K. Pennington, J.S. Harper
Applied Optics
A technique employing coded grids in order to spatially modulate regions where changes occur is described. The technique allows rapid subtraction of two-dimensional information formats or rapid extraction of changes which occur between successive frames of information. It is amenable to processing by optical spatial filtering, digital computer or direct scanning methods. © 1970.
K. Pennington, J.S. Harper
Applied Optics
P.M. Will, K. Pennington
Applied Optics
A. Afzali, M. Desai, et al.
SPIE OE/LASE 1989
M.S. Cohen, A. Afzali, et al.
IBM J. Res. Dev