edge focusing

edge focusing

[′ej ‚fō·kəs·iŋ]
(electromagnetism)
Axial focusing of a stream of ions which occurs when it crosses a fringe magnetic field obliquely; used in mass spectrometers and cyclotrons.
References in periodicals archive ?
Bergholm [21] introduced the concept of edge focusing and tracked edges from coarse to fine to mask weak and noisy edges.
Multiresolution contour detection may be classified into edge focusing and position-dependent blurring.