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The general outdoors passive ranging scenario is one of the most challenging and important areas of research for an optical sensor system moving free in the three dimensional space. We describe here an integrated system of image processing and AI algorithms developed and demonstrated at the Systems and Research Center of Honeywell. This passive ranging system produces a dense range map of an outdoors scene, based only on the sensed imagery and the average speed of the aircraft. No additional knowledge is required about the terrain or the aircraft/sensor attitude changes.