Visual Display Parameters.
Abstract
The Visual Display Parameters (VDP) project was directed towards the analysis of wide-angle visual displays on dome (or spherical) screens. The objective was to gain the capability to explore the image parameters of distortion, luminance, and resolution of proposed dome displays. A problem with dome displays is in their physical specification and subsequent display performance. Often, the resulting display system does not meet the intended specifications. The main product of the VDP project is a FORTRAN computer program, NVDPMAP, that assists in the analysis of a dome display based on a generalized projection system model. The purpose of the program is to reduce the time spent performing calculations, to automate and improve display analyses, and to provide graphic output concerning a system's performance in an easily digestable form. The parameters of distortion, luminance, and resolution can be examined on perspective and aitoff maps of the display. NVDPMAP can be run via a command sequence menu. Input to NVDPMEAP may be from a formatted input file, or may be entered interactively when running the program. The NVDPMAP program is an aid in designing a dome display and predicting final performance. The basic NVDPMAP program can be modified to change the projector, lens, and screen functions to those of a specific projection system. Keywords: Projective geometry; Display systems; Dome display screens; Mathematical models.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 1985
- Accession Number
- ADA158773
Entities
People
- R. C. Hebb