Coded aperture imaging system
First Claim
1. A method of coded aperture imaging, comprising:
- arranging a single detector to receive radiation from a scene via a single coded aperture mask, the coded aperture mask having a plurality of separate and distinct coded aperture arrays at different locations of the single coded aperture mask;
periodically changing at least one of a location, size and resolution of at least one of the coded aperture arrays;
detecting the radiation from the scene received simultaneously at the detector by the plurality of coded aperture arrays; and
processing a signal representing the radiation received at the detector to decode an image associated with each of the separate and distinct coded aperture arrays.
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Abstract
This invention relates to a coded aperture imaging system wherein a detector array is arranged to receive radiation from a scene via a coded aperture mask. The coded aperture mask provides a plurality of uncorrelated coded aperture arrays at different positions on the mask. Each distinct coded aperture array therefore passes coded information to the detector array. The intensity pattern at the detector array, which is a summation of the intensity patterns from each of the distinct coded aperture arrays, can be decoded separately for each coded aperture array to reconstruct a separate image associated with each coded aperture array. In this way the present invention teaches a coded aperture array means with multiple, simultaneous fields of view. The different fields of view can be different sizes and/or resolutions. Preferably the coded aperture mask is reconfigurable.
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Citations
11 Claims
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1. A method of coded aperture imaging, comprising:
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arranging a single detector to receive radiation from a scene via a single coded aperture mask, the coded aperture mask having a plurality of separate and distinct coded aperture arrays at different locations of the single coded aperture mask; periodically changing at least one of a location, size and resolution of at least one of the coded aperture arrays; detecting the radiation from the scene received simultaneously at the detector by the plurality of coded aperture arrays; and processing a signal representing the radiation received at the detector to decode an image associated with each of the separate and distinct coded aperture arrays. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A coded aperture imager comprising:
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a single detector; and a single coded aperture mask wherein the single coded aperture mask is adapted to provide a plurality of separate and distinct coded aperture arrays at different locations of the single coded aperture mask, and to periodically change at least one of a location, size and resolution of at least one of the coded aperture arrays, and the detector is arranged to receive radiation from a scene via the single coded aperture mask. - View Dependent Claims (9, 10, 11)
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Specification