Figure 4
From: Extraction of average neck flexion angle during swallowing in neutral and chin-tuck positions
Segmentation and template tracking steps. Segmentation and template tracking: (a) example of a segmented frame, h k , showing the 3T x × 3T y search space, η k , centered around the centroid, ck-1, and template χk-1in its initial position; (b) identification of the best matched region η match centered around the point (u*, v*) yielding the highest cross-correlation in (7) within the search space η k in the kthframe.