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Proceedings Paper

Photo Based Image Generator
Author(s): Nicholas M. Dalton; Charles S. Deering
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Paper Abstract

A two-channel Photography Based Image Generator system was developed to drive the Helmet Mounted Laser Projector at the Naval Training System Center at Orlando, Florida. This projector is a two-channel system that displays a wide field-of-view color image with a high-resolution inset to efficiently match the pilot's visual capability. The image generator is a derivative of the LTV-developed visual system installed in the A-7E Weapon System Trainer at NAS Cecil Field. The Photography Based Image Generator is based on patented LTV technology for high resolution, multi-channel, real world visual simulation. Special provisions were developed for driving the NTSC-developed and patented Helmet Mounted Laser Projector. These include a special 1023-line raster format, an electronic image blending technique, spherical lens mapping for dome projection, a special computer interface for head/eye tracking and flight parameters, special software, and a number of data bases. Good gaze angle tracking is critical to the use of the NTSC projector in a flight simulation environment. The Photography Based Image Generator provides superior dynamic response by performing a relatively simple perspective transformation on stored, high-detail photography instead of generating this detail by "brute force" computer image generation methods. With this approach, high detail can be displayed and updated at the television field rate (60 Hz).

Paper Details

Date Published: 5 September 1989
PDF: 15 pages
Proc. SPIE 1116, Helmet-Mounted Displays, (5 September 1989); doi: 10.1117/12.960899
Show Author Affiliations
Nicholas M. Dalton, LTV Missiles and Electronics Group (United States)
Charles S. Deering, LTV Missiles and Electronics Group (United States)


Published in SPIE Proceedings Vol. 1116:
Helmet-Mounted Displays
Jerry Carollo, Editor(s)

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