Accession Number:

ADA008085

Title:

Stereoscopic Terrain Display for Measurement Applications.

Descriptive Note:

Final rept.,

Corporate Author:

NORTHROP RESEARCH AND TECHNOLOGY CENTER HAWTHORNE CALIF

Personal Author(s):

• McCrickered,J. T.
• Glaser,G. H.

Report Date:

1974-12-13

Pagination or Media Count:

151.0

Abstract:

A stereoscopic terrain display is developed which looks realistic because visual parameters are closely matched to those encountered in natural environments. Wide-view rear projection is achieved without need for spectacles or eyepieces the light beams from left- and right-viewpoint pictures are individually directed into the respective eyes of the user. Terrain can be continuously scanned across the display screen without interruption of stereoscopic effect. Pictures are loaded into the display unit as slides. Parallax normal to the eye-base direction i.e., y-parallax is zeroed at once across the entire display area without user effort, by rectifying the pictures in production. Good resolution is achieved by rectifying the pictures with perfectly focused lenses. Also treated are methods to make precise measurements of terrain features in the display. Errors anticipated in a well designed measurement system are estimated. Most convenient measurement scheme may use holographic picture-slides. A display unit was demonstrated with a holographic picture-slide.

Descriptors:

• *MAPPING
• *AERIAL PHOTOGRAPHY
• *STEREOSCOPIC DISPLAY SYSTEMS
• COMPUTERIZED SIMULATION
• REAL TIME
• TERRAIN
• HOLOGRAPHY

Subject Categories:

• Cartography and Aerial Photography
• Holography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE