Visual perception as a fundamental sensation that shapes our understanding is of interest to science and art. 

With the introduction of support for other precisions, the floating-point landscape has recently become much richer.

Modern image acquisition methods can capture info. that is no longer restricted to Euclidean spaces but can be manifold-valued.

The two largest modes of image variation are intensity variation and variation in point correspondence.

The notion of convergence has a very specific connotation of coming together without ever moving apart.