Single-lens single-image incoherent passive-ranging systems
- 10 October 1994
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 33 (29) , 6762-6773
- https://doi.org/10.1364/ao.33.006762
Abstract
We introduce a new system for single-lens single-image incoherent passive ranging. The only a priori object information this system requires is that the objects to be ranged must possess a low-pass spatial frequency spectrum. Physically, this system for passive ranging is a standard optical imaging system that is customized with a special-purpose optical mask or filter. Analytically, this optical mask customizes the transfer function of the optical system in such a way that objects form images that contain range-dependent information. This range-dependent information lies in the spatial spectrum nulls or zeros of the image.Keywords
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