FIGURE 4.

Comparison between the connection of two intersecting surfaces using classical boolean operations and the proposed boolean‐connection algorithm: on the center, the left‐ventricular epicardium (∑₁) and endocardium (∑₂) as delivered by the segmentation process; on the left, the output of a classical boolean difference operator ∑₁ − ∑₂ which produces irregular triangles and narrowed regions, as depicted in the zoomed box; on the right, the output (∑) of the same difference computed with the boolean‐connection algorithm which generates a smooth surface made of regular triangles and which also assigns the tags of the endocardium (red), the epicardium (gray) and the newly‐generated valvular annulus (blue)