Speed limitation of hybrid optical/digital sequential image processing

A hybrid optical/digital processor usually involves an input discrete displ ay, an optical transformation module, and an output frame-grabbing module. The overall operation speed for sequential image processing is limited not only by the input/output interfaces but also by the different frame formats . This is modeled in terms of indented-interframe crosstalk, reiterative di screte display scheme and slipped frame-grabbing. The result shows that the overall operation speed varies inversely as the number of reiterative fram es when the input supply and output reception are matched properly. In part icular. the overall speed is lower than the display frame rate, and the max imum speed is limited to half the display frame rate when input display is doubly reiterated and the output grabbing is alternatively frame skipped. ( C) 1999 Elsevier Science B.V. All rights reserved.