Using Computer-Generated Displays for Research on Synthesized Displays: Distance Perception Aided by Aerial Perspective and Texture
Abstract
This report relates to an evolving capability to faithfully duplicate real world scenes on cathode ray tubes on the basis of numerical models and data stored and processed by digital computers. The potential accuracy and detail of such computer-generated imagery are virtually unlimited assuming appropriate computational power and software are provided. The research described is part of an effort to develop a basis for assuring that future computer-generated display features are consistent with cost and user information requirements. Experienced air crew members and university students estimated distances on the basis of quantitatively defined visual cues included in computer-generated displays. Estimates were obtained for eight different distances depicted by variations in the position and size of an object of specified dimensions. The object was rectangular in shape, blue in color, and appeared on a green background. The distances represented were 3,000; 5,000; 8,000; 12,000; 17,000; 23,000;; 30,000; and 38,000 feet. Two additional features of the computer-generated displays were investigated as independent variables: (1)aerial perspective at four levels of visibility, or fog, and (2) background texture. The background texture was produced by stripes of different shades of green overlaid at right angles to form a random pattern. Three levels of texture were generated by depicting stripes 1000, 2000, and 4000 feet in width.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1976
- Accession Number
- ADA030589
Entities
People
- Diana Nelson
- Malcolm Ritchie
Organizations
- Wright State University