface Reconstruction Methods
IEEE Transactions on Pattern Analysis and Machine Intelligence
On active contour models and balloons
CVGIP: Image Understanding
Dynamic 3D Models with Local and Global Deformations: Deformable Superquadrics
IEEE Transactions on Pattern Analysis and Machine Intelligence
Closed-Form Solutions for Physically Based Shape Modeling and Recognition
IEEE Transactions on Pattern Analysis and Machine Intelligence
Recovery of Nonrigid Motion and Structure
IEEE Transactions on Pattern Analysis and Machine Intelligence
Surface Reconstruction Using Deformable Models with Interior and Boundary Constraints
IEEE Transactions on Pattern Analysis and Machine Intelligence
Kalman filtering: theory and practice
Kalman filtering: theory and practice
Boundary Finding with Parametrically Deformable Models
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multiresolution stochastic hybrid shape models with fractal priors
ACM Transactions on Graphics (TOG) - Special issue on interactive sculpting
3D position, attitude and shape input using video tracking of hands and lips
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Physics-based modeling of nonrigid objects for vision and graphics
Physics-based modeling of nonrigid objects for vision and graphics
Inferring 2D object structure from the deformation of apparent contours
Computer Vision and Image Understanding - Special issue on physics-based modeling and reasoning in computer vision
Imposing hard constraints on deformable models through optimization in orthogonal subspaces
Computer Vision and Image Understanding - Special issue on physics-based modeling and reasoning in computer vision
Motion-based part segmentation, shape and motion estimation of multi-part objects
Motion-based part segmentation, shape and motion estimation of multi-part objects
Multi-Level Shape Representation Using Global Deformations andLocally Adaptive Finite Elements
International Journal of Computer Vision
Three-Dimensional Human Body Model Acquisition from Multiple Views
International Journal of Computer Vision
Generalized gradient vector flow external forces for active contours
Signal Processing - Special issue on deformable models and techniques for image and signal processing
Globally constrained deformable models for 3D object reconstruction
Signal Processing - Special issue on deformable models and techniques for image and signal processing
An Adaptive-Focus Deformable Model Using Statistical and Geometric Information
IEEE Transactions on Pattern Analysis and Machine Intelligence
Model-Based Estimation of 3D Human Motion
IEEE Transactions on Pattern Analysis and Machine Intelligence
Deformable Shape Detection and Description via Model-Based Region Grouping
IEEE Transactions on Pattern Analysis and Machine Intelligence
Physics-Based Deformable Models: Applications to Computer Vision, Graphics, and Medical Imaging
Physics-Based Deformable Models: Applications to Computer Vision, Graphics, and Medical Imaging
Deformable Models in Medical Image Analysis
Deformable Models in Medical Image Analysis
Shape and Nonrigid Motion Estimation Through Physics-Based Synthesis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Adaptive-Size Meshes for Rigid and Nonrigid Shape Analysis and Synthesis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Constructing Intrinsic Parameters with Active Models for Invariant Surface Reconstruction
IEEE Transactions on Pattern Analysis and Machine Intelligence
Scale Space Tracking and Deformable Sheet Models for Computational Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
A Common Framework for Kinetic Depth, Reconstruction and Motion for Deformable Objects
ECCV '94 Proceedings of the Third European Conference-Volume II on Computer Vision - Volume II
Elastically Adaptive Deformable Models
ECCV '96 Proceedings of the 4th European Conference on Computer Vision-Volume II - Volume II
A New Dynamic FEM-Based Subdivision Surface Model for Shape Recovery and Tracking in Medical Images
MICCAI '98 Proceedings of the First International Conference on Medical Image Computing and Computer-Assisted Intervention
Guidelines for Choosing Optimal OParameters of Elasticity for Snakes
CAIP '95 Proceedings of the 6th International Conference on Computer Analysis of Images and Patterns
Bounds on the Optimal Elasticity Parameters for a Snake
ICIAP '95 Proceedings of the 8th International Conference on Image Analysis and Processing
Algorithms for implicit deformable models
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
On multi-feature integration for deformable boundary finding
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
3D human body model acquisition from multiple views
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
Shape Recovery Using Dynamic Subdivision Surfaces
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Snake Pedals: Geometric Models with Physics-Based Control
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Automatic Hybrid Segmentation of Dual Contrast Cardiac MR Data
MICCAI '02 Proceedings of the 5th International Conference on Medical Image Computing and Computer-Assisted Intervention-Part I
Kinematic sets for real-time robust articulated object tracking
Image and Vision Computing
Locating object contours in complex background using improved snakes
Computer Vision and Image Understanding
IEEE Transactions on Pattern Analysis and Machine Intelligence
Convergence analysis of active contours
Image and Vision Computing
Tracking vertex flow and model adaptation for three-dimensional spatiotemporal face analysis
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans - Special issue on recent advances in biometrics
A geometric approach to the problem of reconstruction of the sample behavior in hidden dimensions
Pattern Recognition and Image Analysis
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We present a novel technique for the automatic adaptation of a deformable model's elastic parameters within a Kalman filter framework for shape estimation applications. The novelty of the technique is that the model's elastic parameters are not constant, but spatio-temporally varying. The variation of the elastic parameters depends on the distance of the model from the data and the rate of change of this distance. Each pass of the algorithm uses physics-based modeling techniques to iteratively adjust both the geometric and the elastic degrees of freedom of the model in response to forces that are computed from the discrepancy between the model and the data. By augmenting the state equations of an extended Kalman filter to incorporate these additional variables, we are able to significantly improve the quality of the shape estimation. Therefore, the model's elastic parameters are always initialized to the same value and they are subsequently modified depending on the data and the noise distribution. We present results demonstrating the effectiveness of our method for both two-dimensional and three-dimensional data.