Researchers in the computer vision laboratory at Linköping
University in Sweden have coined the term *tensor field filtering*
[GK95] to describe a broad class of ``reconvolutions'' on
the orientation map representation for a given image or, in higher
dimensions, a given image sequence. The term ``tensor field'' is used
as a generalisation of the concept of an orientation field (or map)
for higher dimensions. In this context, OTC could be regarded as a
special case of 2D tensor field filtering. Some of the applications
of tensor field filtering that have been explored recently include
curvature estimation and tensor field controlled image and image
sequence enhancement. We will now give a brief overview of the basic
ideas behind curvature estimation on the orientation map
representation. We will also briefly investigate a set of operators
which are designed to detect rotational symmetry in the orientation field.

Tue Jan 7 15:44:13 PST 1997