DEVELOPMENT OF MEASUREMENT TECHNIQUES FOR EVALUATION OF A VISUAL SIMULATION SYSTEM.
Abstract
The purpose of this study was to develop evaluation techniques for visual simulation and to obtain an improved display for the SMK-23 Visual Simulator Attachment. In the past, evaluation techniques have been developed for television subsystems, but have not included the optical probe. This report documents techniques developed for the evaluation of the optical probe using the television camera as the measuring instrument. This permits the evaluation of the optical probe as it is actually used in the Visual Simulator. The evaluation includes resolution, depth of field, and flatness of field. To improve the picture quality of the SMK-23, different optical probes were evaluated and the sequential color television system was modified to 1029-line, high resolution monochrome television. In the original SMK-23, system performance is limited by the bead lens optical probe. This probe limits the resolution, depth of field, and flatness of field of the final display. Another optical probe overcomes these limitations and is recommended to replace the bead. The conversion of the SMK-23 to monochrome television greatly improves the resolution capabilities of the system, and also eliminates the color misregistration that is inherent in the original system. By using both the monochrome system and the adopted optical probe, the light available to the pickup tube is greatly increased. This permits the use of a less sensitive and less expensive image orthicon pickup tube and improves signal-to-noise ratio. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0820280
Entities
People
- James D. Basinger
- Larry D. Holden