Perspective Display Simulation of Terrain.
Final rept. Apr-Dec 75,
GENERAL ELECTRIC CO DAYTONA BEACH FLA
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The ever-expanding utilization of electro-optical viewing systems EVS requires display simulation which validly depicts the contour or relief characteristics of terrain, rather than merely man-made objects on a flat surface. Such simulation will also be of great value in visual scene simulation. The data preparation techniques and computational algorithms of existing visual scene simulation systems using computer image generation CIG have been developed and optimized for man-made objects - hangars, houses, aircraft, carriers, etc. Earlier EVS simulation effort has used these techniques and algorithms. They are not optimum for terrain display. The effort covered in this report included preparation of simulation data bases from the digitized data prepared by the Defense Mapping AGency. Scenes were generated using several techniques for data compression. The General Electric CIG algorithm was modified to eliminate the constraint that faces be formed into convex objects - a highly artifical constraint for terrain faces. Scenes were generated using both visual and EVS processing. A radar display simulation system was modified to produce perspective displays, and scenes were generated from the DMA derived data bases. A comparative analysis of the radar approach versus the CIG approach was prepared, with a detailed definition of the constraints associated with the radar approach. Some of the simulated scenes were correlated with scenes from a movie made during a flight over the test area. Finally, an analysis concluded that scenes such as those generated can be produced in real-time by currently available CIG hardware. Author
- Electrical and Electronic Equipment
- Active and Passive Radar Detection and Equipment