Tongue contour tracking in dynamic ultrasound via higher-order MRFs and efficient fusion moves

► We propose a novel higher-order MRF model for 2D tongue contour tracking. ► We propose 2 schemes that wisely sample solution space for efficient optimization. ► We adapt temporal regularization according to contextual information. ► Evaluation on 63 sequences proved that our method outperforms previous methods. ► For reproducibility, we report all parameter settings and publicize our software at http://tonguetrack.cs.sfu.ca.