A new approach is proposed for fast track Ending in position-sensitive dete
ctors. The basic working principle is modeled on what is widely believed to
be the low-level mechanism used by the eye to recognize straight edges. A
number of receptors are tuned such that each one responds to a different ra
nge of track orientations, each track actually fires several receptors and
an estimate of the orientation is obtained through interpolation. The feasi
bility of a practical device based on this principle and its possible imple
mentation using currently available digital logic is discussed. (C) 2000 El
sevier Science B.V. All rights reserved.