Robust Myocardial Motion Tracking for Echocardiography: Variational Framework Integrating Local-to-Global Deformation

Figure 1

The estimation of endocardial border by the Lucas-Kanade optical flow method. Case  1: a tracking point getting out from the real LV shape distorts the whole shape near the border with weak edges; (a) initially traced endocardial border and its tracking points at an ED frame, (b) the tracked result at the ES frame, (c) at the frame between ES and ED, and (d) at the next ED frame.

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