NTRS - NASA Technical Reports Server

Back to Results
Laser Opto-Electronic Correlator for Robotic Vision Automated Pattern RecognitionA compact laser opto-electronic correlator for pattern recognition has been designed, fabricated, and tested. Specifically it is a translation sensitivity adjustable compact optical correlator (TSACOC) utilizing convergent laser beams for the holographic filter. Its properties and performance, including the location of the correlation peak and the effects of lateral and longitudinal displacements for both filters and input images, are systematically analyzed based on the nonparaxial approximation for the reference beam. The theoretical analyses have been verified in experiments. In applying the TSACOC to important practical problems including fingerprint identification, we have found that the tolerance of the system to the input lateral displacement can be conveniently increased by changing a geometric factor of the system. The system can be compactly packaged using the miniature laser diode sources and can be used in space by the National Aeronautics and Space Administration (NASA) and ground commercial applications which include robotic vision, and industrial inspection of automated quality control operations. The personnel of Standard International will work closely with the Jet Propulsion Laboratory (JPL) to transfer the technology to the commercial market. Prototype systems will be fabricated to test the market and perfect the product. Large production will follow after successful results are achieved.
Document ID
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Marzwell, Neville
Date Acquired
August 23, 2013
Publication Date
September 1, 1995
Subject Category
Cybernetics, Artificial Intelligence And Robotics
Distribution Limits
Laser Opto-Electronic

Available Downloads

There are no available downloads for this record.
No Preview Available