3-D Model Matching For Missile Guidance

D. L. Milgram; C. M. Bjorklund

doi:10.1117/12.959151

23 December 1980 3-D Model Matching For Missile Guidance

D. L. Milgram, C. M. Bjorklund

Proceedings Volume 0238, Image Processing for Missile Guidance; (1980) https://doi.org/10.1117/12.959151
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

A range sensor computes the distance from the sensor to the nearest scene point along a given ray. A range image is an array of range values for a raster of ray displacements. Range images preserve the 3-D geometry of a scene as viewed from the sensor. Thus actual measurements of scene geometry, e.g. lengths, areas, etc. can be derived from a range image and compared to similar measurements taken from a prepared reference model. The Lockheed Signal Processing Laboratory has developed a method for utilizing range imagery in intelligence, guidance, and recognition tasks, with particular emphasis on missile guidance using onboard reference imagery. In our approach, the reference model is used to predict which planar surfaces will be visible from the estimated sensor position. Descriptions of these surfaces are stored as a reference list. The sensed range image is then acquired and the local 3-D orientation of each pixel is computed. Adjacent pixels appearing to lie in the same surface are aggregated into primitive planes. Descriptions of these planes form a sensed plane list. The sensed plane list is matched to the reference list in 3-D coordinate space. This matching determines the actual sensor position resulting in an accurate vehicle position fix.

Citation Download Citation

D. L. Milgram and C. M. Bjorklund "3-D Model Matching For Missile Guidance", Proc. SPIE 0238, Image Processing for Missile Guidance, (23 December 1980); https://doi.org/10.1117/12.959151

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