geometric constraints

Terms from Artificial Intelligence: humans at the heart of algorithms

A geometric constraint is a form of constraint of an image that is driven by knowledge of 2D and 3D geometry. For example:


As is evident from the phrases 'as a general rule', 'usually', 'tend to', theer are often odd examples where the particular camera angle or strangely shaped objects break the 'rules', but they are often strubg heuristics if not inviolable laws.

Used in Chap. 12: page 179

Scene with edges labelled by Waltz' algorithm using on vertex constriants

An 'improper scene', which cannot be labelled by Walz' algorithm as it appears to violate geometric constraints. Note however if the L-shaped faces where suitably curved it would be possible to construct this.