MATERIALS STUDY FOR VISUAL TRANSFORMATION DEVICES.
Abstract
A study of techniques for implementation of pattern recognition by uniform isotropic boundary propagation (the Blum process) was conducted. The desired component was a flat screen capable of performing this process on arbitrary high-contrast input images, providing both the basic propagation process and also satisfying the condition that confluent boundaries annihilate without crossing. Techniques studied include electroluminescent/photoconductive laminates, glow discharge phenomena, diffusion processes, thin film reactions, image storage tube systems, and thin film magnetic phenomena. Research was conducted on a theoretical level, including both analysis of basic propagation mechanisms and consideration of engineering parameters. The first three of the above systems appear potentially feasible, the EL/PC screen offering the most promise within the current state of the art. A prototype screen of this type was procured from Westinghouse and its behavior is described. Satisfactory propagation was not achieved, for reasons given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 31, 1966
- Accession Number
- AD0646361
Entities
People
- L. D. Nichols