Automatic Character Reading Using a Holographic Data Processing Technique
- 1 February 1972
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 11 (2) , 362-371
- https://doi.org/10.1364/ao.11.000362
Abstract
One of the useful applications of holography is information conversion. This paper reports on a newly developed automatic character reading system using code-transform holograms for analog-digital (A-D) conversion. Unknown characters are recognized by converting spatial analog character information to spatial digital information. System parameters are sampled out, and important factors such as (1) discrimination, (2) storage capacity, and (3) reading speed, which determine the performance of this system, are discussed.Keywords
This publication has 5 references indexed in Scilit:
- Improvement of Nonuniformity of the Reconstructed Beam Intensity from a Multiple-Exposure HologramApplied Optics, 1971
- The Use of Film Nonlinearities in Optical Spatial FilteringApplied Optics, 1970
- Methods of Increasing Discrimination in Optical FilteringApplied Optics, 1968
- Character Recognition by HolographyNature, 1965
- Signal detection by complex spatial filteringIEEE Transactions on Information Theory, 1964