Computer Image Generation: Improved Edge Utilization Study.
Final rept. Jan 77-May 78,
GENERAL ELECTRIC CO DAYTONA BEACH FLA
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Computer Image Generation CIG systems for visual scene simulation are now being procured for research and as pilot training simulators. Any given system has limited edge capacity, so it is important that the edges be utilized effectively to provide the simulated visual scene for training. The level-of-detail concept in current CIG systems improves efficiency of edge utilization. A feature at such a distance that it has a small view window image is computed at a low level of detail using few edges. As the viewer approaches the feature, and its image becomes larger, a model containing more detail and more edges is computed to represent it. The high sensitivity of the eye to abrupt changes makes the transition distracting and limits the usefulness of this technique. This study developed techniques to produce a gradual transition from one detail to the other. Evaluation scenes and sequences demonstrated this to be far less obvious and distracting. Another area of investigation provided high detail in the portion of the view window to which the view is directed the area of interest with gradual transition to low detail elsewhere. Author
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