论文信息 - Adaptive photodichroic matched spatial filter.

Adaptive photodichroic matched spatial filter.

Photodichroic NaF has seen extensive use in optical data processing for the storage of binary data, as an opticaloptical image converter, in the elimination of the on-axis wave in holographic reconstruction, in holographic sub traction, and as an active filter of large dynamic range. We report here on the use of the photodichroic properties of the M/MA center in NaF:LiF as an adaptive holographic matched spatial filter element for optical pattern recognition. The modified joint transform correlator of Fig. 1 was used. The two input functions shown in Fig. 2(a) were placed side by side in the input plane P0 with a center-to-center spacing 2a. The input distribution in 1-D can be represented by

David Casasent | Frank Caimi | D. Casasent | F. Caimi

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