Figure 3From: Semi-automatic algorithm for construction of the left ventricular area variation curve over a complete cardiac cycle Step-by-step preprocessing results. (a) Input image (); (b) after time-averaging; (c) after wavelet denoising; (d) after edge enhancement; (e) after morphological closing and opening (disk radius = 1); (f) after morphological closing (disk radius = 3); (g) after homotopy modification. This temporal-frame corresponds to end-diastole.Back to article page