PROGRAMMABLE IMAGE ASSOCIATIVE MEMORY USING AN OPTICAL DISK AND A PHOTOREFRACTIVE CRYSTAL

被引：8

作者：

NEIFELD, MA ^{[1
]}

PSALTIS, D ^{[1
]}

机构：

[1] CALTECH, DEPT ELECT ENGN, PASADENA, CA 91125 USA

来源：

APPLIED OPTICS | 1993年 / 32卷 / 23期

关键词：

ASSOCIATIVE MEMORY; OPTICAL DISK; IMAGE CORRELATION; PHOTOREFRACTIVE MEDIA;

D O I：

10.1364/AO.32.004398

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The optical disk is a computer-addressable binary storage medium with very high capacity. More than 1010 bits of information can be recorded on a 12-cm-diameter optical disk. The natural two-dimensional format of the data recorded on an optical disk makes this medium particularly attractive for the storage of images and holograms, while parallel access provides a convenient mechanism through which such data may be retrieved. In this paper we discuss a closed-loop optical associative memory based on the optical disk. This system incorporates image correlation, using photorefractive media to compute the best association in a shift-invariant fashion. When presented with a partial or noisy version of one of the images stored on the optical disk, the optical system evolves to a stable state in which those stored images that best match the input are temporally locked in the loop.

引用

页码：4398 / 4409

页数：12