IEEE Transactions on Pattern Analysis and Machine Intelligence
Automatic Construction of 2D Shape Models
IEEE Transactions on Pattern Analysis and Machine Intelligence
Robust mixture modelling using the t distribution
Statistics and Computing
2D Affine-Invariant Contour Matching Using B-Spline Model
IEEE Transactions on Pattern Analysis and Machine Intelligence
Curve Clustering with Spatial Constraints for Analysis of Spatiotemporal Data
ICTAI '07 Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence - Volume 01
The mixtures of Student's t-distributions as a robust framework for rigid registration
Image and Vision Computing
Robust Bayesian mixture modelling
Neurocomputing
Invariant matching and identification of curves using B-splines curve representation
IEEE Transactions on Image Processing
IEEE Transactions on Neural Networks
A recurrent log-linearized Gaussian mixture network
IEEE Transactions on Neural Networks
Trend Time–Series Modeling and Forecasting With Neural Networks
IEEE Transactions on Neural Networks
IEEE Transactions on Neural Networks
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This brief presents a curve clustering technique based on a new multivariate model. Instead of the usual Gaussian random effect model, our method uses the multivariate t- distribution model which has better robustness to outliers and noise. In our method, we use the B-spline curve to model curve data and apply the mixed-effects model to capture the randomness and covariance of all curves within the same cluster. After fitting the B-spline-based mixed-effects model to the proposed multivariate t-distribution, we derive an expectation-maximization algorithm for estimating the parameters of the model, and apply the proposed approach to the simulated data and the real dataset. The experimental results show that our model yields better clustering results when compared to the conventional Gaussian random effect model.