New interface classifier versus proposed in [33]. (a, b) Point () represents a real interface point of a ground-truth weakly supported surface. (a) illustrates the typical situation when classifier wrongly classifies a point as an interface point and enforces t-weight (red peak) in wrong place, that is, in space that should be labeled as free. (b) Design of the new interface classifier leads to correct classification of interface point and t-weight enforcement in correct place. Note that the t-edge weights are low because this is illustration of weights near a weakly supported surface.