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15 October 1986 Acoustooptic Image Correlators
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Proceedings Volume 0638, Hybrid Image Processing; (1986) https://doi.org/10.1117/12.964260
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States
Abstract
Two dimensional correlation for performing image recognition is one of the earliest examples of optical information processing suggested by Vander Lugt and it still remains one of the most promising application areas for this technology. The reasons optical image correlators have not found to this day widespread usage in pattern recognition systems fall into two categories: algorithmic limitations and lack of devices. Correlation-based pattern recognition algorithms have well known limitations such as scale and rotational sensitivity. Over the years algorithms based on optical correlation have been developed, which show promise for overcoming some of the algorithmic limitations, however they have not been put to a real practical test because of the lack of two dimensional spatial light modulators that are necessary for the implementation of the classic Vander Lugt correlator. Specifically, two separate two dimensional SLMs are needed, one for recording the input image and another for the reference.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eung Gi Paek, Cheol Hoon Park, Fai Mok, and Demetri Psaltis "Acoustooptic Image Correlators", Proc. SPIE 0638, Hybrid Image Processing, (15 October 1986); doi: 10.1117/12.964260; https://doi.org/10.1117/12.964260
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